Abstract: An audio signal processing device includes: head related transfer function convolution processing units convoluting head related transfer functions with audio signals of respective channels of plural channels, which allow the listener to listen to sound so that sound images are localized at assumed virtual sound image localization positions concerning respective channels of the plural channels of two or more channels when sound is reproduced by electro-acoustic transducer means; and 2-channel signal generation means for generating 2-channel audio signals to be supplied to the electro-acoustic transducer means from audio signals of plural channels from the head related transfer function convolution processing units, wherein, in the head related transfer function convolution processing units, at least a head related transfer function concerning direct waves from the assumed virtual image localization positions concerning a left channel and a right channel in the plural channels to both ears of the listener is n

Abstract: Improvements in ear buds includes a two-in-one ear buds with a light-up cable provides two sets of stereo ear buds that can be joined for a single person to use or separated so the stereo sound can be enjoyed by two people at the same time. The connecting cord is a flat cord with magnetic coupling that joins the cords together to reduce wiring that connects from the audio device to the ear buds. The cable joins a left and a right set of wiring and the ear buds are coupled to provide a single left and right or a pair of left and a pair or right separate ear buds. The cord has illumination LED elements that provide different color patterns to interact with the mp3. The lighting controller gives the user the option to turn the lights on and off with buttons on the controller.

Abstract: A personal listening system uses the FM broadcast band for transmission and reception. The system includes a base unit and physically separate right- and left-ear listening units. The base unit includes an FM stereo transmitter. Each listening unit demodulates and amplifies the received signal, but the right-ear unit only amplifies the right channel and the left-ear unit only amplifies the left channel. The base unit may be a digital music player, book reader, video player, smart cellular telephone, or any other portable device. The base unit may include a display for displaying the selected FM frequency. The base unit may be a self-contained or integrated unit, or a device that couples to a digital music player, smart cellular telephone or other device to receive the audio signal therefrom. The right- and left-ear listening units may be any type of on-ear, in-ear or around-ear sound delivery devices including earbuds.

Abstract: A three-dimensional (3D) sound gaming application can include an ultrasonic sound system, one or more gamers, a gaming console and a throat microphone set. The ultrasonic sound system can include a digital signal processing (DSP) that can adjust the phase, delay, reverb, echo, gain, magnitude or other audio signal component of an audio signal or audio signal components received from the gaming console; an amplifier which can amplify the processed audio signal; and a pair of emitters which can emit ultrasonic signals to each of the gamer's ears to produce a 3D sound effect. The throat microphone set can include a throat microphone which can integrate a low pass filter to attenuate any picked up, ultrasonic carrier frequency signals from the emitted ultrasonic waves. In addition, the throat microphone set can also include an ear speaker piece with one or more apertures for allowing sound produced by ultrasonic waves to enter the gamer's ear canal.

Abstract: In accordance with method and systems of the present disclosure, a processing circuit may implement an adaptive filter having a response that generates the anti-noise signal from the reference microphone signal to reduce the presence of the ambient audio sounds heard by the listener, a coefficient control block that shapes the response of the adaptive filter in conformity with the error microphone signal and the reference microphone signal by adapting the response of the adaptive filter to minimize the ambient audio sounds in the error microphone signal, and a coefficient bias control block which biases coefficients of the coefficient control block towards zero in a range of frequencies outside of a frequency response of the source audio signal.

Abstract: The application relates to a compressor circuit for a listening device, the compressor circuit comprising a pair of input terminals and a pair of output terminals, the compressor circuit being adapted for receiving an electric input signal representing an audio signal with an input voltage swing Vipp at the input terminals and for providing a possibly compressed version of the input signal as an output signal with an output voltage swing Vopp at the output terminals, the compressor circuit comprising. The application further relates to a listening device and to the use of the compressor circuit. The object of the present application is to provide a compressor circuit with a proper functioning also at relatively low input levels.

Abstract: Systems, methods, apparatus, and machine-readable media for detecting head movement based on recorded sound signals are described.

Abstract: An input device of an electronic apparatus including an input detection unit which is provided on the electronic apparatus at a position that is difficult to be seen by a user who uses the input device, and which detects an input operation of the user; a movement distance detection unit that detects a movement distance of an input position over the input detection unit; and an action control unit that controls a predetermined action of the electronic apparatus based on the movement distance detected by the movement distance detection unit.

