Abstract: A programmed data processor obtains a number of input voltage measurements for a number of speaker drivers, respectively, and a sensed shared current being a measure of current in a single power supply rail that is feeding power to each of a number of audio amplifiers while the audio amplifiers are driving the speaker drivers in accordance with a number of audio channel test signals, respectively. The programmed data processor computes an estimate of electrical input impedance of each of the speaker drivers using the input voltage measurement for the speaker driver and using the sensed shared current. Other embodiments are also described and claimed.

Abstract: Wireless headphones include left and right earphones connected by a cable. Each of the left and right earphones comprising a generally C-shaped body adapted to fit behind the user's ear, with a concave inner edge, a convex outer edge, a first end that is positioned generally adjacent the top of the user's ear and a second end positioned generally adjacent the bottom of the user's ear when the body is positioned behind the user's ear. A speaker having a sound tunnel associated therewith adapted to fit in the ear canal of the wearer; a resilient support extending forwardly and downwardly from the top end of the C-shaped body, the support normally supporting the speaker in a position which, when the C-shaped body behind the user's ear, is misaligned with the user's ear canal, but resiliently deflects to allow the sound tunnel to align with and be inserted into the user's ear canal, thereby resiliently biasing the C-shaped body against the user's head.

Abstract: Disclosed is a binaural rendering method and apparatus for decoding a multichannel audio signal. The binaural rendering method may include: extracting an early reflection component and a late reverberation component from a binaural filter; generating a stereo audio signal by performing binaural rendering of a multichannel audio signal base on the early reflection component; and applying the late reverberation component to the generated stereo audio signal.

Abstract: A personal audio device includes an adaptive noise canceling (ANC) circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone is also provided proximate the speaker to provide an error signal indicative of the effectiveness of the noise cancellation. A secondary path estimating adaptive filter is used to estimate the electro-acoustical path from the noise canceling circuit through the transducer so that source audio can be removed from the error signal. Noise is injected so that the adaptation of the secondary path estimating adaptive filter can be maintained, irrespective of the presence and amplitude of the source audio. The noise is shaped by a noise shaping filter that has a response controlled in conformity with at least one parameter of the secondary path response.

Abstract: A system and method for enhancing audio, the method including receiving audio input tracks, with at least one audio input track including a restriction parameter, determining a restricted audio input track, where the restricted audio input track is the audio input track including the restriction parameter, manipulating another audio input track based on musical properties of the restricted audio input track, and combining the restricted audio input track and the manipulated audio input track into a single output audio track.

Abstract: A feedback suppression system for reducing acoustic feedback may include a controller configured to buffer a series of incoming digital sample signals to provide a plurality of buffered signals, the incoming digital sample signal being indicative of an audio input signal that includes audio data and acoustic feedback, determine a complex spectrum of the plurality of buffered signals, determine a magnitude squared spectrum from the complex spectrum, identify at least one peak in the magnitude squared spectrum, identify a frequency of the at least one identified peak using a phase enhanced frequency estimate, and set a notch filter at the identified frequency to eliminate the acoustic feedback of the audio input signal.

Abstract: Systems, methods, and computer-readable storage media for generating an immersive three-dimensional sound space for searching audio. The system generates a three-dimensional sound space having a plurality of sound sources playing at a same time, wherein each of the plurality of sound sources is assigned a respective location in the three-dimensional sound space relative to one another, and wherein a user is assigned a current location in the three-dimensional sound space relative to each respective location. Next, the system receives input from the user to navigate to a new location in the three-dimensional sound space. Based on the input, the system then changes each respective location of the plurality of sound sources relative to the new location in the three-dimensional sound space.

Abstract: A handheld electronic device including a connection interface, a voltage supply unit and a baseband circuit is provided. When headphones are connected to the handheld electronic device, the baseband circuit can determine the type of the headphones by controlling the operation of the voltage supply unit. Furthermore, when the headphones are noise-canceling headphones, the baseband circuit can control the operation of the voltage supply unit to provide operation power to the noise-canceling headphones. In addition, corresponding noise-canceling headphones including a connection interface, at least one switch circuit, a switch control unit, a communication microphone, two speakers, a noise-canceling circuit and two noise-canceling microphones is also provided.

Abstract: An audio control system installed on an electronic device includes a switch switching between a first mode and a second mode, a switching module, a microphone, a microphone control module, a speaker, a speaker control module, a signal radiating module, and a signal receiving module. When the switch is switched to the first mode, the switching module controls the microphone control module to transmit audio data of microphone to the signal radiating module to radiate the audio data via a wireless network. When the switch is switched to the second mode, the switching module controls the microphone control module to transmit the audio data of microphone to the speaker to make sound via the speaker control module.

Abstract: A method and apparatus are provided for presenting multimedia content to a caller and/or a called party in association with a telephone call. Content may be presented pre-ring (before the called party's telephone rings), in-call, and/or post-call. Content presented to a party may be related to another party participating in the call or may be related to a third party (e.g., an advertiser that paid for the ability to have its content presented). Presented content may be actuable, to allow a caller to change the destination of a call, take advantage of an offer presented to him or her, redeem a coupon, schedule or queue a subsequent call, etc. To find a desired destination party, a caller may initiate a manual or automatic search of his or her local contacts (on his telephone) and/or a central or global directory or contact list.

