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7630887 Enhancing the intelligibility of received speech in a noisy environment  
A device receives a signal that includes human-interpretable audio information. The device automatically adjusts the volume of the audio information at the received end. The volume control is...
7624008 Method and device for determining the quality of a speech signal  
Methods and devices for objectively predicting perceptual quality of speech signals degraded in a speech processing/transporting system which may have poor prediction results for degraded signals...
7624013 Word competition models in voice recognition  
A system and method relate to voice recognition software, and more particularly to voice recognition tutoring software to assist in reading development.
7620263 Anti-clipping method for image sharpness enhancement  
An image processing system provides image enhancement and anti-clipping units. The anti-clipping unit for image sharpness enhancement, operates such that any shoot artifacts in the enhanced image...
7620544 Method and apparatus for detecting speech segments in speech signal processing  
A method and apparatus for detecting speech segments of a speech signal processing device is provided. A critical band is divided into a certain number of regions according to noise frequency...
7613608 Method and circuit for noise estimation, related filter, terminal and communication network using same, and computer program product therefor  
A filter such as a Wiener filter for noise reduction in a signal, such as a speech signal, affected by background noise includes a circuit for determining values of an update function relating new...
7613607 Audio enhancement in coded domain  
Method and apparatus for enhancing a coded audio signal comprising indices which represent audio signal parameters which comprise at least a first parameter representing a first characteristic of...
7587013 Apparatus for updating gain of loop filter  
For updating a gain of a loop filter from a timing error signal, a timing signal estimator generates a current timing signal estimation value from a prior timing error estimation value, a prior...
7567898 Regulation of volume of voice in conjunction with background sound  
An audio information processing system, which when incorporated in home audio video systems, provides independent volume control capability, independent equalization setting capability and...
7565283 Method and system for controlling potentially harmful signals in a signal arranged to convey speech  
A method and system for controlling potentially harmful signals in a signal arranged to convey speech is described. The method includes the steps of establishing characteristics of the signal when...
7558729 Music detection for enhancing echo cancellation and speech coding  
A method of using music detection to enhance an operation of an echo canceller is provided, wherein the echo canceller includes an adaptive filter and a nonlinear processor. The method comprises...
7542899 Method and apparatus for adjusting the level of a speech signal in its encoded format  
A method and apparatus for modifying the level of a speech signal is provided in which the gain parameter in the encoded speech signal is changed in a variable and cyclical manner over time. More...
7539612 Coding and decoding scale factor information  
Techniques and tools for representing, coding, and decoding scale factor information are described herein. For example, during encoding of scale factors, an encoder uses one or more of flexible...
7539614 System and method for audio signal processing using different gain factors for voiced and unvoiced phonemes  
In a sound reproduction or recording system an audio signal is multiplied by a gain factor (z) which is dependent on the input level (y). The dependence of the gain factor on input level is chosen...
7539613 Device for recovering missing frequency components  
A band recovering device recovers frequency components lying in a frequency band lost due to band-limitation of a sound signal. The device includes a peak-limiting amplifier for amplifying an input...
7516065 Apparatus and method for correcting a speech signal for ambient noise in a vehicle  
A speech correction apparatus includes a speaker for generating guidance speech; a microphone set at a hearing position; an acoustic-characteristic setting unit for separating ambient noise from...
7483831 Methods and apparatus for maximizing speech intelligibility in quiet or noisy backgrounds  
Methods and apparatus for maximizing speech intelligibility use psycho-acoustic variables of a model of speech perception to control the determination of optimal frequency-band specific gain...
7469208 Method and apparatus for automatically normalizing a perceived volume level in a digitally encoded file  
Automatically normalizing a perceived loudness for a digitally encoded audio track formed of a number of channels during playback on a multimedia asset player is described. A number of auditory...
7457741 Device for transmitting speech information  
A device ( 1 ) for transmitting speech information to the human body, comprising: a microphone ( 2 ) for inputting speech from an external source; a speech signal processor ( 20 ) that...
7454330 Method and apparatus for speech encoding and decoding by sinusoidal analysis and waveform encoding with phase reproducibility  
A speech encoding method and apparatus in which an input speech signal is divided in terms of blocks or frames as encoding units and encoded in terms of the encoding units, whereby explosive and...
7454331 Controlling loudness of speech in signals that contain speech and other types of audio material  
Mechanisms are known that allow receivers to control loudness of speech in broadcast signals but these mechanisms require an estimate of speech loudness be inserted into the signal. Disclosed...
7454332 Gain constrained noise suppression  
A gain-constrained noise suppression for speech more precisely estimates noise, including during speech, to reduce musical noise artifacts introduced from noise suppression. The noise suppression...
7454328 Speech encoding system, and speech encoding method  
A speech encoding apparatus calculates encoding distortion of a noise-like fixed code vector and multiplies the encoding distortion by a fixed weight corresponding to the noise-like degree of the...
7430296 Circuit arrangement for reducing the dynamic range of audio signals  
An audio system includes a first transformation device provided with an input audio signal and which transforms the input audio signal from the time domain to the frequency domain resulting in an...
7428488 Received voice processing apparatus  
A received voice processing apparatus is provided, in which the received voice processing apparatus includes: a target spectrum calculation part for calculating, for each frequency band, a target...
