Speakerphone With Build-in Microphone Patents (Class 379/388.02)
  • Patent number: 10499141
    Abstract: A wideband slot-loading loudspeaker includes a speaker driver configured to reproduce sound; an enclosure in which the speaker driver is disposed; a reflective member spaced apart from a front surface of the speaker driver, wherein a slot is formed in a space between the speaker driver and the reflective member; an acoustic discharge port provided at one end of the slot, the acoustic discharge port configured to discharge the sound reproduced by the speaker driver; at least one opening provided in the reflective member; and a sound resistance member disposed at the at least one opening.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: December 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-bae Kim, Sung-ha Son, Gyeong-tae Lee, Sung-joo Kim, Young-sang Lee
  • Patent number: 10469940
    Abstract: A portable electronic device including an enclosure having an enclosure wall that forms an interior chamber. A speaker module is positioned within the interior chamber and includes a speaker and a module wall forming a back volume chamber of the speaker. The back volume chamber includes an acoustic vent port formed through the module wall to acoustically couple the back volume chamber to the interior chamber. The device further including an electromechanical valve for regulating the acoustic coupling of the back volume chamber to the interior chamber. The electromechanical valve is operable to transition between an open configuration in which the acoustic vent port is open to the interior chamber and a closed configuration in which the acoustic vent port is closed off from the interior chamber.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: November 5, 2019
    Assignee: Apple Inc.
    Inventors: Martin D. Taylor, Hongdan Tao, Claudio Notarangelo, Suzanne C. Brown, Benjamin J. Pope, Scott P. Porter, Tang Y. Tan, Christopher Wilk
  • Patent number: 10447830
    Abstract: A user terminal apparatus is provided. The user terminal apparatus includes: a flexible display including: a main area; and a sub area comprising a curved portion and extending from the main area to a side portion of the user terminal apparatus; a housing configured to enclose the flexible display; a sound output hole provided between the flexible display and the housing and configured to output a sound from a call function; and a sound input hole configured to receive an input sound.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: October 15, 2019
    Inventors: Jae-young Huh, Yu-dong Bae, Shi-yun Cho
  • Patent number: 10365685
    Abstract: A display apparatus includes a display panel configured to display an image by emitting light, a supporting member on a rear surface of the display panel, and a sound generator between the display panel and the supporting member. The sound generator includes a magnetic circuit unit and a voice coil unit on the rear surface of the display panel, and the magnetic circuit unit and the voice coil unit are configured to vibrate the display panel to generate sound.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: July 30, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Sungtae Lee, YeongRak Choi, Sungsu Ham
  • Patent number: 10334353
    Abstract: A loudspeaker module comprises a housing and a loudspeaker unit. The housing is provided with an inner cavity for receiving and fixing the loudspeaker unit. A vibrating diaphragm of the loudspeaker unit partitions the inner cavity into a front sound cavity and a rear sound cavity. The front sound cavity is in communication with at least two sound uttering holes, and the at least two sound uttering holes are distributed on different sides of the housing. The electronic product comprises the loudspeaker module. By means of the technical solution of the present disclosure, the sound uttering holes are provided individually on different sides of a housing of a loudspeaker module.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: June 25, 2019
    Assignee: Goertek Inc.
