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Searching: audio signal





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Patent # Description
US-7,724,727 Communicating calls from analog devices using voice over packet technology
Communicating a call from an analog device is disclosed. An analog interface receives analog signals from an analog device, and a receiver receives audio...
US-7,724,165 Audio codec and built-in self test method for the same
An audio codec and a BIST method adapted for the audio codec are provided. The BIST method includes the following steps. A first channel digital-to-analog...
US-7,724,082 Method and apparatus for pulse width modulation in a switching amplifier
There is provided a method and apparatus for output pulse width modulation in a digital amplifier including: a determining step of adding or subtracting a value...
US-7,721,028 Keyboard video mouse (KVM) switch between plurality of internal USB hubs each associated with plurality of...
An improved KVM switch is provided which enables computers to be connected to the KVM switch by reduced numbers of cables. It also supports transmission of...
US-7,720,677 Time warped modified transform coding of audio signals
A spectral representation of an audio signal having consecutive audio frames can be derived more efficiently, when a common time warp is estimated for any two...
US-7,720,676 Method and device for spectral reconstruction of an audio signal
An audio signal encoded in the form of data is spectrally reconstructed so part of the frequency spectrum of the audio signal is decoded with a spectral band...
US-7,720,515 Apparatus and method for reducing power consumption in a mobile unit
In a disclosed embodiment, a mobile unit includes a codec, a vocoder, and an audio decoder. The vocoder and the audio decoder provide respective outputs to an...
US-7,720,435 Multicast reception measurement system
A business model of satellite digital audio broadcasting, also referred to as multicasting, teaches computer improvements in business operations for the...
US-7,720,251 Embedded appliance for multimedia capture
A multimedia device includes input ports dedicated to receiving a real-time media signal and a processor system dedicated to capturing the real-time media...
US-7,720,249 Watermark embedder and reader
A watermark system includes an embedder, detector, and reader. The watermark embedder encodes a watermark signal in a host signal to create a combined signal....
US-7,720,241 Sound image localization apparatus and method and recording medium
A sound image localization apparatus for localizing a reproduced sound image at a sound source position convolves an impulse response through each path from an...
US-7,720,240 Audio signal processing
Systems and methods of processing audio signals are described. The audio signals comprise information about spatial position of a sound source relative to a...
US-7,720,238 Video-audio output device and video/audio method
According to one embodiment, a video/audio output method according to one embodiment includes detecting a playback volume value set in an external speaker...
US-7,720,231 Encoding audio signals
The encoder transforms the audio signals (x(n),y(n)) from the time domain to audio signal (X(k),Y(k)) in the frequency domain, and determines the ...
US-7,720,230 Individual channel shaping for BCC schemes and the like
At an audio encoder, cue codes are generated for one or more audio channels, wherein an envelope cue code is generated by characterizing a temporal envelope in...
US-7,720,229 Method for measurement of head related transfer functions
Head Related Transfer Functions (HRTFs) of an individual are measured in rapid fashion in an arrangement where a sound source is positioned in the individual's...
US-7,720,212 Spatial audio conferencing system
An audio conferencing system includes sending a signal of a sound at a sound location to a listening location. The system further includes establishing a...
US-7,720,129 Frequency-hopping carrier generator
The present invention discloses a frequency-hopping carrier generator, which comprises a current source, a ramp generator and a switch power amplifier. The...
US-7,720,113 Receiving apparatus, receiving system using same, and receiving method thereof
A receiving apparatus (100) includes demodulation parts (101, 102) for receiving the respective one of received signals of broadast systems to output demodulated...
US-7,719,616 Direct digital encoding and radio frequency modulation for broadcast television application
A digital audio encoder, digital video conditioner, and a digital modulator are described for producing a television broadcast signal at a desired channel...
US-7,719,615 Digital broadcast receiver and method for processing caption thereof
A digital cable broadcast receiver and a method for automatically processing caption data of various standards and types, is disclosed. The digital broadcast...
US-7,719,445 Method and apparatus for encoding/decoding multi-channel audio signal
Methods of encoding and decoding a multi-channel audio signal and apparatuses for encoding and decoding a multi-channel audio signal are provided. The apparatus...
US-7,719,362 Programmable-gain amplifier systems to facilitate low-noise, low-distortion volume control
Programmable-gain amplifier systems are provided that are particularly suited for reducing degrading audio effects such as zipper noise. In one embodiment, these...
US-7,717,842 Apparatus and method for generating pulsating noise in audio device
An apparatus and method for generating pulsating noise in an audio device are provided. The apparatus and method mix audio signals processed by an audio play...
US-7,716,153 Memory assistance system comprising of a signal processing server receiving a media signal and associated data...
Methods and systems for enhancing and/or improving one's memory are disclosed. In one embodiment of the invention, a computer-implemented memory assistance...
