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7624022 |
Speech compression and decompression apparatuses and methods providing scalable bandwidth structure
A speech compression apparatus including: a first band-transform unit transforming a wideband speech signal to a narrowband low-band speech signal; a narrowband speech compressor compressing the...
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7624021 |
Universal container for audio data
Storing audio data encoded in any of a plurality of different audio encoding formats is enabled by parametrically defining the underlying format in which the audio data is encoded, in audio format...
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RE41009 |
Audio transmission, recording and reproducing system
An audio recording and reproducing apparatus includes a controller for controlling the entire behaviors, hard disc for write and read of audio data, audio compression/expansion circuit for...
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7620554 |
Multichannel audio extension
A method is shown for supporting a multichannel audio extension at an encoding end of a multichannel audio coding system. In order to improve the audio quality over a large frequency range, the...
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7620543 |
Method, medium, and apparatus for converting audio data
A method, medium, and apparatus for converting compressed audio data, including decoding compressed audio input data, in accordance with a corresponding compression format, coding a result of the...
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7617109 |
Method for correcting metadata affecting the playback loudness and dynamic range of audio information
A coded signal conveys encoded audio information and metadata that may be used to control the loudness and dynamic range of the audio information during its playback. If the values for these...
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7613615 |
Circuits, systems, and methods for real-time de-shuffling of shuffled audio data
A data de-shuffler includes a buffer having a set of addressable locations for storing data and control circuitry for de-shuffling a sequence of shuffled data samples. The control circuitry stores...
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7613603 |
Audio coding device with fast algorithm for determining quantization step sizes based on psycho-acoustic model
An efficient audio coding device that quantizes and encodes digital audio signals with a reduced amount of computation. A spatial transform unit subjects samples of a given audio signal to a...
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7613264 |
Flexible sampling-rate encoder
A method for implementing a flexible sampling-rate encoder, comprising the steps of (A) sampling an input signal at a regular time-interval to produce sampled data, (B) generating a pseudo-random...
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7606716 |
Systems and methods for multi-dialog surround audio
Systems and processes for transmission of multi-channel audio from a sender to one or more recipients. Multi-channel audio is encoded with a plurality of different dialog channels. The encoded...
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7606711 |
Audio signal processing device, signal recovering device, audio signal processing method and signal recovering method
The pitch extracting part generates a pitch waveform signal in a manner making the time interval of the pitch of the input audio sound data to be the same. After the number of samples in each...
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7603270 |
Method of prioritizing transmission of spectral components of audio signals
A method for the transmission of audio signals between a transmitter and at least one receiver operates according to the prioritizing pixel transmission method. The audio signal is first broken...
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7602922 |
Multi-channel encoder
There is described a multi-channel encoder ( 10; 600 ) for processing input signals conveyed in N input channels to generate corresponding output signals conveyed in M output channels together with...
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7599475 |
Method and apparatus for generic analytics
A method and apparatus for revealing business or organizational aspects of an organization in audio signals captured from interactions, broadcasts or other sources. The method and apparatus...
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7590543 |
Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks
The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels...
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7587314 |
Single-codebook vector quantization for multiple-rate applications
This invention relates to a method, a device and a software application product for N-level quantization of vectors, wherein N is selectable prior to said quantization from a set of at least two...
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7586937 |
Receiving device and method
A receiving device exhibits a high communication quality even if having a small time complexity and a small space complexity. The receiving receives a transmission unit signal sent from a sending...
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7584100 |
Method and system for clustering using generalized sentence patterns
A method and system for clustering documents based on generalized sentence patterns of the topics of the documents is provided. A generalized sentence patterns (“GSP”) system identifies a...
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7583805 |
Late reverberation-based synthesis of auditory scenes
A scheme for stereo and multi-channel synthesis of inter-channel correlation (ICC) (normalized cross-correlation) cues for parametric stereo and multi-channel coding. The scheme synthesizes ICC...
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7580843 |
Synthesis subband filter process and apparatus
A synthesis subband filter apparatus is provided. The apparatus is used for processing 18 sets of signals which each includes 32 subband sampling signals in accordance with a specification...
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7580832 |
Apparatus and method for robust classification of audio signals, and method for establishing and operating an audio-signal database, as well as computer program
An apparatus for producing a fingerprint signal from an audio signal includes a means for calculating energy values for frequency bands of segments of the audio signal which are successive in time,...
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7577570 |
Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks
The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels...
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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...
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7565298 |
Record carrier having an encoded wide-band digital audio signal recorded thereon
Reproduction accuracy of a digital signal, representing, for example, stereo audio signals, is improved by transmitting sample data which have been encoded to form transmission signals. The stereo...