    Inventors: Minghui Shao, Jianbin Yang
  • Patent number: 10296057
    Abstract: An electronic device includes a first housing component including a first surface and a second surface and including a first through hole which connects the first surface and the second surface to each other, a second housing component removably attached to the first housing component, and an acoustic component located on a first side of the first through hole. The first housing component and the second housing component as being combined with each other define a passage which communicates with the outside. The first housing component includes a third surface. The second housing component includes a fourth surface. On one of the third surface and the fourth surface, a rib which protrudes to abut on the other is located. The rib is located to separate a region including the first through hole from other portions.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 21, 2019
    Assignee: KYOCERA Corporation
    Inventors: Satoru Suezawa, Akito Iwai
  • Patent number: 10283114
    Abstract: Example implementations disclosed herein can be used to generate a local sound signal corresponding to utterances of a user and other sounds detected by a microphone array coupled to a communication device and to condition the local sound signals to separate the utterances of the user from the other sounds to generate a conditioned sound signal. The conditioned sound signals are evaluated to generate a local quality score for the conditioned sound signals, and when the local quality score of the conditioned sound signals is below a threshold associated with the communication device, a local feedback message indicating a local user position change can be generated. The local feedback message can include instructions for the user to move to another location to improve the quality of the condition sound signals.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 7, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Robert C Brooks, Kent E Biggs, Chi So
  • Patent number: 10186279
    Abstract: In some examples, devices for detecting and measures a ghost echo current in an audio signal are described. For instance, the device may be configured to sample a current of an audio signal, compare with an expected current, and determine an impulse response of the ghost echo current based on the sampled current and the expected current. The device may also be configured to reduce the ghost echo current using the impulse response.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: January 22, 2019
    Assignee: RevX Technologies
    Inventor: Dennis Rauschmayer
  • Patent number: 10182093
    Abstract: Providing real-time interaction between a first player and a second player to collaborate for a musical performance over a network, includes maintaining a reference data item generated using a musical instrument performed by a user; receiving first user input data generated using a first musical instrument, the received first user input data associated with the first musical instrument and the musical performance; receiving second user input data generated using a second musical instrument, the received second user input data associated with the second musical instrument and the musical performance; detecting a missing data packet within the received second user input data when generating real-time collaboration data for the musical performance; replacing the missing data packet using the reference data item to correct the second user input data; and generating real-time collaboration data for the musical performance based on the corrected second user input data.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: January 15, 2019
    Assignee: YOUSICIAN OY
    Inventor: Anssi Klapuri
  • Patent number: 10154327
    Abstract: An electronic device has a speaker housing secured within the device housing. The speaker housing has a cavity with a speaker at one end and a port at the other configured to communicate through an aperture in the housing of the electronic device. A panel of acoustic mesh is integrally formed within the cavity of the housing and is disposed between the port and the speaker. In other embodiments flexible structures are integrally molded onto a plate or the acoustic device and used to secure and acoustically seal the acoustic device within the device housing.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: December 11, 2018
    Assignee: Apple Inc.
    Inventors: Martin J. Auclair, Jared M. Kole, Marwan Rammah, David A. Pakula, Scott P. Porter
  • Patent number: 10122863
    Abstract: A full duplex voice communication method constituted of: estimating an acoustic echo within a near-end signal; cancelling the estimated acoustic echo; detecting whether, or not, a change has occurred in a near-end acoustic echo path, the received near-end signal represents speech and the received far-end signal represents silence, wherein, responsive to the results thereof, the method is further constituted of: alternately attenuating frequency components of the echo cancelled near-end signal by a first frequency domain attenuation value and by a second greater frequency domain attenuation value; alternately attenuating a first function of the frequency component attenuated echo cancelled near-end signal by a first switchable attenuation value and by a second greater switchable attenuation value; and alternately attenuating a second function of the received far-end signal by a third switchable attenuation value and by a fourth greater switchable attenuation value.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: November 6, 2018
    Inventors: Tanmay Zargar, Dillon Reed Ritter, Rodolfo Silva, Eric Bass, Francis Chukwuemeka Onochie
  • Patent number: 9978391
    Abstract: According to an embodiment, a power spectrum iteration factor is determined according to a noisy speech and a background noise, and a moving average power spectrum of the speech is obtained according to the power spectrum iteration factor. A server is able to trace the noisy speech according to the power spectrum iteration factor.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: May 22, 2018
    Inventors: Guoming Chen, Yuanjiang Peng, Xianzhi Mo
  • Patent number: 9838778
    Abstract: An electronic device has a speaker. The speaker has a main body and a cover. The main body has a speaker body and a tube. The tube is situated at a side of the speaker body. The cover is situated above the main body for covering the tube and part of the speaker body, such that the speaker has a covered portion and an uncovered portion. The cover has a hole. The sound produced by the covered portion is output via the tube along a first direction. The sound produced by the uncovered portion is output via the hole along a second direction.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: December 5, 2017
    Assignee: Acer Inc.