Abstract: A method and system for allowing a calling party to send a voicemail message as a text message. A calling party leaves a voicemail message and that message is converted from voice to a text message. If the calling party wishes to confirm the conversion, the text message is then converted to a voicemail message. The converted voicemail message is presented to the calling party so that the calling party can review and edit the message. The calling party can review and edit any portion of the converted voicemail message. The edits of the voicemail message are applied and the voicemail message is converted to a new text message. If the calling party wishes to further review and edit the text message, it is converted to a new voicemail; otherwise the text message is sent to the called party.

Abstract: A method and apparatus are provided for presenting multimedia content to a caller and/or a called party in association with a telephone call. Content may be presented pre-ring (before the called party's telephone rings), in-call, and/or post-call. Content presented to a party may be related to another party participating in the call or may be related to a third party (e.g., an advertiser that paid for the ability to have its content presented). Presented content may be actuable, to allow a caller to change the destination of a call, take advantage of an offer presented to him or her, redeem a coupon, schedule or queue a subsequent call, etc. To find a desired destination party, a caller may initiate a manual or automatic search of his or her local contacts (on his telephone) and/or a central or global directory or contact list.

Abstract: A method and apparatus of applying user profile information to a customized application are disclosed. One example method of operation may include receiving an inquiry message or call from a user device, identifying and authorizing the user from inquiry message information received from the inquiry message, retrieving a user profile comprising at least one user preference, applying the at least one user preference to a user call processing application, and transmitting menu options to the user device based on the applied at least user preference.

Abstract: The present invention provides methods and systems for narrow bandwidth digital processing of an input audio signal. Particularly, the present invention includes a high pass filter configured to filter the input audio signal. A first compressor then modulates the filtered signal in order to create a partially processed signal. In some embodiments, a clipping module further limits the gain of the partially processed signal. A splitter is configured to split the partially processed signal into a first signal and a second signal. A low pass filter is configured to filter the first signal. A pass through module is configured to adjust the gain of the second signal. A mixer then combines the filtered first signal and the gain-adjusted second signal in order to output a combined signal. In some embodiments, a tone control module further processes the combined signal, and a second compressor further modulates the processed signal.

Abstract: Two audio samples and/or sets of audio samples are identified. The pitch distributions of the audio samples and/or sets of audio samples are identified, the pitch distribution of an audio sample or set of audio samples referring to how much of each of multiple pitches of notes is present in the audio sample or set of audio samples. Based on the pitch distributions of the audio samples and/or sets of audio samples, at least one pitch of one of the audio sample and/or set of audio samples can be automatically adjusted (but need not be, depending on the pitch distributions) to increase harmonic coherence of the audio samples and/or sets of audio samples.

Abstract: An apparatus and method for creating a personal sound zone are provided. The personal sound zone creating apparatus increases directivity in a horizontal direction by including a broadside array adapted to generate a sound beam perpendicularly to an arrangement of an array constituted by at least three transducers in a personal audio device. Also, the personal sound zone creating apparatus controls back radiation by including an end-fire array by arranging at least two arrays.

Abstract: An audio processing device is provided. The audio processing device includes a shaper. The shaper receives a digital input audio signal and generates an output audio signal at an output terminal according to the digital input audio signal. The shaper includes a gain adjustment unit and a shaping unit. The gain adjustment unit receives the digital input audio signal and adjusts the digital input audio signal to generate a gained audio signal. The shaping unit receives the gained audio signal. When the shaper operates in a first mode, the shaping unit shapes an envelope of the gained audio signal to generate a shaped audio signal, and the shaped audio signal serves as the output audio signal.

Abstract: Disclosed, in general, are devices that provide a substantially sound-tight chamber over a sound source while absorbing fields of sounds from the sound source. In general, the devices feature: an anechoic chamber that is configured to receive a sound source in a substantially sound-tight manner; and an anechoic channel that is in fluid communication with the ambient atmosphere. The anechoic chamber is adapted to capture air containing sound energy generated by the sound source, and distribute the air about an internal surface area on the inside of the chamber, wherein the internal surface area is sufficiently large to dampen or otherwise absorb the sound energy. Specifically, the secondary anechoic chamber collects air from in-between the first and second anechoic chambers around the perimeter of the mouth, in the low decibel environment away from the voice blast high decibel areas in front of the mouth.

Abstract: A headphone or earphone is provided which includes a housing with an open end and at least one defined dominant acoustic opening, an acoustically sealing earpad arranged at the open end of the housing, and at least one microphone arranged adjacent to common ear or in the vicinity of the dominant acoustical opening for detecting noise. The dominant acoustic opening is arranged within a radius of 2 cm around a midpoint of the at least one microphone. The headphone or earphone also includes an active-noise-compensation unit for performing an active noise compensation based on the output of the microphone and for generating a compensation signal. The headphone or earphone also includes an electro-acoustical transducer inside the housing for reproducing the compensation signal.

Abstract: A programmed data processor receives input voltage measurements for a number of speaker drivers, wherein each of the voltage measurements may be a sensed or estimated sequence of time-domain samples of a respective speaker driver input voltage that is over a different time frame. The processor obtains a sensed shared current, being a measure of current in a single power supply rail that is feeding power to each of a number of audio amplifiers, while the audio amplifiers are driving the speaker drivers in accordance with a number of audio channel signals, respectively. The processor computes an estimate of electrical input impedance for each of the speaker drivers using the sensed shared current and the input voltage measurements. Other embodiments are also described and claimed.