With Amplitude Control Patents (Class 381/102)
  • Patent number: 10411667
    Abstract: A sound signal processing apparatus includes: first amplifier which amplifies a sound signal, depending on an input level of the sound signal; and second amplifier which amplifies with a gain the sound signal amplified by first amplifier. Second amplifier automatically decreases the gain when a level of the sound signal is greater than an upper limit threshold, and second amplifier automatically increases the gain when the level of the sound signal is lower than the upper limit threshold and when the gain is lower than a predetermined value. When second amplifier increases the gain, second amplifier changes the gain at a first speed when a user has performed an operation to decrease the input level, and second amplifier changes the gain at a second speed lower than the first speed when the user has not performed the operation to decrease the input level.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: September 10, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Yoshio Ohtsuka
  • Patent number: 10375493
    Abstract: An audio system receives an input signal and, if the input signal has a sparse representation in the frequency domain, comprising components at at least one frequency of interest, the input signal is filtered in at least one band pass filter, such that only components at the or each frequency of interest are passed to an output. The operation is able in some case to analyze the input signal to determine whether the input signal has a sparse representation in the frequency domain.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: August 6, 2019
    Assignee: Cirrus Logic, Inc.
    Inventors: John Paul Lesso, Yanto Suryono
  • Patent number: 10333482
    Abstract: A speaker system featuring automatic volume adjustment to avoid excess distortion includes a first converter for converting an input signal to an input frequency domain signal; and a second converter for converting a microphone signal to an environmental frequency domain signal. A distortion analyzer receives output of the first and second converter and determines at least one distortion level and provides at least one gain adjustment signal used to control a corrector to adjust gain of a speaker driver. The system performs a method of reducing distortion by automatically adjusting volume in each of a plurality of frequency bands including converting an input signal to a frequency domain input signal; converting a microphone signal to an environmental frequency domain signal; determining a distortion level; generating a gain adjustment signal; and adjusting gain of a signal provided to a speaker driver.
    Type: Grant
    Filed: February 4, 2018
    Date of Patent: June 25, 2019
    Assignee: OmniVision Technologies, Inc.
    Inventors: Dong Shi, Chung-An Wang, Cheng-Lun Hu
  • Patent number: 10154353
    Abstract: Signal processing methods for predicting the intelligibility of speech, e.g., in the form of an index that correlate highly with the fraction of words that an average listener (amongst a group of listeners with similar hearing profiles) would be able to understand from some speech material are proposed. Specifically, solutions to the problem of predicting the intelligibility of speech signals, which are distorted, e.g., by noise or reverberation, and which might have been passed through some signal processing device, e.g., a hearing aid are described. In summary, the disclosure present solutions to the following problems: 1. Monaural, non-intrusive intelligibility prediction of noisy/processed speech signals 2. Binaural, non-intrusive intelligibility prediction of noisy/processed speech signals 3. Monaural and binaural intelligibility enhancement of noisy speech signals.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: December 11, 2018
    Assignee: Oticon A/S
    Inventors: Jesper Jensen, Asger Heidemann Andersen, Jan Mark De Haan
  • Patent number: 10141898
    Abstract: A digital-to-analog converter (DAC) circuit includes a pair of output stages, each including a DAC configured to convert a digital audio signal into an analog audio signal. A low-pass filter circuit includes an operational amplifier in signal communication with the DAC. The operation amplifier generates a filtered analog signal based on the analog audio signal. An amplifier network generates an amplified audio signal based on the filtered analog signal. The operational amplifier includes a feedback circuit path including a first node connected to the output of the amplifier network and a second node connected to the input of the operational amplifier. The amplifier network is electrically nested in the feedback circuit path.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: November 27, 2018
    Assignee: TYMPHANY HK LIMITED
    Inventor: Sebastiaan de Vries
  • Patent number: 10103702
    Abstract: A volume controller may maintain a volume mapping including a plurality of zones of volume level, each zone defined according to a range of included volume levels and specifying a volume ramp up control rate and a volume ramp down control rate for adjustment of volume levels within the range, determine, according to the volume mapping based on a current volume level and a direction of a requested volume change, a step value for adjusting the current volume level, and adjust the current volume level according to the step value.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: October 16, 2018
    Assignee: Harman International Industries, Incorporated
    Inventors: Satish K. Putta, Shaomin Sharon Peng
  • Patent number: 10034090
    Abstract: A first fixed filter extracts high-frequency and low-frequency sound signals outside the audible band, and a level integrator integrates levels of the sound signals to obtain a first integrated value. With a second fixed filter, the level integrator integrates levels of sound signals in a low frequency band within the audible band to obtain a second integrated value. A control unit determines whether the high-frequency sound signals are dominant by comparing the first integrated value with the second integrated value. When the high-frequency sound signals are dominant, the control unit attenuates high-frequency speaker drive signals using a variable filter.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: July 24, 2018
    Assignee: Alpine Electronics, Inc.