    Inventors: Feng-Ming Liu, Jia-Ren Chang
  • Patent number: 9818424
    Abstract: A method, and one or more non-transitory computer-readable media storing instructions, and a device for removal of unwanted components in an audio signal, the device comprising a processor, coupled to memory, configured to receive reference and processed inputs into memory where the processed input is a result of a reduction process of unwanted components of the audio signal, estimate envelope values for processed and reference inputs at a plurality of time and frequency instances, for each time and frequency instance: compute a first gain in relation to a ratio of the estimated envelope value of the processed input to the estimated envelope value of the reference input, apply a nonlinear process to said first gain to produce a second gain, compute an output gain as the ratio between second gain and first gain and, apply the output gain to processed input, thereby producing a filtered output with unwanted components suppressed.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: November 14, 2017
    Assignee: WAVES AUDIO LTD.
    Inventors: Itai Neoran, Shmuel Nedjar, Roy Yam
  • Patent number: 9748915
    Abstract: An electronic device may include a speaker, and audio circuitry coupled to the speaker. The audio circuitry may generate digitized samples of an audio waveform signal, and compare each digitized sample of the audio waveform signal to a threshold. The audio circuitry may when a given digitized sample is above the threshold, then apply a compression operation to the given digitized sample and successive digitized samples for a set time period, and when the given digitized sample is below the threshold and not within the set time period, then not apply the compression operation.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: August 29, 2017
    Inventor: James A. Norris
  • Patent number: 9654609
    Abstract: An accessory device having multiple speakers and/or microphones to perform a number of audio functions, for use with mobile devices, are provided. The audio transducers (e.g., microphones and/or speakers) may be housed in one or more extendable and/or rotationally adjustable arms. To compensate for the unwanted signal feedback between the speakers and microphones, acoustic echo cancellation may be implemented to determine the proper distance and relative location between the speakers and microphones. Acoustic echo cancellation removes the echo from voice communications to improve the quality of the sound. The removal of the unwanted signals captured by the microphones may be accomplished by characterizing the audio signal paths from the speakers to the microphones (speaker-to-microphone path distance profile), including the distance and relative location between the speakers and microphones.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: May 16, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Erik Visser, Michael Joseph Contour, Eric S. Mattis, Joseph Robert Fitzgerald, Kwokleung Chan
  • Patent number: 9558730
    Abstract: An audio processing system includes an audio receiving module, a sound source separation module and a noise suppression module. The audio receiving module receives at least two audio signals. The sound source separation module receives a plurality of space features of the audio signals and obtains a main sound source signal separated from the audio signals based on the space features. The noise suppression module processes the main sound source signal based on an averaged amplitude value of noise in the main sound source signal so as to suppress noise in the main sound source signal. Each audio signal of the at least two audio signals includes signals from a plurality of sound sources.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: January 31, 2017
    Inventors: Tsung-Han Tsai, Pei-Yun Liu, Yu-He Chiou
  • Patent number: 9549079
    Abstract: Acoustic echo cancellation is improved by receiving a speaker signal that is used to produce audio in a room, and receiving audio signals that capture audio from an array of microphones in the room, including an acoustic echo from the speakers. To cancel the acoustic echo, one adaptive filter is associated with a corresponding subspace in the room. Each of the audio signals is assigned to at least one of the adaptive filters, and a set of coefficients is iteratively determined for each of the adaptive filters. The coefficients for an adaptive filter are determined by selecting each of the audio signals assigned to that adaptive filter and adapting the filter to remove an acoustic echo from each of the selected audio signals. At each iteration, a different audio signal is selected from the audio signals assigned to the adaptive filter in order to determine the set of coefficients.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: January 17, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Feng Bao, Subrahmanyam Venkata Kunapuli, Fei Yang, Xiangyu Bao, Tor A. Sundsbarm
  • Patent number: 9438308
    Abstract: An apparatus having a first circuit and a second circuit is disclosed. The first circuit is configured to generate a first intermediate signal by expanding a first input signal subjected to a quantization. The second circuit is configured to generate a second intermediate signal based on a second input signal. The second intermediate signal approximates an echo in the first input signal caused by the second input signal. The second circuit is also configured to generate a third intermediate signal by companding the second intermediate signal to compensate the quantization of the first input signal.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: September 6, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventor: David G. Shaw
  • Patent number: 9432762