7428489 Encoding method and apparatus, and decoding method and apparatus  
In a decoding apparatus ( 30 ), power compensation spectrum generation/composition units ( 37 1 to 37 4 ) adjust power of power compensation spectrums PCSP based on quantization accuracy...
7418379 Circuit for improving the intelligibility of audio signals containing speech  
The speech intelligibility of an audio signal of unchanged volume is improved by raising the total audio signal by a constant factor and lowering the amplitude of this raised signal by a high-pass...
7415117 System and method for beamforming using a microphone array  
The ability to combine multiple audio signals captured from the microphones in a microphone array is frequently used in beamforming systems. Typically, beamforming involves processing the output...
7406411 Bit error concealment methods for speech coding  
A system and method of concealing bit errors in a signal are provided. An exemplary method detects bit errors in an input signal having at least a current signal segment and a previous signal...
7398207 Methods and systems for determining audio loudness levels in programming  
An example of a method of correcting an audio level of a stored program asset comprises retrieving a stored program asset having audio encoded at a first loudness setting. Dialog of the audio of...
7392177 Method and system for reducing a voice signal noise  
A method is provided whereby, before being subjected to a low rate voice coding, an incoming digital voice signal is chronologically segmented into blocks, the blocks are broken down respectively,...
7391875 Peak-limiting mixer for multiple audio tracks  
A method for processing audio signal that includes receiving a plurality of digital audio signals and calculating signal levels of them. The next step is calculating smooth attenuation signal for...
7383175 Pitch adaptive equalization for improved audio  
A pitch adaptive circuit ( 200 ) includes an equalizer control circuit ( 206 ) that evaluates the pitch of the speech signals that are being processed and depending on the pitch information, the...
7379866 Simple noise suppression model  
An approach for efficiently reducing background noise from speech signal in real-time applications is presented. A noisy input speech signal is processed through an inverse filter when the spectrum...
7376557 Method and apparatus of overlapping and summing speech for an output that disrupts speech  
A privacy apparatus adds a privacy sound based on a speaker's own voice into the environment, thereby confusing listeners as to which of the sounds is the real source. This permits disruption of...
7373282 Fault severity check and source identification  
A fault severity check and source identification method for a frequency domain instrument accesses acquired reflection data for a transmission line under test. From the acquired data reflection...
7353169 Transient detection and modification in audio signals  
A system and method are disclosed for transient detection and modification in audio signals. Digital signal processing techniques are used to detect transients and modify an audio signal to enhance...
7349841 Noise suppression device including subband-based signal-to-noise ratio  
A noise suppression device calculates a subband SN ratio calculation based on a noise likeness signal, an input signal spectrum and a subband-based estimated noise spectrum. The device calculates a...
7343287 Method and apparatus for scalable encoding and method and apparatus for scalable decoding  
An apparatus for scalable encoding a spectrum of a signal including audio and/or video information, with the spectrum comprising binary spectral values, includes a means for generating a first...
7337111 Use of voice-to-remaining audio (VRA) in consumer applications  
Systems provide an audio/visual output to each of a plurality of listeners in a manner that permits individualized audio adjustment, wherein audio comprises a first signal that is substantially...
7319956 Method and apparatus to perform speech reference enrollment based on input speech characteristics  
A speech reference enrollment method involves requesting a user speak a word; detecting a first utterance; requesting the user speak the word; detecting a second utterance; determining a first...
7319954 Multi-channel codebook dependent compensation  
Methods and apparatus, in the context of speech recognition, for compensating in the cepstral domain for the effect of an interfering signal by using a reference signal.
7318025 Method for improving speech quality in speech transmission tasks  
A method for calculating the amplication factor, which co-determines the volume, for a speech signal transmitted in encoded form includes dividing the speech signal into short temporal signal...
7286983 System and method for processing low signal-to-noise ratio signals  
A system and method for use in a real time system and for processing a signal with a low signal-to-noise ratio (SNR). The system comprises a model for modeling an expected signal and a filter that...
7283956 Noise suppression  
A method and apparatus for noise suppression is described herein. The channel gain is controlled based on a degree of variability of the background noise. The noise variability estimate is used in...
7277550 Enhancing audio signals by nonlinear spectral operations  
A system and method are disclosed for enhancing audio signals by nonlinear spectral operations. Successive portions of the audio signal are processed using a subband filter bank. A nonlinear...
7269554 Method, apparatus, and system for efficient rate control in audio encoding  
According to one aspect of the invention, a method is provided in which audio samples representing an input audio signal are received. The input audio samples are transformed into a vector of...
7269551 Apparatus including an error detector and a limiter for decoding an adaptive differential pulse code modulation receiving signal  
An apparatus for decoding encoded voice data comprises a demodulator ( 101 ) which demodulates the encoded voice data (RF) and provides a demodulated encoded voice data (APO, RD), an adaptive...
7242783 Audio limiting circuit  
An audio limiting circuit capable of satisfying frequency dependent limits and time domain constraints, is disclosed. In one illustrative embodiment, an input node receives an unattenuated input...
7219065 Emphasis of short-duration transient speech features  
A sound processor including a microphone ( 1 ), a pre-amplifier ( 2 ), a bank of N parallel filters ( 3 ), means for detecting short-duration transitions in the envelope signal of each filter...
Matches 1 - 50 out of 206 1 2 3 4 5 >