    Inventors: Yoshikazu Maeda, Minoru Matsuyama, Masashi Saito
  • Patent number: 9872121
    Abstract: A down-mixing method of 5.1 audio input channels for two channel replay by DRC processing of the LFE and the LS and RS channel signal before mixing, and by filtering LS and RS channels with BRTFs measured from placing a loud speaker at a corner of a room and measuring head at the diagonal corner of the room.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: January 16, 2018
    Assignee: WATA Electronics Co., LTD
    Inventors: Ren Xu, Litang Gu
  • Patent number: 9866191
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: January 9, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9787269
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: October 10, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9787268
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: October 10, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9780751
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: October 3, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9774309
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: September 26, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9768749
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: September 19, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9768750
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: September 19, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9762196
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: September 12, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9742372
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 22, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9712348
    Abstract: A device includes circuitry configured to determine noise shaping parameters for one or more transmit signals on one or more transmit channels based on transmission protocol and spectral mask criteria. Frequency positions are identified for the one or more transmit channels based on the noise shaping parameters, and the noise shaping parameters are applied to the one or more transmit signals.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: July 18, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: David C. Garrett, Franciscus Van Der Goes, Hooman Darabi, Ramon A. Gomez, Murat Mese
  • Patent number: 9698744
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 4, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 9678487
    Abstract: A method of allocating a fixed resource includes displaying an interface control in a user interface display. The interface control includes at least three continuous value control elements associated with a group including at least three categories. Each continuous value control element is associated with a value associated with a category of the group. The operator of the values associated with the at least three continuous value control elements is equal to a fixed quantity. In response to a first user input, a first continuous value control element is locked to fix the value associated with the first continuous value control element. In response to a second user input, a second continuous value control element is adjusted to change the value associated with the second continuous value control element.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: June 13, 2017
    Assignee: DATAINFOCOM USA, INC.
    Inventors: Atanu Basu, Frederick Johannes Venter
  • Patent number: 9646615
    Abstract: A method of encoding a time-domain audio signal is presented. A device transforms the time-domain signal into a frequency-domain signal including a sequence of sample blocks, wherein each block includes a coefficient for each of multiple frequencies. The coefficients of each block are grouped into frequency bands. For each frequency band of each block, a scale factor is estimated for the band, and the energy of the band for the block is compared with the energy of the band of an adjacent sample block, wherein the blocks may be adjacent to each other in either or both of an interchannel and a temporal sense. If the ratio of the band energy for the first block to the band energy for the adjacent block is less than some value, the scale factor of the band for the first block is increased. The coefficients of the band for each block are quantized based on the resulting scale factor. The encoded audio signal is generated based on the quantized coefficients and the scale factors.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: May 9, 2017
    Assignee: EchoStar Technologies L.L.C.