    Abstract: A system and method to perform signal processing using a loudspeaker output are described. The system includes an enclosure configured to define a back cavity of the loudspeaker and components to obtain a representation of the loudspeaker acoustic output at the back cavity. The system also includes a processor to process the representation to perform the signal processing.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: August 30, 2016
    Assignee: BlackBerry Limited
    Inventors: Andre John Van Schyndel, Chris Forrester, Sylvain Angrignon
  • Patent number: 9426279
    Abstract: Traditionally, echo cancellation has employed linear adaptive filters to cancel echoes in a two way communication system. The rate of adaptation is often dynamic and varies over time. Disclosed are novel rates of adaptation that perform well in the presence of background noise, during double talk and with echo path changes. Additionally, the echo or residual echo can further be suppressed with non-linear processing performed using joint frequency-time domain processing.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: August 23, 2016
    Inventors: Youhong Lu, Trausti Thormundsson, Yair Kerner, Ragnar H. Jonsson
  • Patent number: 9414140
    Abstract: An electronic device includes a case, a speaker, a supporting stand, and a waterproof breathable membrane. The case includes a first inner space and a through hole connected to the first inner space. The speaker is disposed in the first inner space, and produces sound waves outwards from the through hole. The supporting stand connects the case to cover the through hole. The supporting stand includes a sound hole and a second inner space connected to the sound hole and the through hole. The waterproof breathable membrane covers one of the sound hole and the through hole.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: August 9, 2016
    Inventors: Shing-Da Wang, Chih-Wen Chiang, Chang-Yuan Wu, Yi-Chang Wu, Hsin-Chih Hsiao, Yen-Ling Liu, Chien-Chu Chen
  • Patent number: 9357292
    Abstract: An electronic device is provided. The electronic device includes a case, an acoustic boot, a first microphone and a second microphone. The case includes a first acoustic opening, a second acoustic opening. The acoustic boot comprises a first duct and a second duct, the first duct is connected to the first acoustic opening, and the second duct is connected to the second acoustic opening. The first microphone is connected to the first duct. The second microphone is connected to the second duct.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 31, 2016
    Assignee: FORTEMEDIA, INC.
    Inventors: Yen-Son Paul Huang, Iou-Din Jean Chen, James Juei Son Lin
  • Patent number: 9343078
    Abstract: An acoustic processing apparatus is provided. The apparatus includes a pre-processing component, a filter and a first signal processing component. The pre-processing component compensates a non-linearity of a reference signal to generate an input signal. The filter coupled to the pre-processing component, the filter executes filtering on the input signal to generate an output signal. The first signal processing component, coupled to the pre-processing component, the reference signal obtains a gain from the first signal processing component to generate a first signal, and the first signal processing component passes the gain to the pre-processing component.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: May 17, 2016
    Assignee: Intel Corporation
    Inventors: Meoung-Jin Lim, Sanghyun Chi
  • Patent number: 9286883
    Abstract: Features are disclosed for performing acoustic echo cancellation using random noise. The output may be used to perform speech recognition. Random noise may be introduced into a reference signal path and into a microphone signal path. The random noise introduced into the microphone signal path may be transformed based on an estimated echo path and then combined with microphone output. The random noise introduced into the reference signal path may be combined with a reference signal and then transformed. In some embodiments, the random noise in the reference signal path may be used in the absence of another reference signal, allowing the acoustic echo canceler to be continuously trained.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: March 15, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Robert Ayrapetian, Bjorn Hoffmeister
  • Patent number: 9277327
    Abstract: An acoustic generator includes a vibrating body. The acoustic generator includes a frame member attached by a bonding material to an external peripheral portion of the vibrating body. The acoustic generator has an exciter provided on the vibrating body inside of the frame member. In this case, the acoustic generator further includes an extended portion of the bonding material provided to be extended on the vibrating body inside of the frame from the frame member.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: March 1, 2016
    Inventors: Masaki Terazono, Shigenobu Nakamura
  • Patent number: 8923530
    Abstract: A method is disclosed for acoustic feedback attenuation at a telecommunications terminal. A speakerphone equipped with a loudspeaker and two microphones is featured. Signals from the two microphones are subjected to a calibration stage and then to a runtime stage. The purpose of the calibration stage is to match the microphones to each other by advantageously using both magnitude and phase equalization across the frequency spectrum of the microphones. During the runtime stage, the microphones monitor the ambient sounds received from sound sources, such as the speakerphone's users and the loudspeaker itself, during a conference call. The speakerphone applies the generated set of filter coefficients to the optimized microphone's signals. By combining the signal from the reference microphone with the filtered signal from the optimized microphone, the speakerphone is able to attenuate the sounds from the loudspeaker that would otherwise be transmitted back to other conference call participants.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: December 30, 2014
    Assignee: Avaya Inc.