Abstract: An augmented reality (AR) audio system for augmenting environment or ambient sound with sounds from a virtual speaker or sound source positioned at a location in the space surrounding an AR participant. The sound from the virtual speaker may be triggered by an action of the listener and/or by the location or relative orientation of the listener. The AR audio system includes stereo earphones receiving an augmented audio track from a control unit, and binaural microphones are provided to capture ambient sounds. The control unit operates to process trigger signals and retrieve one or more augmentation sounds. The control unit uses an AR audio mixer to combine the ambient sound from the microphones with the augmentation sounds to generate left and right ear augmented audio or binaural audio, which may be modified for acoustic effects of the environment including virtual objects in the environment or virtual characteristics of real objects.

Abstract: Systems and methods of processing audio signals are described. The audio signals comprise information about spatial position of a sound source relative to a listener. At least one audio filter generates two filtered signals for each of audio signal. The two filtered signals are mixed with other filtered signals from other audio signals to create a right output audio channel and a left audio output channel, such that the spatial position of the sound source is perceptible from the right and left audio output channels.

Abstract: Electronic devices and accessories for electronic devices such as headsets are provided. The electronic devices may produce audio output. The headsets may include earbuds with speakers that play the audio output for a user while the earbuds are located in the user's ears. Circuitry in an electronic device and a headset may be used in evaluating how well the earbuds are sealed to the user's ears. In response to seal quality measurements, informative messages can be generated for the user, overall earbud volume may be increased, balance adjustments may be made to correct for mismatched balance between left and right earbuds, equalization settings may be adjusted, and noise cancellation circuitry settings can be changed. Electrical impedance measurements and acoustic measurements can be used in evaluating seal quality.

Abstract: A stereophonic sound output apparatus and an early reflection generation method thereof. The stereophonic sound output apparatus includes an early reflection generator to implement an early reflection when a 5.1 channel audio signal is down-mixed to a 2-channel audio signal to play back a 5.1 channel audio signal through a 2-channel headphone. The early reflection generator generates early reflections in pairs in which there is an appropriate time difference between the left side reflections and the right side reflections by generating an interaural time difference between two input audio signals and filtering. It is possible to copy the characteristics of early reflections in a real listening room. It is also possible to implement an early reflection similar to a real reflection measured in an apparatus for playing back the 5.1 channel audio signal through 2-channel headphone. A natural 5.1 channel effect may also be obtained using little computation.

Abstract: The invention is directed at a headset for a mobile communication device having a multi-button control and is implemented with a standard headset jack. The multi-button control is decoded by a microprocessor after which an encoded signal is then transmitted from the processor to the handset. In this manner, by using the standard jack, no additional hardware is required on the handset.

Abstract: A multi-channel headphone has a housing, multiple independent sound channels formed in the housing, and at least one speaker unit mounted inside the housing. The at least one speaker unit produces sound directly passing through one of the sound channels and refracted through the rest of sound channels. As the refracted sound is slower than the directly travelling sound, multiple layers of auditory feeling can be provided and a stereo sound effect can be generated for users to enjoy better auditory feeling.

Abstract: The invention provides earphone arrangements for use with electronic host devices, such as cellular telephone handsets and music storage and reproduction devices, and it provides in particular earphone arrangements with ambient noise cancellation (“ANC”). Typically, in prior arrangements, the complex signal processing required for ANC is carried out in the earphones themselves and/or in a pod connected between the earphones and the host device. The invention configures the processing elements such that the ANC signal-processing function is transferred to an ANC processor incorporated into the host device.

Abstract: A device (100) for processing audio data, wherein the device (100) comprises a first audio reproduction unit (102) adapted for reproducing a first part of the audio data and adapted to be attached to a left ear (106) of a user (110), a second audio reproduction unit (104) adapted for reproducing a second part of the audio data and adapted to be attached to a right ear (108) of the user (110), a detection unit (112) adapted for detecting a left/right inversion of the first audio reproduction unit (102) and the second audio reproduction unit (104), and a control unit (114) adapted for controlling the first audio reproduction unit (102) for reproducing the second part of the audio data and for controlling the second audio reproduction unit (104) for reproducing the first part of the audio data upon detecting the left/right inversion.