    Inventor: Nandury V. Kishore
  • Patent number: 9648421
    Abstract: A method (100) for matching characteristics of two or more transducer systems (202, 208). The method involving: receiving input signals from a set of said transducer systems; determining if the input signals contain a pre-defined portion of a common signal which is the same at all of said transducer systems; and balancing the characteristics of the transducer systems when it is determined that the input signals contain the pre-determined portion of the common signal.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: May 9, 2017
    Assignee: Harris Corporation
    Inventors: Anthony R. A. Keane, Bryce Tennant
  • Patent number: 9621124
    Abstract: Equalizer controller and controlling method are disclosed. In one embodiment, an equalizer controller includes an audio classifier for identifying the audio type of an audio signal in real time; and an adjusting unit for adjusting an equalizer in a continuous manner based on the confidence value of the audio type as identified.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: April 11, 2017
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Lie Lu, Jun Wang, Alan Seefeldt, Mingqing Hu
  • Patent number: 9613262
    Abstract: The technology disclosed can provide capabilities such as using vibrational sensors and/or other types of sensors coupled to a motion-capture system to monitor contact with a surface that a user can touch. A virtual device can be projected onto at least a portion of the surface. Location information of a user contact with the surface is determined based at least in part upon vibrations produced by the contact. Control information is communicated to a system based in part on a combination of the location on the surface portion of the virtual device and the detected location information of the user contact. The virtual device experience can be augmented in some implementations by the addition of haptic, audio and/or visual projectors.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: April 4, 2017
    Assignee: LEAP MOTION, INC.
    Inventor: David S Holz
  • Patent number: 9515629
    Abstract: An audio processor has an active noise cancellation (ANC) processor to compute an S-filter, which estimates a transfer function from an earpiece speaker, that is to be worn by a user, to an error microphone. The ANC processor adaptively produces an anti noise signal for reducing ambient noise that can be heard by the user. An adaptive equalization (EQ) processor has an EQ filter controller that adjusts an EQ filter, while audio user content is being filtered in accordance with the EQ filter before being fed to the speaker and then heard by the user. Other embodiments are also described and claimed.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: December 6, 2016
    Assignee: Apple Inc.
    Inventors: Andre L. Goldstein, Vladan Bajic
  • Patent number: 9503819
    Abstract: A system or method for controlling speaker acoustic output in a multi-speaker audio system having multiple listening zones include substantially simultaneously adjusting gain and at least one additional parameter, such as filtering and/or other signal processing parameters of at least a first speaker relative to at least a second speaker in response to a change in balance and/or fade settings of the audio system across a range of balance and fade settings except for a maximum or minimum setting, and muting at least one speaker in response to the maximum or minimum balance or fade setting.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: November 22, 2016
    Assignee: Harman International Industries, Inc.
    Inventor: Jeffrey M. Brockmole
  • Patent number: 9443502
    Abstract: A method for reducing parasitic vibrations of a loudspeaker environment while maintaining the perception of the low frequencies of an original electric sound signal for broadcast after processing by the loudspeaker having a cut-off frequency. A vibration frequency band is identified that causes the loudspeaker to vibrate. A low frequency band of the original sound signal having a frequency close to the cut-off frequency of the loudspeaker is identified as an upper limit. At least one harmonic signal from the isolated low frequency band of the original sound signal is generated. The original sound signal and the harmonic signal are combined to obtain a recombined signal. The vibration frequency band is removed from the recombined signal to obtain a signal for broadcast by the loudspeaker.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: September 13, 2016
    Assignee: ARKAMYS
    Inventors: Frederic Amadu, Thomas Esnault, Alexandre Fenieres
  • Patent number: 9264828
    Abstract: Audio systems for a vehicle and methods of operating an audio device in a vehicle cabin are provided. A method of operating an audio device directs an acoustic signal to at least one vehicle cabin receiver (VCR) of the audio device; measures sound pressure levels (SPLVCM) for acoustic energy received by at least one vehicle cabin microphone (VCM) of the audio device during a time period ?t; calculates a sound pressure level (SPL) dose (SPL_Dose?t) during the time period ?t using the sound pressure levels SPLVCM of the at least one VCM; combines the SPL dose (SPL_Dose?t) with an SPL dose of a previous time period to form a total SPL dose (SPL_Dosetotal); and performs an action to modify operation of the audio device when the total SPL dose is greater than a predetermined threshold.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: February 16, 2016