    Inventors: Eric John Diethorn, Heinz Teutsch
  • Patent number: 8923508
    Abstract: A speakerphone having transmit path with a microphone and a first amplifier having a gain determined by a controller and an input coupled to the microphone, a receive path with a second amplifier having a gain determined by the controller and a speaker coupled to an output of the second amplifier, and operable in a half-duplex mode using an adaptive echo canceller to at least partially remove from the transmit path acoustically-coupled signals from the receive path. The controller increases the gain of the first amplifier and decreases the gain of the second amplifier when a level of signals in the transmit path exceed a level of signals in the receive path, and decreases the gain of the first amplifier and increases the gain of the second amplifier when the level of signals in the receive path exceed the level of signals in the transmit path.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: December 30, 2014
    Assignee: LSI Corporation
    Inventors: Donald R. Laturell, Kannan Srinivasan, Chao-pin Chen
  • Patent number: 8868100
    Abstract: A system for preventing noise transmission at the end of a telephone call includes a telephone having a handset and a base unit. The telephone has a proximity sensor configured to detect when the handset is in close proximity to the base unit prior to the handset contacting the base unit. A control element communicates with the proximity sensor and prevents transmission of sound received from the handset when the proximity sensor indicates that the handset is in close proximity to the base unit thereby preventing transmission of noise caused by the handset contacting the base unit.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: October 21, 2014
    Assignee: ADTRAN, Inc.
    Inventor: Patrick Andrew Price
  • Patent number: 8775163
    Abstract: A facility for conducting a real-time conversation in which the selected one of a number of participants utilizes a silent mode is described. Remark spoken by participants other than the selected one are transformed into text and displayed for the selected participant. Remarks entered textually by the selected participant are transformed into speech and played audibly for participants other than the selected one.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 8, 2014
    Inventors: Tony Bristol, Marvin Ingelman
  • Patent number: 8699675
    Abstract: The present invention provides a method for exchanging information in a voice communication system, which includes a first communication device establishing a communication connection with a second communication device, and the first communication device exchanging digital data with the second communication device for achieving a specific function in a specific interval; wherein the specific interval is an interval that the first communication device does not exchange voice signals with the second communication device.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: April 15, 2014
    Assignee: Wistron Corporation
    Inventors: Shao-Fong Chen, Sheng-Ta Hsieh
  • Patent number: 8565414
    Abstract: A telephone includes a transmit channel and a receive channel, each including a bank of sub-band filters having a VAD coupled one to each sub-band filter. Each VAD measures the spectral energy in a sub-band, compares the spectral energy to a first threshold, and produces an output signal representative of whether or not the first threshold is exceeded. The voice activity detector also includes a threshold circuit for calculating a dynamically adjustable noise threshold based upon averaged measured spectral energy. A wide band or system VAD monitors echo canceling circuitry to detect voice activity and double talk.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: October 22, 2013
    Assignee: Acoustic Technologies, Inc.