Abstract: An interface between a programming system and a set of headphones allows the transmission of both audio and digital data over analog audio signal lines of the headphones. Circuitry on the programming system is configured to transmit digital data over the analog audio signal lines by either modulating a carrier frequency with the digital data such that the digital data is transmitted over non-audible frequencies or by time-multiplexing the transmission of digital data and analog audio data. Circuitry on the headphones is configured to receive digital data by demodulating the modulated digital data or by de-multiplexing the time-multiplexed digital and analog audio data. In other embodiments of acoustic headphones which include microphones, a Talk-Through functionality may be implemented.

Abstract: The present invention relates to a method for processing an original audio signal of N.x channels, N being greater than 1 and x being greater than or equal to 0, comprising a step of multichannel processing of said input audio signal by a multichannel convolution with a predefined imprint, said imprint being formulated by the capture of a reference sound by a set of speakers disposed in a reference space, and further comprising an additional step of selecting at least one imprint from among a plurality of imprints previously formulated in different sound contexts.

Abstract: A method for selecting a perceptually optimal HRTF in a database according to morphological parameters. A first database includes the HRTFs of subjects M, a second database includes the morphological parameters of the subjects, and a third database corresponds to a perceptual classification of the HRTFs. The N most relevant morphological parameters are sorted by correlating the second and third databases. A multidimensional space is created, which optimizes the spatial separation between the HRTFs according to the classification thereof in the third database to obtain an optimized space. An optimized projection model MPO is calculated for correlating K optimal morphological parameters with the corresponding position of the HRTF filters in the optimized space. For any user whose HRTF is not included in the database, at least one HRTF can be selected from the database BD1 according to the parameters K of the user and the optimized projection model MPO.

Abstract: A modular headphone system and method of assembling a pair of headphones to satisfy individual personal fashion, comfort and performance preferences. The inventive headphone system is comprised of a plurality of modular interchangeable headphone components, each component being interchangeable and having a plurality of unique fashion, comfort or quality grade variations.

Abstract: The present technology provides robust, high quality dereverberation of an acoustic signal which can overcome or substantially alleviate the problems associated with the diverse and dynamic nature of the surrounding acoustic environment. The present technology utilizes acoustic signals received from a plurality of microphones to carry out a multi-faceted analysis which accurately identifies reverberation based on the correlation between the acoustic signals. Due to the spatial distance between the microphones and the variation in reflection paths present in the surrounding acoustic environment, the correlation between the acoustic signals can be used to accurately determine whether portions of one or more of the acoustic signals contain desired speech or undesired reverberation. These correlation characteristics are then used to generate signal modifications applied to one or more of the received acoustic signals to preserve speech and reduce reverberation.

Abstract: The present disclosure provides an earphone power amplifier, including a ground contact connected to a ground wire of an earphone, a left sound channel power amplifying circuit connected to a left sound channel of the earphone, and a right sound channel power amplifying circuit connected to a right sound channel of the earphone. The left sound channel power amplifying circuit includes a first operational amplifier and a first positive feedback exported from an input end of the first ferrite bead to an in-phase input end of the first operational amplifier, the right sound channel power amplifying circuit includes a second operational amplifier and a second positive feedback exported from the input end of the first ferrite bead to an in-phase input end of the second operational amplifier.

Abstract: Boomless-microphones are described for a wireless helmet communicator with siren signal detection and classification capabilities. An acoustic component receives an audio signal and comprises a left acoustic sensor and a right acoustic sensor. The left acoustic sensor is mountable or attachable to the surface of a left wall of a helmet and the right acoustic sensor is mountable or attachable to the surface of a right wall. A speaker component can generate an echoless audio signal via signal inversion of the audio signal, outputs to a left speaker mountable or attachable to a left ear area of the helmet and a right speaker mountable or attachable to a right ear area of the helmet. A signal enhancement component can increase an intensity of the first audio signal associated with an emergency siren based on a determined proximity of an emitting emergency vehicle or emergency object to the device.

Abstract: A portable electronic device includes an earphone jack for receiving an earphone plug, a switch unit and a signal processing unit. The switch unit is connected to the earphone jack and is switchable between a first state and a second state. The signal processing unit is connected to the earphone jack and the switch unit. The signal processing unit is used to identify a type of the earphone plug received in the earphone plug and control the switch unit to switch to either the first state or the second state according to the type of the earphone plug.