    Assignee: Personics Holdings, LLC
    Inventors: John Usher, Steven W. Goldstein
  • Patent number: 9240814
    Abstract: In certain embodiments, systems for receiving one or more echoes are provided. The system comprises a first attenuator, a first amplifier, and a second attenuator. The first attenuator is configured to receive the one or more echo signals, and generate a corresponding set of first attenuated echo signals, respectively, based on a number of signal strengths of the one or more echo signals. The first amplifier is configured to receive and amplify the set of first attenuated echo signals to thereby generate a set of first amplified echo signals corresponding to the one or more first attenuated echo signals, respectively. The second attenuator is configured to receive the set of first amplified echo signals and generate a set of second attenuated echo signals corresponding to the set of first amplified echo signals, respectively, based on a number of signal strengths of the set of first amplified echo signals, respectively.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: January 19, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Shabbir Amjhera Wala, Shagun Dusad, Sandeep Oswal, Vajeed Nimran
  • Patent number: 9025793
    Abstract: A selector selects an analog audio signal input to one input port from among analog audio signals input to multiple input ports according to an instruction from the user. An analog gain control circuit amplifies the analog audio signal received from the selector, with a corresponding one of the gains set for the respective input ports. An analog gain control circuit is configured to gradually change its gain when the gain is switched. An A/D converter converts an output signal of the analog gain control circuit into a digital audio signal. A first audio signal processing circuit is monolithically integrated on a signal semiconductor substrate.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: May 5, 2015
    Assignee: Rohm Co., Ltd.
    Inventor: Mitsuteru Sakai
  • Patent number: 9020166
    Abstract: A volume amplitude limiting device includes a volume adjustment unit, an amplitude limiting unit, and a control unit. The volume adjustment unit adjusts the amplitude of an input sound signal to a larger degree as the adjustment value increases and outputs the resulting sound signal. The amplitude limiting unit limits the amplitude of the sound signal output from the volume adjustment unit to an output limitation value and outputs the resulting signal to a speaker. The control unit sets an adjustment value for the volume adjustment unit and also sets an output limitation value for the amplitude limiting unit according to an adjustment value.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: April 28, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Naokazu Ogasahara, Yoshihiro Koba
  • Patent number: 9008319
    Abstract: Sound pressure level limiter with anti-startle feature for audio systems are disclosed. The anti-startle feature may be implemented with a delta incident detector for detecting delta acoustic incidents that exceed a predetermined acoustic startle boundary, a delta limiter for determining an anti-startle gain, and an amplifier to apply the anti-startle gain to the input signal. The delta incident detector may detect delta incidents based on an estimated true SPL delivered by a transducer to a predetermined datum point. The estimated true SPL may be determined by based on a measured receiving frequency response of the transducer. An SPL limiter may also determine an SPL gain in response to detecting an SPL acoustic incident that exceeds a predetermined SPL threshold, and an amplifier may apply the SPL gain to the input signal to reduce it below the threshold.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: April 14, 2015
    Assignee: Plantronics, Inc.
    Inventors: Antony M W. Bayley, William R. Morrell, Iain J. McNeill, Kwangsee A. Woo
  • Publication number: 20150098588
    Abstract: The present disclosure relates to an apparatus and a method for controlling sound output. The apparatus includes a sound processor configured to amplify a sound signal to a certain level to output an output signal to a speaker. An analyzer is configured to monitor whether an output level of the output signal output from the sound processor exceeds a maximum output level of the speaker between the sound processor and the speaker, and to convert the output signal into a signal of a frequency domain to analyze an energy amount for each frequency when the output level of the output signal exceeds the maximum output level of the speaker. A controller is configured to control a volume for the output signal of the corresponding frequency band when a frequency band having the energy amount exceeding the threshold value is detected from the analyzer.
