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Searching: audio signal





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Patent # Description
US-9,210,509 System and method for directional sound transmission with a linear array of exponentially spaced loudspeakers
A system and method for the directional transmission of sound is disclosed. In one embodiment, the system comprises an audio source configured to generate an...
US-9,210,506 FFT bin based signal limiting
Volume extension includes limiting the magnitude of Fast Fourier Transform (FFT) frequency bins which allows increases to the perceived level of audio content...
US-9,210,505 Maintaining spatial stability utilizing common gain coefficient
In a system and method for maintaining the spatial stability of a sound field a background noise estimate may be estimated for each of a first signal and a...
US-9,210,504 Processing audio signals
In an embodiment, a method of processing audio signals at a device includes receiving audio signals at a plurality of microphones of the device; processing at...
US-9,210,503 Audio zoom
An audio equivalent of a video zoom feature for video recording and communication applications, as well as video post production processes. The audio zoom may...
US-9,210,500 Headset type detection and configuration techniques
A circuit including headset type detection provides compatibility with different transducer types, such as headphones provided by different manufacturers. An...
US-9,210,497 Electrostatic earphone
An electrostatic earphone with a closed-back housing, a sleeve for acoustically sealing to an ear canal, and an electrostatic transducer is provided. The...
US-9,210,492 Microphone assembly having an acoustic coupler
Embodiments of the invention include a microphone assembly having a microphone soldered on a bottom side of a bottom ported microphone flex circuit carrier, and...
US-9,210,491 Wireless audio coupler and amplifier for mobile phone, tablet device, MP3 player and the like
An electronic amplifier device amplifies magnetic audio signals emanating from a portable electronic device placed thereon. The electronic amplifier device...
US-9,210,483 Method and apparatus for watermarking an AC-3 encoded bit stream
For watermark embedding, without full Dolby AC-3 decoding, mantissa bits in the AC-3 bit stream are changed by exploiting the fact that during AC-3 encoding...
US-9,210,466 Systems and methods for controlling broadcast audio volume
Viewers use remote controls to generate mute signals based on broadcast programming. Those mute signals are processed into mute messages, which are sent to...
US-9,210,419 System and method for diagnostic modeling of audio and video quality of service
Systems and methods are described for determining a set of three quality metrics for audio and/or video signals transmitted through a packet network. The set of...
US-9,210,361 Video display system
The present disclosure relates to a system for multiplexing (i.e. combining multiple signals into one signal) both a plurality of video content (live and...
US-9,210,269 Active speaker indicator for conference participants
In one embodiment, a method includes receiving requests to join a conference from a plurality of user devices proximate a first endpoint. The requests include a...
US-9,210,058 Systems and methods for assessing jitter buffers
A system having one or more processors and a memory, sends a plurality of test audio packets at a level of signal complexity deviating from a model level of...
US-9,209,767 Input current limited power supply and audio power amplifier for high power reproduction of nondeterministic...
A method and apparatus for amplifying audio signals without exceeding an input current limit budgeted for the audio power amplifier circuit includes an...
US-9,209,757 Energy-efficient personal audio device output stage with signal polarity-dependent power supply update rate
A charge pump power supply may comprise a plurality of capacitors and a switching circuit for switching the capacitors to provide a first voltage or a second...
US-9,208,794 Providing sound models of an input signal using continuous and/or linear fitting
Voice enhancement and/or speech features extraction may be performed on noisy audio signals. An input signal may convey audio comprising a speech component...
US-9,208,792 Systems, methods, apparatus, and computer-readable media for noise injection
A method of processing an audio signal is described. The method includes selecting one among a plurality of entries of a codebook based on information from the...
US-9,208,790 Extraction and matching of characteristic fingerprints from audio signals
An audio fingerprint is extracted from an audio sample, where the fingerprint contains information that is characteristic of the content in the sample. The...
US-9,208,789 Reduced complexity converter SNR calculation
An audio encoder configured to encode an audio signal to generate a bitstream having E-AC-3 format, including by determining a first control parameter...
US-9,208,780 Audio signal section estimating apparatus, audio signal section estimating method, and recording medium
The processing efficiency and estimation accuracy of a voice activity detection apparatus are improved. An acoustic signal analyzer receives a digital acoustic...
US-9,208,773 Headset noise-based pulsed attenuation
A headset having a talk-through microphones incorporates an audio circuit that compresses a signal representing sounds detected by the talk-through microphones...
US-9,208,771 Ambient noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
An adaptive noise canceller adapts a secondary path modeling response using ambient noise, rather than using another noise source or source audio as a training...
US-9,208,767 Method for adaptive audio signal shaping for improved playback in a noisy environment
Provided is a method for adaptively enhancing an end-user's perceived quality, or quality of experience (QoE), of speech and other audio under ambient noise...