    Inventors: Justin L. Allen, Franklyn H. Story, Seth Suppappola
  • Patent number: 8483409
    Abstract: Systems and methods for managing the volume of multiple VoIP streams are disclosed. The system includes a VoIP server configured to receive an input audio stream from a first VoIP handset, create separate output audio streams from the input audio stream for transmission to second and third VoIP handsets, and to connect to a communications network. The system also includes a volume control table coupled to the VoIP server, the volume control table including records of volume adjustments made during prior conversations between the two or more VoIP handsets. The VoIP server is further configured create the separate output audio streams such that one or more of the output streams has a volume that is different than input audio stream based on the records.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: July 9, 2013
    Assignee: International Business Machines Corporation
    Inventor: Nicholas F. Campion
  • Patent number: 8467524
    Abstract: Embodiments of the present invention provide systems, methods, and computer-readable media for presenting a mute indicator to a caller when the caller is attempting to provide input to a call that has been muted. In particular, a determination is made that a mute function is engaged during a call. An area surrounding a calling system, such as a phone, is then monitored by a monitoring system to determine whether a caller is attempting to provide input to the call. A determination is then made that a caller is attempting to provide input to the call. The determination may be based on a caller providing a threshold volume of voice input within a threshold area of proximity near the calling system. A mute indicator is then presented to the caller to notify the caller that the call has a mute function engaged.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: June 18, 2013
    Assignee: Sprint Communications Company L.P.
    Inventors: Woojae Lee, Trevor Daniel Shipley
  • Patent number: 8442478
    Abstract: A method and apparatus is disclosed that controls voice call quality by networks and maintains the optimal voice call quality in a portable terminal. The voice call quality control method includes: identifying a network, connected to the portable terminal when the portable terminal enters a voice call mode, and a value for applying voice call quality of the network; changing a value for setting voice call quality, performed in the network, by the value for applying voice call quality; and controlling voice call quality of a voice call mode in the network by the altered value for setting voice call quality.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: May 14, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong Kyu Ji
  • Patent number: 8433057
    Abstract: A voice band extender includes a component separator for receiving a band-limited speech signal over a telecommunications line to separate the speech signal into a noise-suppressed signal and an extracted-noise signal, a noise-suppressed signal component extender for adding a signal having its frequency band higher than that of the noise-suppressed signal to thereby produce an extended noise-suppressed signal, an extracted-noise signal component extender for producing an extended extracted-noise signal, a signal intensity adjuster for adjusting signal intensity of either or both of the extended noise-suppressed signal and the extended extracted-noise signal, and a synthesizer for combining the extended noise-suppressed signal and the extended extracted-noise signal obtained by the intensity adjustment. The respective frequency bands of the extracted-noise signal and the noise-suppressed signal are thus extended.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: April 30, 2013
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Atsushi Tashiro
  • Patent number: 8335309
    Abstract: The invention relates to a method for detecting the status of a telephone receiver (H) for a communication terminal (EG), wherein the telephone receiver (H) is equipped with a microphone (M) and with a loudspeaker (LS). The loudspeaker (LS) of the telephone receiver (H) is used to output a defined tone signal, and this tone signal is simultaneously picked up again by means of the microphone (M) of the telephone receiver (H). The tone signal picked up is analysed, with at least one value for at least one parameter of the tone signal picked up being ascertained, and the at least one value is used to determine the status of the telephone receiver (H).
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: December 18, 2012
    Assignee: Siemens Enterprise Communications GmbH & Co. KG
    Inventors: Oliver Brasse, Ulrich Hardebusch
  • Patent number: 8335324
    Abstract: The invention provides an apparatus capable of automatic volume adjustment. In one embodiment, the apparatus comprises a speaker, an array microphone located in the vicinity of the speaker, a beamforming module, a signal-to-noise ratio calculation module, and a volume adjustment module. The speaker first broadcasts a first audio signal. The array microphone converts a sound into a plurality of second audio signals. The beamforming module derives a speaker sound signal and an ambient noise signal from the second audio signals, wherein the speaker sound signal mainly comprises speaker sound components generated by the speaker and the ambient noise signal mainly comprises noises other than the speaker sound components. The signal-to-noise ratio calculation module calculates a ratio of a first power of the speaker sound signal to a second power of the ambient noise signal to obtain a signal-to-noise ratio.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: December 18, 2012
    Assignee: Fortemedia, Inc.