US-7,716,042 Audio coding
Coding an audio signal of a sequence of audio values into a coded signal includes determining first and second listening thresholds for first and second blocks...
US-7,715,859 Presence engine and a method of operating a presence engine for encoding or decoding availability status into a...
A system and a method are disclosed for a presence engine and a method of operating a presence engine for encoding or decoding availability status into a signal...
US-7,715,789 Method and apparatus mechanically providing and/or using modulated audio effects into the interior of human flesh
Method affecting the interior of human flesh, providing modulated power signal to at least one solenoid to create a modulated solenoid action delivered through a...
US-7,715,697 Broadcast program recording method and broadcast receiver, and information recorder for the same
A broadcast receiver includes a tuner section for receiving a broadcast program, an MPEG decoder 126 for converting a signal coming from the tuner section into a...
US-7,715,689 Broadcast receiver and system for performing copy prohibition and timed recording
A receiving system and a receiving device are provided for receiving and processing broadcast digital and analog signals such as video and audio programs. The...
US-7,715,578 Hearing aid having improved RF immunity to RF electromagnetic interference produced from a wireless...
A hearing aid has improved immunity to RF electromagnetic interference produced from wireless communications devices. A microphone receives audio signals from...
US-7,715,573 Audio bandwidth expansion
Bandwidth expansion for audio signals by frequency band translations plus adaptive gains to create higher frequencies; use of a common channel for both stereo...
US-7,715,571 Method for individually fitting a hearing instrument
A method for individually fitting a hearing instrument to a user, by: starting operation of the hearing instrument; pre-defining a desired target loudness...
US-7,715,569 Method and an apparatus for decoding an audio signal
A method for processing an audio signal, comprising: receiving a downmix signal, a first multi-channel information, and an object information; processing the...
US-7,715,566 Apparatus and method of automatically compensating a difference between audio signals of an analog broadcast...
An apparatus and a method of automatically compensating a difference between audio signals of an analog broadcast and a digital broadcast depending on a...
US-7,715,559 Crypto-synchronization for secure communication
An apparatus (213) and corresponding methods (FIG. 7) to facilitate maintaining crypto synchronization while processing communication signals in a communication...
US-7,715,446 Wireless methods and devices employing plural-bit data derived from audio information
Wireless devices and methods employ steganography for a variety of purposes. An exemplary application is a battery-powered cell phone, having, e.g., a...
US-7,715,283 Method for recording information, in particular audio signals, received via radio, in particular broadcast radio
A method for storing information, in particular audio signals, received via radio, in particular broadcast radio, the received information being written to a...
US-7,714,933 Digital broadcast receiver and method for processing caption thereof
A digital cable broadcast receiver and a method for automatically processing caption data of various standards and types, is disclosed. The digital broadcast...
US-7,714,750 Audio processing circuit and method
An audio processing circuit includes a clock synthesizer, a clock divider, a digital interpolator module, a sampling rate converter and a digital-to-analog...
US-7,714,646 Audio power amplifier and a pre-amplifier thereof
An audio power amplifier includes a pre-amplifier, an error amplifier, a comparator, a bridge circuit, and a feedback circuit, in which the gain of the...
US-7,714,222 Collaborative music creation
Methods, systems, and devices are described for collaborative handling of music contributions over a network. Embodiments of the invention provide a portal, the...
US-7,713,207 Ultrasonic apparatus and method for generating audio signals using doppler
An ultrasound system provides Doppler spectral data indicative of a monitored moving fluid. The spectral data is analyzed according to the level of power in...
US-7,712,114 Methods and apparatus to monitor audio/visual content from various sources
Methods and apparatus to monitor audio/visual content from various sources are disclosed. An example method to monitor media content provided by a selected one...
US-7,711,564 Connected audio and other media objects
The presently claimed invention relates generally to steganography and fingerprinting or hashing. In one embodiment, a method includes: obtaining a first set of...
US-7,711,557 Audio signal noise reduction device and method
An audio signal reduction device that generates a gap period in accordance with a noise generation period of noise included in an input audio signal. Noise is...
US-7,711,444 Audio input/output control apparatus and audio input/output control method
An audio input/output control apparatus, in which the speed difference between writing speed in writing audio data to a ring buffer and reading speed in reading...
US-7,711,442 Audio signal processor with modular user interface and processing functionality
Disclosed is an audio signal processor that determines the type of audio processing to be performed utilizing an audio processing device (APD) and a removable...
US-7,711,335 Digital satellite receiver and method for switching among multiple receiver antennas using diversity circuitry
A receiver for receiving and processing digital satellite radio signals includes multiple antenna modules for receiving digital satellite radio signals, multiple...
US-7,711,322 Underwater communications system and method
An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data...
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