US-9,208,766 Computer program product for adaptive audio signal shaping for improved playback in a noisy environment
Provided is a computer program product for adaptively enhancing an end-user's perceived quality, or quality of experience (QoE), of speech and other audio under...
US-9,208,765 Audio visual presentation with three-dimensional display devices
Certain aspects of the present disclosure relate to an audio visual display device, which includes a transparent display module, a sensing module, and a...
US-9,208,487 Card transaction device and method thereof
A card transaction device is provided. And it's disposed in a smart phone, the smart phone includes a transaction processing application, and the card...
US-9,207,310 Locating apparatuses by means of audio signals using a deterministic data channel
A locating device for locating at least one apparatus which is arrangeable on board a transport unit, for example an aircraft, a locating system having such a...
US-9,204,856 Electronic stethoscope system for telemedicine applications
An electronic stethoscope includes a housing configured for hand-held manipulation, a transducer supported by the housing and configured to sense auscultation...
US-9,204,238 Electronic device and method for reproducing surround audio signal
A method for reproducing a surround audio signal using an electronic device. The electronic device first establishes connections between the electronic device...
US-9,204,234 Audio testing system and method
An audio testing system is configured for receiving an audio signal from an audio emitting device. The system samples the audio signal and obtains sampling...
US-9,204,233 Audio testing system and method
An audio testing system is configured for receiving an audio signal from the an audio emitting device. The system samples the audio signal and obtains sampling...
US-9,204,232 Method of identifying a wireless communication channel in a sound system
A method of identifies an appropriate wireless communication channel in an audio receiving device, that comprises 1) a wireless receiver receiving an audio...
US-9,204,220 RFID transceiver for remote control
A transceiver for remote control, the transceiver includes an amplifier configured to receive an audio signal from a first electronic device and amplify the...
US-9,204,217 Microphone filter system
A microphone filter system for outputting an audio signal independent of electrical impedance of downstream devices. This system may include a filter section...
US-9,204,216 Audio system of a vehicle
An audio system of a vehicle includes a mainframe, a panel computer, and a power converting circuit. The mainframe includes a power signal output terminal. The...
US-9,204,215 One-bit digital-to-analog converter offset cancellation
There is described Audio driver circuit comprising a main, 1-bit digital-to-analog converter, adapted to receive a 1-bit oversampled digital audio signal....
US-9,204,211 Pad-type device case providing enhanced audio functionality and output
A soundskin for a pad-type device comprises a housing, at least one microphone, a signal processing device, at least one audio transducer, and an acoustic...
US-9,204,119 Audio and/or video generation apparatus and method of generating audio and/or video signals
An audio and/or video generation apparatus which is arranged in operation to generate audio and/or video signals representative of an audio and/or video source,...
US-9,204,065 Removing noise generated from a non-audio component
An apparatus including at least one processor; and at least one non-transitory memory including computer program code, the at least one memory and the computer...
US-9,203,972 Efficient audio signal processing in the sub-band regime
A signal processing system enhances an audio signal. The audio signal is divided into audio sub-band signals. Some audio sub-band signals are excised. Other...
US-9,203,943 Apparatus and method for detecting time division duplex noise of communication device
A method for detecting time division duplex (TDD) noise of a communication device, the communication device includes a radio frequency (RF) unit, a voice...
US-9,203,533 System and method for real-time wireless transmission of digital audio at multiple radio frequencies
Disclosed is a system and method for the real-time wireless transmission of digital audio signals. A transmitter including a processor may be used to: generate...
US-9,203,527 Sharing a designated audio signal
A system and method for sharing a designated audio signal may reproduce the designated audio signal via transducer into an acoustic space. The designated audio...
US-9,203,454 FM receiver noise reduction
Apparatus to reduce noise in a stereo FM broadcast received via an antenna, the apparatus comprising: a frequency translator configured to translate the...
US-9,203,367 Apparatus and method for modifying an audio signal using harmonic locking
An apparatus for modifying an audio signal includes a filterbank processor, a fundamental determiner, an overtone determiner, a signal processor and a combiner....
US-9,203,365 Lightweight amplifier
Audio input tubes and power output tubes in a vacuum tube amplifier are powered and controlled by solid state controllers. The solid state controllers sample...
US-9,203,360 Audio output amplifier
An audio output amplifier includes a plurality of amplification circuits that drive a plurality of electroacoustic conversion devices, respectively. Each of the...
US-9,203,359 Amplifier and audio device provided with amplifier
Because of input of a digital signal, PWM-input, separately excited, class-D amplifier systems are less prone to be affected by noise than in the conventional...
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