Abstract: A system for providing binaural telepresence includes two communication devices, and two sets of active noise reducing headphones having an active noise-cancelling mode and an active hear-through mode, coupled to the respective communication devices and configured to provide left and right feed-forward microphone signals to the communication devices. The first communication device is configured to transmit the first left and right feed-forward microphone signals to the second communication device. The second communication device is configured to provide the first left and right feed-forward microphone signals to the second set of headphones.

Abstract: A hand-held electronic device includes an earpiece, a first speaker having a first primary audio output ported to the earpiece, a second speaker having a second primary audio output and a second bass reflex output, with the second bass reflex audio output also being ported to the earpiece. The device includes a use case manager configured to determine a mode of operation of the device, and a controller configured to drive the first and second speakers in either a broadcast mode or a private mode in response to a signal from the use case manager. The polarity of the signal driving the second speaker is inverted for frequencies below the bass reflex port resonance frequency, to thereby provide a higher total combined energy in the vicinity of port resonance.

Abstract: The multimodal headset may include: a first earpiece including a first earphone speaker and external speaker; a second earpiece including a second earphone speaker and external speaker; a controller for operating the multimodal headset in at least three modes, the controller may include: a power switch; a speaker switch; an earphone amplifier circuit; a speaker amplifier circuit; and a power source, wherein the power source is positioned within the first or second earpiece; wherein the input signal is routed to the earphone speakers, bypassing the earphone amplifier circuit, when the power switch is in an off position, wherein the input signal is routed through the earphone amplifier circuit to the earphone speakers when the power switch is in an on position and the speaker switch is in an internal earpiece position, and wherein the input signal is routed through the speaker amplifier circuit to the external speakers when the power switch is in the on position and the speaker switch is in an external speaker

Abstract: The present invention is directed to mobile devices. More specifically, embodiments of the present invention provide one or more antennas embedded into headsets and/or earphone for mobile devices. In an embodiment, an antenna wire having a length of about 100 mm to 150 mm is implement as a part of a headset or an earphone that has an overall length of at least 90 cm, where the antenna wire is substantially insulated from the audio wire(s). The headset or earphone is connected to a mobile device that receives television signals from the antenna. In a specific embodiment, a mobile device includes a connection circuit that is configured to separate television signals form audio signals. In an exemplary embodiment, various components of the mobile device positioned at predetermine location away from the connection circuit to reduce noise and/or interference.

Abstract: A surround sound virtualization apparatus and method. The surround sound virtualization apparatus may include an audio decoder to perform head-related transfer function (HRTF) filtering, and a time delay unit to provide a time delay to a plurality of output signals of the audio decoder.

Abstract: An ear unit for stably fitting in an ear includes a first surface facing inwardly toward the ear, a second, opposite surface facing outwardly from the ear and an outer circumferential surface formed between the first and second surfaces. The outer circumferential surface is shaped as a decremental curve. The distance between the ends of the decremental curve is approximately equal to the distance between a first cavity formed under the tragus of the ear and second cavity covered by the lower node of the antihelix of the ear. The first surface is provided with a curvature that provides a contact surface that substantially conforms to the concha, providing an improved attachment, thereby enabling the ear unit to fit closely against the concha when the ear unit is positioned into the ear.

Abstract: The invention relates to a radiation-resistant earphone wire, particularly to signal lines having at least a radiation-resistant device on a predetermined position thereof and the radiation-resistant device including: a radiation absorber being a cylindrical body, made of a magnetic material with high permeability and having a first through hole in a middle thereof and a radiation blocker made of a metal sleeve body and coating on an outer periphery of the radiation absorber and a top of the radiation blocker corresponding to the first through hole has a second through hole for the signal lines passing through. Based on the features disclosed, the radiation absorber at an inner layer absorbs EMI radiation and the radiation blocker at an outer layer has a shielding effect and both the radiation absorber and the radiation blocker together form an anti-EMI structure, avoiding human brain damage caused by the electromagnetic waves.

