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Searching: audio signal





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Patent # Description
US-9,147,403 Responding to a call to action contained in an audio signal
An audio signal is monitored to detect the presence of a call to action contained therein. Addressing information is automatically extracted from the call to...
US-9,147,402 Method and apparatus for detecting which one of symbols of watermark data is embedded in a received signal
Watermark symbol detection requires a detection metric for deciding at decoder side which candidate symbol is embedded inside the audio or video signal content....
US-9,147,399 Identification using audio signatures and additional characteristics
Techniques for identifying users that issue audio commands based on signatures associated with the commands and additional characteristics associated with the...
US-9,147,391 Aircraft predictive active noise cancellation
An improved user experience is provided for passengers of a transportation vessel, such as an airplane. A passenger's experience is enhanced by allowing the...
US-9,146,899 System and method of arbitrating audio source streamed by mobile applications
A system for attenuating vehicle audio for mobile application audible statements, the system comprising a vehicle computing system having one or more processors...
US-9,146,283 Battery tester
A battery tester determines a remaining level of charge of a battery mounted within a separate electronic device having an audio jack. The battery tester...
US-9,143,878 Method and system for headset with automatic source detection and volume control
An audio headset receives one or more audio signals carrying one or more audio channels and processes the audio channels to generate stereo signals for output...
US-9,143,864 Audio playback system
An audio playback system includes a handheld device and a digital stereo set. By the handheld device, a control message is converted into a modulation signal....
US-9,143,863 Apparatus, systems and methods for inaudibly identifying an audio accessory using spectral shaping
A method for identifying an accessory coupled to an electronic device. The method includes applying at least one detection pulse to the audio accessory, each...
US-9,143,862 Correlation based filter adaptation
Example apparatus and methods concern performing stereo acoustic echo cancellation using a correlation based filter adaptation control approach and without...
US-9,143,856 Apparatus and method for spatially selective sound acquisition by acoustic triangulation
An apparatus for capturing audio information from a target location includes first and second beamformers arranged in a recording environment and having first...
US-9,143,775 Method of evaluating at least one defect of quality in a data signal, associated device and computer program
Method of evaluating a defect of quality in a data signal, associated device and computer program. The method evaluates the defect of a carrier signal bearing...
US-9,143,670 Video capture system including two independent image sensors
An in-vehicle video system comprising a forward-looking video camera system that includes two independent image sensors and associated digital signal processors...
US-9,143,621 Computation saving echo canceller for a wide band audio signal
A canceller splits a signal, transmitted from a near end terminal (ET) to a far ET, into a sub-sampled signal corresponding to a higher frequency sub-band of...
US-9,143,107 System and method for dynamically mixing audio signals
A system and method for dynamically mixing audio signals may calculate a signal amplitude for each of two or more audio signals. The signal amplitude may be the...
US-9,143,105 Sigma-delta modulator approach to increased volume resolution in audio output stages
A variable gain analog amplifier is described that uses pulse-density modulation in the form of a sigma-delta modulator (SDM) to produce a gain by modulating...
US-9,143,104 Audio signal processing circuit, car audio apparatus using the same, audio component apparatus, electronic...
An audio signal processing circuit includes a first amplifier to generate a first analog audio signal; a second amplifier to generate a second analog audio...
US-9,143,095 DC-DC converter and audio output unit
A DC-DC converter includes a first capacitor which can be charged by a power-supply voltage; a second capacitor that generates the output voltage using electric...
US-9,142,221 Noise reduction
A signal processor for estimating noise power in an audio signal includes a filter unit for generating a series of power values, each power value representing...
US-9,142,220 Systems and methods for reconstructing an audio signal from transformed audio information
A system and method may be configured to reconstruct an audio signal from transformed audio information. The audio signal may be resynthesized based on...
US-9,142,215 Power-efficient voice activation
A voice activation system is provided. The voice activation system includes a first stage configured to output a first activation signal if at least one energy...
US-9,142,207 Oversight control of an adaptive noise canceler in a personal audio device
A personal audio device, such as a wireless telephone, includes an adaptive noise canceling (ANC) circuit that adaptively generates an anti-noise signal from a...
US-9,142,205 Leakage-modeling adaptive noise canceling for earspeakers
A personal audio device, such as a headphone, includes an adaptive noise canceling (ANC) circuit that adaptively generates an anti-noise signal from a reference...
US-9,142,123 Low-power and battery-free transmitter for remote control
A transmitter for remote control, the transmitter includes a first analog-to-digital converter (ADC) configured to receive a first audio signal from a...
US-9,142,119 Audio monitoring and sound identification process for remote alarms
In a computer-implemented method for remote monitoring of one or more alarms, a set of one or more audio test signals is sensed. The set of audio test signals...