    Type: Application
    Filed: December 27, 2013
    Publication date: April 9, 2015
    Applicant: Hyundai Motor Company
    Inventor: Seong Un KIM
  • Patent number: 8995687
    Abstract: Methods and systems are provided for, volume interactions for connected playback device. In one example, a plurality of playback devices may be rendering audio in synchrony, when a volume adjustment is made for the plurality of playback devices as a group. In one case, a first playback device in the plurality of playback devices may have a volume limit, as indicated by a state variable associated with the first playback device. In this case, the resulting volume adjustment for the first playback device may be made according to both the group volume adjustment and the volume limit of the first playback device.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: March 31, 2015
    Assignee: Sonos, Inc.
    Inventors: Frank Marino, Jr., Eduardo Ahumada Apodaca, Robert Andrew Lambourne
  • Patent number: 8995683
    Abstract: Disclosed are methods and devices for adapting a ringtone in accordance with ambient noise. In one embodiment a method includes processing an ambient noise signal to determine an ambient noise volume. When there is an incoming communication and it is determined that the ambient noise has a low ambient noise volume, a method can include generating a ringtone having a ringtone volume that is initially a low volume and increasing the ringtone volume over a predetermined period of time. A method can include applying a filter to the ringtone signal to increase a signal-to-noise ratio, the filter configured to increase an amplitude of a frequency that is not one of the predominant frequencies of the ambient noise and that the transducer is configured to output according to the transducer frequency response. In another embodiment, a second transducer may generate a ringtone output in addition to the first transducer.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: March 31, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Adrian M. Schuster, Christopher A. Evans, Ukrit Visitkitjakarn, Joel Anthony Clark
  • Patent number: 8989406
    Abstract: Embodiments are directed toward user profile based audio adjustment techniques. The techniques are used to render various audio and/or audio/video content having different audio output parameter values in accordance with a user profile that characterizes a user's desired value and/or range of one or more of the output parameter levels.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: March 24, 2015
    Assignees: Sony Corporation, Sony Network Entertainment International LLC
    Inventors: Ling Jun Wong, True Xiong
  • Patent number: 8989394
    Abstract: Disclosed are an active delay method and an improved wireless binaural hearing device. The binaural hearing device includes: a first hearing device including a first microphone, an amplifier and a wireless transmitter; and a second hearing device including a second microphone, an amplifier, a wireless transmitter, a wireless receiver which receives a signal from the wireless transmitter, an active delay circuit which synchronizes the received signal with a signal acquired by the second microphone, a neural network which synchronizes the delayed signal, and a speaker which converts the synchronized signal into a voice signal. With this configuration, it is possible to prevent incorrect detection of the position of the sound source or paralalia due to a time delay which is produced in the wireless binaural hearing device and reduce noises due to a time difference between both hearing devices, thereby providing a binaural hearing device with high quality.