Abstract: The present invention provides a multipurpose connector for multiplexing a headset interface into a high-definition video/audio input interface and a handheld device including the multipurpose connector. The multipurpose connector includes a headset connector, a selecting switch, a high-definition video/audio transceiver, and an audio output module. The headset connector includes a first audio terminal and a second audio terminal. The audio output module is configured to output an audio signal of the headset. The selecting switch includes first and second lines. When the selecting switch communicates with the first line, the first audio terminal and the second audio terminal are coupled to a pair of differential transmission lines respectively, and the pair of differential transmission lines is configured to transmit high-definition video/audio data output by the high-definition video/audio transceiver.

Abstract: Multiple individual wireless earbuds provide audio from a common audio source. A user may thereby enjoy audio in both ears while also benefiting from an entirely wireless configuration. The individual wireless earbuds may each receive the audio signal from the common audio source and then produce audio accordingly. Each earbud may have a channel setting to define whether a given earbud will produce left channel or right channel audio for a multi-channel audio signal. The individual wireless earbuds may alternatively have a master-slave configuration where a master earbud receives a wireless audio signal from the common source, plays audio based on the audio signal, and transmits a wireless signal based on the wireless audio signal to the slave earbud. The slave earbud then plays audio based on the wireless signal from the master earbud.

Abstract: Techniques for removing crosstalk from a system, e.g., an audio system, having first and second (e.g., left and right) channels. In an aspect, first and second output voltages of corresponding first and second amplifiers are sampled during a calibration mode, in which one of the amplifiers is driven with a reference voltage, and the output of the other of the amplifiers is configured to have a high impedance. The sampled first and second output voltages may be digitized for processing by a processor to estimate a crosstalk removal function. The crosstalk removal function may then be multiplied with the input signals and added in a cross-channel manner to the first and second input signals prior to amplification to remove crosstalk from the system. In certain aspects, multiple reference voltages may be applied during the calibration mode to improve the estimate of the crosstalk removal function.

Abstract: A mobile device system that includes left and right earphones, and a mobile device connectable to the left and right earphones. Each of the left and right earphones includes at least one of an acceleration sensor and a geomagnetic sensor. The mobile device includes a controller that monitors a wearing state of the individual left and right earphones by a user on a basis of output from the least one of the acceleration sensors and the geomagnetic sensors, and controls a behavior of the mobile device connected to the left and right earphones according to the monitored wearing state of the left and right earphones by the user.

Abstract: A headphone system includes sound processor which calculates properties of the environment from signals from an internal microphone and an external microphone. The impulse response of the environment may be calculated from the signals received from the internal and external microphones as the user speaks.

Abstract: A device for coupling to a connector on an ear cup of a headset includes a mating connector corresponding to the connector of the headset. The mating connector includes a crossover conductor coupled to a first and a second terminal within the mating connector. One or more accessory circuits is provided by the device, including a lamp configured to direct light onto a surface external to the device or a position detection circuit usable to adjust three-dimensional audio signals to account for the direction the user is looking.

Abstract: A front surround sound reproduction system which improves the performance of beam steering by using a speaker array arranged geometrically on two or more planes or on one curved surface, and a signal reproducing method of the system. The audio reproduction apparatus to reproduce a multi-channel audio signal by using a plurality of speakers includes a signal distribution unit to duplicate a multi-channel audio signal and to distribute the duplicated signals as one or more groups of multi-channel signals corresponding to one or more speaker array groups, a steering processing unit to form sound beams with steering angles predetermined in relation to each speaker array group, from the groups of multi-channel signals distributed by the signal distribution unit, and a speaker array unit having one or more speaker array groups to reproduce the sound beams of each group formed by the steering processing unit, in the speaker array group.

Abstract: A simulated sound field earphone includes a right ear unit, a left ear unit, a battery-containing analog sound field signal connective module and a simulated sound field selector. The right ear unit includes at least two sound generating units and the left ear unit also includes at least two sound generating units. Therefore, the sound field signal connective module can be used to select from at least two types of sound fields through the simulated sound field selector.

Abstract: An information processing apparatus that reproduces left and right audio signals based on data acquired from a sound source; acquires left and right surrounding sounds collected by left and right microphones included in a headphone unit connected to the information processing apparatus; combines a sound corresponding to at least one of the left and right surrounding sounds with at least one of the left and right audio signals; and outputs the left and right audio signals combined with the sound corresponding to the at least one of the left and right surrounding sounds to left and right earphones of the headphone unit.

