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Searching: audio signal





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Patent # Description
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...
US-9,135,921 Audio coding device and method
An audio coding device that uses a first-channel signal, a second-channel signal, and a plurality of channel prediction coefficients included in a code book,...
US-9,135,920 System for perceived enhancement and restoration of compressed audio signals
A system for processing compressed audio includes a signal enhancer module configured to generate one or more signal treatments. The one or more signal...
US-9,135,907 Method and apparatus for reducing the effect of environmental noise on listeners
A method and apparatus for enhancing a desired audio signal for delivery through an electroacoustic channel include obtaining a noise estimate attributable to...
US-9,135,672 Display system and data transmission method thereof
A display system and a data transmission method thereof are provided. When a first frame stored in a frame buffer is identical to a second frame to be output...
US-9,135,617 Card payment system
In one example embodiment, a card payment system includes a card payment apparatus, having an audio jack, configured to: read account information stored on a...
US-9,131,868 Hearing determination system, and method and program for the same
The determination system includes a presented-speech sound control section for determining a speech sound to be presented to a user; auditory/visual stimulation...
US-9,131,326 Audio signal processing
A method and apparatus for determining if there is a stream of video signals corresponding with a stream of audio signals. If the sample rate of a digital...
US-9,131,320 Audio device with a voice coil channel and a separately amplified telecoil channel
A portable audio device has a voice coil audio signal processor in which a desired audio content signal is combined with an anti-noise signal produced by an...
US-9,131,318 Method and system for providing hearing assistance to a user
A method for providing hearing assistance to a user by capturing input audio signals; estimating a speech level of the input audio signals and an ambient noise...
US-9,131,313 System and method for audio reproduction
Systems and methods of audio reproduction are described. In one embodiment, one or more processors can be configured, for example, to receive an L channel...
US-9,131,306 Apparatus including means for connecting to one or more outer speakers as well as means for detecting such a...
An audio appliance includes two external connections for connection to external loudspeakers, and includes means for establishing an electrical signal between...
US-9,131,302 Speaker temperature control using speaker temperature and speaker impedance estimates
A thermal control module computes an estimate of a temperature of a speaker, based on an audio signal that is driving the speaker, and computes a gain that is...
US-9,131,298 Constrained dynamic amplitude panning in collaborative sound systems
In general, techniques are described for performing constrained dynamic amplitude panning in collaborative sound systems. A headend device comprising one or...
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