    Inventors: Ming Zhang, Chi-Chian Yu
  • Patent number: 8144897
    Abstract: A degree of seal of an ear about a speaker port may be estimated by detecting touch contact between the ear and at least one touch sensor in fixed relation to the speaker port. The degree of seal is estimated based on the detected touch contact. Based upon the estimated degree of seal, the acoustic output of the speaker may be adjusted. The adjustment may compensate for perceived changes to the quality of the acoustic output resulting from the degree of seal. The at least one touch sensor may be a plurality of touch sensors spaced around the speaker port. Each sensor may have a truncated wedge shape, with a narrow end closest to the speaker port. Upon receipt of user input indicative of a high degree of ear seal, a sample of the sensor(s) may be taken and stored for using during future estimation of the degree of seal.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: March 27, 2012
    Assignee: Research In Motion Limited
    Inventor: Craig Eric Ranta
  • Patent number: 8116500
    Abstract: In various embodiments, a speakerphone may comprise multiple (e.g., 16) microphones placed in a circular array around a central speaker. The microphones may be mounted vertically in the speakerphone with their respective diaphragms substantially parallel to the top surface of the speakerphone. The centrally mounted speaker may be coupled to a stiff internal speaker enclosure. The speaker enclosure may be made of a stiff, heavy material (e.g., a dense plastic) to prevent the speaker vibrations from excessively vibrating the speakerphone enclosure (which may affect the microphones). The speaker enclosure may also include a raised rim and ridges to increase its stiffness.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: February 14, 2012
    Assignee: LifeSize Communications, Inc.
    Inventors: William V. Oxford, Kevin Patrick Kellar
  • Patent number: 8112273
    Abstract: The present invention is a system and method that improves upon voice activity detection by packetizing actual noise signals, typically background noise. In accordance with the present invention an access network receives an input voice signal (including noise) and converts the input voice signal into a packetized voice signal. The packetized voice signal is transmitted via a network to an egress network. The egress network receives the packetized voice signal, converts the packetized voice signal into an output voice signal, and outputs the output voice signal. The egress network also extracts and stores noise packets from the received packetized voice signal and converts the packetized noise signal into an output noise signal. When the access network ceases to receive the input voice signal while the call is still ongoing, the access network instructs the egress network to continually output the output noise signal.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: February 7, 2012
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: James H. James, Joshua Hal Rosenbluth
  • Patent number: 8059806
    Abstract: A method and system for managing a communication session is provided. The communication session is associated with multiple communication devices. The method includes learning (304) a set of derived acoustic features of an audio communication signal that is associated substantially only with one user of a communication device. The method also includes receiving (306) a communication session signal. The communication session signal is an audio signal that includes a combination of audio communication signals. Each audio communication signal of the audio communication signals is associated with a user of a communication device of the multiple communication devices. The method includes modifying (308) the communication session signal based on the set of derived acoustic features.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: November 15, 2011
    Assignee: Motorola Mobility, Inc.
    Inventors: James Kefeng Zhou, Leonard C. Hause
  • Patent number: 8045701
    Abstract: In a speakerphone device identification of signals (i.e., voice input or speaker output) in a process for reducing acoustic feedback, in a communication device, is accomplished by adding a signature noise (i.e., an identification mark) to output signals radiated by the speaker to enable these signals to be separated from speech input to the microphone. Having identified the signal (i.e., speech output) likely to cause a “singing” phenomenon, appropriate insertion loss to reduce the feedback may be added to the appropriate speech path within the communication device, to reduce a probability of singing.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: October 25, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Richard Henry Erving, Robert Raymond Miller, II
  • Patent number: 8036375
    Abstract: In one embodiment, a method for providing voice quality assurance is provided. The method determines voice information for an end point in a voice communication system. The voice information may be from an ingress microphone. The method determines if the voice quality is considered degraded based on an analysis of the voice information. For example, the voice information may indicate that it is distorted, too loud, too soft, is subject to an external noise, etc. Feedback information is determined if the voice quality is considered degraded where the feedback information designed to improve voice quality at an ingress point for a user speaking. The feedback information is then outputted at the end point to the user using the end point.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: October 11, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Shmuel Shaffer, James C. Frauenthal, Michael P. O'Brien
  • Patent number: 8000466
    Abstract: A telecommunications system includes a network; a plurality of user devices operably coupled to said network and including a microphone and a speaker; a collaboration server configured to cause a playing of one or more test tones at said plurality of user devices and compensate for feedback if said test tones are detected by microphones associated with said plurality of user devices.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: August 16, 2011
    Assignee: Siemens Enterprise Communications, Inc.