Abstract: A single Airbed style earphone employing a standard three-conductor stereo headphone plug is adapted to enable the use of one earpiece to hear the combined left and right channels of stereo audio in a single ear. The single Airbed invention employs a three-conductor plug and is wired in such a way that it may be used equally well with both stereo and mono audio devices without the need for any kind of adapter, switch or sensing circuit. A pair of resistors matches the impedance load of a stereo headphone set.

Abstract: An apparatus and method for psychoacoustic balancing of sound to accommodate for asymmetrical hearing loss which may be advantageously provided as a slim, hand holdable, in-line device for use in conjunction with electronic audio equipment comprising one or more of a balance control, a master volume control for easy adjustment of sound volume for safe listening levels in conjunction with a tone control to control and/or modify bass response to customize sound for user preference and intelligibility.

Abstract: A stereo widening system and associated signal processing algorithms are described herein that can, in several embodiments, widen a stereo image with fewer processing resources than existing crosstalk cancellation systems. These system and algorithms can advantageously be implemented in a handheld device or other device with speakers placed close together, thereby improving the stereo effect produced with such devices at lower computational cost. However, the systems and algorithms described herein are not limited to handheld devices, but can more generally be implemented in any device with multiple speakers.

Abstract: A gaming unit and producing a game-audio output of a varying volume level and a chat-voice output is connected to headphones adapted to be worn by a player of the unit and connected to the gaming unit for making the chat-voice output and the game-audio output audible to the player. A circuit or software associated with the headphones can increase the chat-voice volume level generally proportionately to the game-audio volume level.

Abstract: A method of acoustically fitting a hearing aid comprises providing a plurality of audible tones, each having a predetermined frequency through stereo headphones. The tones are provided at specific sound pressure in each ear. The patient changes the relative sound pressure in each ear until a perceived direction of source of the tone is in front of the patient. The amplification or attenuation requirements of a hearing aid are modified based on the difference in the sound pressures required for the left and right ears of the patient for perceived directional sameness for each frequency band-pass channel.

Abstract: A hearing protection system with talk-through having a pair of rigid earcups enclosing a microphone, amplifier and speaker. A concha simulator, having a volume simulating that of the concha of a human ear, is acoustically coupled to the microphone, and also to the outside through an opening in the earcup. By coupling the microphone to the concha simulator, instead of directly to the outside, the acoustic response of the talk-through more accurately represents the hearing of a user.

Abstract: An electronic device may be coupled to an accessory such as a pair of earphones. The earphones may have ear presence sensor structures that determine whether or not the ears of a user are present in the vicinity of the earphones. The earphones may contain first and second speakers. When both the first and second speakers are located in the ears of the user, the electronic device may perform functions such as playing audio content. When one of the speakers has been removed from the ears of the user while the other of the speakers remains in the ears of the user, the electronic device can take actions such as pausing the playback of audio content, switching from stereo to monophonic playback, or stopping the playback of content. Suitable actions such as increasing audio drive strength may be taken when both speakers have been removed from the ears.

Abstract: A headset comprising a head band assembly including a left-side head band curved to extend from a crown end toward a temple end at a left temple region of a wearer's head; a right-side head band curved to extend from the crown end toward a temple end at a right temple region of the wearer's head; an elbow including a first end coupled to the temple end of the left-side head band or the temple end of the right-side head band, a second end opposite the first end, and a bend between the first end and the second end; an ear bud stem pivotally coupled to the second end of the elbow; and an ear bud coupled to the ear bud stem.

Abstract: An audio and video signal transmission interface apparatus includes a left sound channel interface, a right sound channel interface, a multimedia terminal interface, and a ground interface; where a first power supply and a first resistor are connected in series in the multimedia terminal interface; and the apparatus further includes a voltage detecting module, a determining module, a control module, and a second resistor connected in series in the multimedia terminal interface, where a resistance value of the second resistor is greater than an internal resistance value of an audio and video terminal and smaller than an internal resistance value of a microphone terminal in reverse connection; the determining module identifies different types of transmission lines by using a voltage value measured by the voltage detecting module; and the control module is configured to implement adaptation of different transmission lines.

Abstract: A system and method for automatically changing a state of a device coupled to a headphone device is provided. The system comprises a means for detecting if at least one earpiece of the headphone device is activated or deactivated. Based on an activation state or a change in an activation state of the at least one earpiece, a state change may occur in the device. The state change is determined by a preset of a control module.