    Type: Grant
    Filed: September 24, 2011
    Date of Patent: March 24, 2015
    Assignee: Kyunpook National University Academic Industry Cooperation Foundation
    Inventors: Jin Ho Cho, Ki Woong Seong, Jyung Hyun Lee, Myoung Nam Kim, Sang Hyo Woo
  • Patent number: 8983086
    Abstract: An output controller and an method for outputting a signal flow to one or more earphone jacks according to a connection status of each earphone jack. The output controller includes an interface unit having more than one earphone jacks and an output control unit. The output control unit includes a signal input terminal for receiving a signal flow, a detector, and a determining module. The detector detects whether each earphone jack is connected with an earphone and outputs one or more detected signals representing the connection status of the earphone jacks. The determining module outputs the signal flow directly to the connected earphone jack if only one earphone jack is connected to the earphone or distributes the signal flow being amplified correspondingly into each connected earphone jack if more than one earphone jack is connected to the earphones.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: March 17, 2015
    Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Yang Xin, Tsung-Jen Chuang, Jun Zhang, Jun-Wei Zhang, Ren-Wen Huang, Qiang You
  • Patent number: 8976974
    Abstract: The invention relates to a method for automated tuning of a sound system, the sound system comprising delay lines, equalizing filters, and at least two loudspeakers, the method comprising the steps of reproducing a useful sound signal through the loudspeakers, measuring sound pressure values at least one location, providing a target transfer function for tuning the delay lines and the equalizing filters of the sound system, the target transfer function representing a desired transfer characteristics of the sound system, adjusting the delay of the delay lines, and adjusting amplitude responses of the equalizing filters such, that the actual transfer characteristics of the sound system approximates the target function.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: March 10, 2015
    Assignee: Harman Becker Automotive Systems GmbH
    Inventors: Markus Christoph, Leander Scholz
  • Patent number: 8972248
    Abstract: A band broadening apparatus includes a processor configured to analyze a fundamental frequency based on an input signal bandlimited to a first band, generate a signal that includes a second band different from the first band based on the input signal, control a frequency response of the second band based on the fundamental frequency, reflect the frequency response of the second band on the signal that includes the second band and generate a frequency-response-adjusted signal that includes the second band, and synthesize the input signal and the frequency-response-adjusted signal.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 3, 2015
    Assignee: Fujitsu Limited
    Inventors: Takeshi Otani, Taro Togawa, Masanao Suzuki, Shusaku Ito
  • Patent number: 8964997
    Abstract: Ambient sound is masked by receiving an audio signal, monitoring an acoustic signal that includes components of both the ambient sound the audio signal, determining a sound level sufficient to at least partially mask the ambient sound, and reproducing the received audio signal to produce an output acoustic signal at the determined sound level.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: February 24, 2015
    Assignee: Bose Corporation
    Inventor: Daniel M. Gauger, Jr.
  • Patent number: 8965181
    Abstract: A method of automatic announcer voice removal from a televised sporting event. A sound processing circuit divides an audio input signal of a televised sporting event into multiple audio segments. The audio input signal includes crowd noise and announcer commentary. If an audio segment does not exceed a pre-defined amplitude threshold, a voice removal utility adds the audio segment to a recent crowd noise library and stores the segment in an output buffer. If the amplitude of a segment exceeds the threshold, the utility adds the segment to a recent announcer voice library. The sound processing circuit generates an attenuated version of the segment and blends the attenuated version with one or more mixed segments from the recent crowd noise library. The voice removal utility stores the attenuated and blended segment in the output buffer and outputs one or more audio segments from the buffer in a chronological order.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: February 24, 2015
    Assignee: International Business Machines Corporation
    Inventor: Nathan J. Harrington
  • Publication number: 20150043749
    Abstract: Nested inductor arrays magnetically modulate an analog audio input signal recursively, so that the overall amplitude envelope of the output signal replicates the wave pattern of the input signal. The nested inductor arrays produce multiple levels of recursive modulation, so that the output signal incorporates multiple integrated self-similar harmonic layers. The phasing of the various layers are locked in by the analog waveform of the output signal itself. As a result, the spatial “depth” and temporal “immediacy” of the original analog recording is restored and can be encoded in digital format.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Inventor: James J. McGourty, JR.
  • Publication number: 20150043748
    Abstract: According to an aspect, an electronic device includes: a piezoelectric element; a sound generating unit that is vibrated by the piezoelectric element and generates a vibration sound to be transmitted while vibrating part of a human body; and a detection unit that detects contact of the part of the human body with the sound generating unit. A volume of the vibration sound is changed corresponding to a detection result of the detection unit.