US-9,142,118 Emergency notification device and system
An audio warning monitoring device, system and method including an audio detector, one or more audio screens to determine if monitored sound is an alarm, a...
US-9,141,950 Audio signaling training for bidirectional communications
Aspects of the subject disclosure provide a card reader for receiving payment card information at a mobile point-of-sale terminal. In some implementations, a...
US-9,141,187 Interactive vehicle synthesizer
A method of operating an audio entertainment system in a vehicle includes detecting an operating parameter of the vehicle. A sensor signal corresponding to the...
US-9,139,087 Method and apparatus for monitoring and control alertness of a driver
A method for monitoring the alertness of the driver of a vehicle, includes continuously detecting and evaluating at least one physical parameter of the driver...
US-9,137,619 Audio signal correction and calibration for a room environment
Disclosed are an apparatus and method of processing an audio signal to optimize audio for a room environment. One example method of operation may include...
US-9,137,618 Multi-dimensional processor and multi-dimensional audio processor system
A multi-dimensional audio processor receives as an input either a single channel signal or a two channel signal from an audio signal source; for example a...
US-9,137,613 Wireless sound transmission system and method
A system for providing sound to at least one user, having at least one audio signal source for providing audio signals; a transmission unit with a digital...
US-9,137,604 Audio processing apparatus
A pre-out terminal that outputs the audio signal is fixed. One of a surround back left audio signal SBL, a left outside audio signal LW, and a left upside audio...
US-9,137,603 Spatial audio
In summary, this application describes a psycho-acoustically motivated, parametric description of the spatial attributes of multichannel audio signals. This...
US-9,137,602 System with speaker, transceiver and related devices
A system includes a housing, a speaker included in the housing, and a first transceiver to wirelessly transmit and receive audio content and control...
US-9,137,600 System and method for dynamic residual noise shaping
A system and method for dynamic residual noise shaping configured to reduce hiss noise in an audio signal. The system and method may detect an amount and type...
US-9,137,594 Microphone unit
A microphone unit is provided which includes a microphone for picking up sound of a unit which sound is to be picked up, a clamping unit having a first end...
US-9,137,542 Audio encoding of control signals for displays
Synchronizing video content projected onto a transparent display with switching of pixels in the display. The transparent display has pixels capable of...
US-9,137,354 Portable television (TV) phone and method for controlling operation thereof
A TV phone is provided, which includes a TV module; an MRFU for demodulating an incoming call received through a forward channel, and modulating and...
US-9,136,962 Frequency characteristics control device
A frequency characteristics control device of a mixer mixes a first audio signal and a second audio signal inputted to the mixer. In the frequency ...
US-9,136,881 Audio stream mixing with dialog level normalization
A method for mixing of audio signals that allows maintaining of a consistent perceived sound level for the mixed signal by holding the sound level of the...
US-9,136,874 Method and apparatus for transmission and reception of in-band on-channel radio signals including complementary...
A method of transmitting digital information includes: receiving a plurality of information bits representing audio information and/or data; encoding the...
US-9,136,810 Audio gain control using specific-loudness-based auditory event detection
In one disclosed aspect, dynamic gain modifications are applied to an audio signal at least partly in response to auditory events and/or the degree of change in...
US-9,136,799 Amplifier using voltage variable power supply
An amplifier is capable of reducing the quantization error caused by conversion accuracy in an A/D converter circuit and, particularly, capable of improving the...
US-9,136,798 Method and apparatus for outputting audio signal
An apparatus for outputting an audio signal with improved sound quality is provided. The apparatus includes a modulation and amplification unit for pulse...
US-9,136,796 Negative audio signal voltage protection circuit and method for audio ground circuits
Self-grounded circuitry (10) includes a signal channel conducting an output voltage (V.sub.OUT1). A charge pump (2) powered by a reference voltage (V.sub.DD)...
US-9,135,954 Image tracking and substitution system and methodology for audio-visual presentations
The present invention relates to a system and method for processing a video input signal providing for tracking a selected portion in a predefined audiovisual...
US-9,135,929 Efficient content classification and loudness estimation
Efficient Context Classification and Gated Loudness Estimation The present document relates to methods and systems for encoding an audio signal. The method...
US-9,135,927 Methods and apparatus for audio processing
Systems and techniques for determining characteristics to be exhibited by a sound phrase. A user draws traces on an input device indicating characteristics,...
US-9,135,922 Method for processing audio signals, involves determining codebook index by searching for codebook...
The present invention provides a method for processing audio signals, and the method comprises the steps of: receiving input audio signals corresponding to a...
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