    Inventors: Rami Caspi, William J. Beyda
  • Publication number: 20110150209
    Abstract: Audio processing systems, such as full duplex digital telephone systems, are provided in which analog automatic level control (ALC) circuitry is employed to automatically control and stabilize the microphone output audio signal levels to a constant level for optimal digital signal processing. For example, an audio communication device (10) includes a microphone (11) to generate an audio signal, an analog automatic level control (ALC) circuit (13), coupled to an output of the microphone (11), to control a level of the audio signal output from the microphone (11) and output a level-controlled audio signal, and a DSP (digital signal processing) circuit (14) to process the level-controlled audio signal output from the ALC circuit (13). The ALC (13) allows audio signals to be captured by the microphone (11) with wide dynamic range, while stabilizing the microphone output level within a reduced dynamic range compatible with the limited dynamic range of the DSP circuitry (14) for enhanced performance.
    Type: Application
    Filed: June 24, 2008
    Publication date: June 23, 2011
    Inventors: Wilhelm Ernst Riedl, Joel David Sawaski, Kent Joseph Nysewander, Hung Chi Lai, Frank Alan Nardelli
  • Patent number: 7961870
    Abstract: An automatic handset lifter is used with a wireless communication system. The system attaches to a conventional telephone and creates a communication link between the telephone and a portable device such as a wireless headset. The system automatically detects the ringing of the telephone by sensing magnetic fields of the telephone speaker. Upon ring detection, the system creates a communications link with the remote device and deploys a mechanical lifting device to lift the handset. Lifting the handset activates the telephone cradle switch to answer the phone and thereby allows the remote device to communicate over the telephone.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: June 14, 2011
    Assignee: GN Netcom A/S
    Inventors: Robert E. Lucey, Joseph L. Freni, Jr., Stephen R. Lyman
  • Patent number: 7920696
    Abstract: A method (200), and electronic communication device (100), for automatically selectively changing from one mode of operation to a speakerphone mode of operation after a call on the electronic communication device (100) is established. The method (200), and electronic communication device (100), perform establishing a call (210) using a first mode of operation that is a mode of operation other than the speakerphone mode of operation. Then there is performed changing automatically (235) from the first mode of operation to the speakerphone mode of operation when a signal amplitude provided by a microphone used in the first mode of operation does not reach a threshold level before an expiration of a predetermined time period.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 5, 2011
    Assignee: Motorola Mobility, Inc.
    Inventor: Kee (Basil) Joo Chew
  • Patent number: 7804963
    Abstract: A method of comparison between pieces of information characterizing reference values and pieces of information characterizing current values of sound-reproducing systems of a system of (n) microphones mi and (p) speakers hpj for the control of said sound-reproducing systems characterized in that: A: for each speaker hpj, at least one sound signal S is sent on the speaker hpj, for each microphone mi, a piece of information hpjmi is retrieved, this piece of information characterizing the sound-reproducing system comprising the speaker hpj and the microphone mi, B: a reference matrix Qr is saved, this reference matrix being constituted by all the pieces of reference information hpjmi obtained following the sending of the sound signal S, C: as soon as a comparison is to be made, the step A is run with a sound signal S? to obtain current information on a matrix Q, D: the matrices Q and Qr are compared.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: September 28, 2010
    Assignee: France Telecom SA
    Inventors: Jean-Philippe Thomas, Marc Emerit
  • Patent number: 7756265
    Abstract: In an on-board hands-free communication apparatus, a gain of an amplifier of a speaker for outputting an incoming voice signal from a telephone device varies with a volume set value of a speaker volume switch adjusted by an user. When the gain of the amplifier increases equal to or greater than a threshold value, a feature extraction amplification circuit performs a feature extraction amplification processing to apparently amplify output power of the incoming voice signal, and a control circuit fixes the gain of the amplifier to the threshold value regardless of the volume set value.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: July 13, 2010
    Assignee: DENSO Corporation
    Inventor: Toshihiro Hosoi