    Type: Application
    Filed: April 25, 2013
    Publication date: February 12, 2015
    Inventor: Tomohiro Sudo
  • Patent number: 8948417
    Abstract: According to one embodiment, a characteristic correcting device includes: a correction filter configured to correct sound quality characteristics of a plurality of bands in a frequency range of an input signal based on a frequency characteristic which is set in advance to generate an output signal; an input module configured to input a surrounding sound signal of sound around an output device outputting the output signal; and an adjusting module configured to reduce the number of the bands of which the sound quality characteristics are to be corrected of the bands in the frequency range of the input signal in accordance with an increase in amplitude of the surrounding sound signal which is input.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: February 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yusaku Kikugawa, Takashi Sudo, Masataka Osada, Takehiko Isaka
  • Patent number: 8934634
    Abstract: A noise level of an output signal is maintained low. An adjacent interference detecting unit compares a signal level of a wide band signal which is a desired station signal of a relatively wide band and a signal level of a narrow band signal which is a desired station signal of a relatively narrow band, and judges that adjacent interference has occurred when the signal level of the narrow band signal is less than or equal to a predetermined level even though the signal level of the wide band signal is greater than or equal to a predetermined level. A variable amplifier (36) attenuates an L?R signal and forms a monophonic signal when the signal level of the narrow band signal is lower than a predetermined level. With this process, when there is adjacent interference, a signal level of the narrow band signal at which the attenuating unit starts attenuating the L?R signal is changed to a relatively high value.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: January 13, 2015
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Kazunari Kurokawa, Shinya Inaba
  • Patent number: 8929567
    Abstract: Apparatuses for and methods of carrying out dynamic equalization processing of an audio signal, and apparatuses for and methods of controlling such equalization processing of the audio signal to dynamically adjust the time-varying spectrum of an audio signal to more closely match a user specified target time-invariant perceived audio signal spectrum while preserving the original dynamic range of the audio signal. The dynamic equalization is carried out according to a user-defined spectral profile specified by a control interface that allows a user to define, create, modify and/or apply the user-defined spectral profile.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: January 6, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett Graham Crockett, Alan J. Seefeldt
  • Patent number: 8917885
    Abstract: A pseudo noise superimposing unit superimposes a pseudo noise (M-sequence) to an audio signal picked up by a microphone and outputs the superimposed signal to an amplifying system. An calculating unit calculates a correlation value between the audio signal picked up by the microphone and the pseudo noise. The calculating unit estimates a gain of a closed loop based on the correlation value. A gain control unit suppresses a gain of the audio signal based on the estimated gain of the closed loop.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: December 23, 2014
    Assignee: Yamaha Corporation
    Inventors: Shinya Sakurada, Takuro Sone, Takaya Kakizaki, Sachiya Sasaki, Kosuke Saito
  • Patent number: 8917888
    Abstract: A control terminal apparatus includes a transmission unit transmitting a control signal to audio output apparatuses, a display unit, an operation detector detecting an operation associated with display content, and a controller displaying individual volume setting sections which correspond to the audio output apparatuses and which include operation members performing variable operations of volume settings while volume setting states are displayed, displaying a master volume setting section including an operation member performing collective variable operation while the volume balance of the audio output apparatuses is maintained, executing clear display of a setting changeable range in which the volume balance is maintained in the master volume setting section, generating, when the operation detector detects an operation performed on one of the individual volume setting sections or the master volume setting section, a control signal corresponding to content of the operation, and causing the transmission unit
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: December 23, 2014
    Assignee: Sony Corporation
    Inventor: Junichi Nakamura
  • Publication number: 20140369522
    Abstract: A sound-output-control device including an acquisition unit which acquires an anaerobic threshold, a reception unit which receives an input about exercise intensity, a calculation unit which calculates a value indicating a target heart rate of a user on the basis of the acquired anaerobic threshold and the received exercise-intensity input, a detection unit which detects a value indicating the current tempo of a physical exercise done by the user, and a control unit that controls a sound output on the basis of a result of a comparison of the target heart-rate value calculated by the calculation unit and the current physical-exercise-tempo value detected by the detection unit, so as to lead a heart rate of the user so that the heart rate of the user attains the target heart rate is provided.
    Type: Application
    Filed: August 29, 2014
    Publication date: December 18, 2014
    Applicant: SONY CORPORATION
    Inventors: Masamichi Asukai, Katsuya Shirai, Makoto Inoue, Akane Sano