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7562021 |
Modification of codewords in dictionary used for efficient coding of digital media spectral data
Coding of spectral data by representing certain portions of the spectral data as a scaled version of a code-vector, where the code-vector is chosen from either a fixed predetermined codebook or a...
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7558391 |
Compander architecture and methods
Compander architecture and method for ensuring that the components of an output signal are synchronized includes calculating a gain calculation for an input signal, detecting a predetermined...
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7555434 |
Audio decoding device, decoding method, and program
An energy corrector ( 105 ) for correcting a target energy for high-frequency components and a corrective coefficient calculator ( 106 ) for calculating an energy corrective coefficient from...
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7552048 |
Method and device for performing frame erasure concealment on higher-band signal
A method for performing a frame erasure concealment for a higher-band signal involves calculating a periodic intensity of the higher-band signal with respect to pitch period information of a...
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7548864 |
Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks
The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels...
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7548853 |
Scalable compressed audio bit stream and codec using a hierarchical filterbank and multichannel joint coding
A method for compressing audio input signals to form a master bit stream that can be scaled to form a scaled bit stream having an arbitrarily prescribed data rate. A hierarchical filterbank...
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7548852 |
Quality of decoded audio by adding noise
The present invention relates to a method of encoding and decoding an audio signal. The invention further relates to an arrangement for encoding and decoding an audio signal. The invention further...
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7548790 |
Effective deployment of temporal noise shaping (TNS) filters
In the MPEG2 Advanced Audio Coder (AAC) standard, Temporal Noise Shaping (TNS) is currently implemented by defining one filter for a given frequency band, and then switching to another filter for...
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7546237 |
Bandwidth extension of narrowband speech
A system extends the bandwidth of a narrowband speech signal into a wideband spectrum. The system includes a high-band generator that generates a high frequency spectrum based on a narrowband...
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7543212 |
Low-density parity-check (LDPC) encoder
The encoder chip of the present invention uses LDPC codes to encode input message data at a transmitting end, thereby generating a series of codewords. The encoder chip implements two low-density...
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7542896 |
Audio coding/decoding with spatial parameters and non-uniform segmentation for transients
In binaural stereo coding, only one monaural channel is encoded. An additional layer holds the parameters to retrieve the left and right signal. An encoder is disclosed which links transient...
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7539345 |
Method of processing image and audio information, image and audio processing apparatus and computer program that causes a computer to process image and audio information
A method of processing image information in which the image information is encoded by the bit plane and compressed by truncating one or more of the bit planes. Since the index parameter indexing...
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7536305 |
Mixed lossless audio compression
A mixed lossless audio compression has application to a unified lossy and lossless audio compression scheme that combines lossy and lossless audio compression within a same audio signal. The mixed...
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7536301 |
System and method for implementing real-time adaptive threshold triggering in acoustic detection systems
A system and method to generate a trigger signal based on a real-time adaptive threshold. The system may include a microphone to receive an audio signal, a device to generate a trigger signal based...
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7533022 |
Printed media with machine readable markings
A printed media, such as a card bears a visible light image, such as a picture or photograph, for viewing by a human. A machine readable array of infra-red dots is located over the visible light...
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7529941 |
System and method of retrieving a watermark within a signal
A system and method of retrieving a watermark in a watermarked signal are disclosed. The watermarked signal comprises odd and even overlapped blocks where the watermark is contained in the even...
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7521621 |
Compressed data structure and apparatus and method related thereto
Compressed waveform data structure is proposed which is suited for segmentation of a plurality of samples of compressed waveform data into a plurality of frames and subsequent storage of each of...
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7519530 |
Audio signal processing
A processor for processing an audio signal can have a receiving unit configured to receive an audio signal, an expansion unit configured to expand a bandwidth of the audio signal, and a processing...
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7519520 |
Compact signal coding method and apparatus
A compact signal coding method and apparatus including obtaining cumulative probabilities for successive quantized samples of a signal, determine the direct probability for the leading one of the...
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7516066 |
Audio coding
According to a first aspect of the invention, at least part of an audio signal is coded in order to obtain an encoded signal, the coding comprising predictive coding the at least part of the audio...
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7516064 |
Adaptive hybrid transform for signal analysis and synthesis
Analysis and synthesis filter banks such as those used in audio and video coding systems are each implemented by a hybrid transform that comprises a primary transform in cascade with one or more...
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7512539 |
Method and device for processing time-discrete audio sampled values
An integer transform, which provides integer output values, carries out the TDAC function of a MDCT in the time domain before the forward transform. In overlapping windows, this results in a Givens...
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7509254 |
Encoding device and decoding device
An encoding device ( 200 ) includes an MDCT unit ( 202 ) that transforms an input signal in a time domain into a frequency spectrum including a lower frequency spectrum, a BWE encoding unit ( 204 )...
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7505912 |
Network telephone set and audio decoding device
An audio decoding device includes a playback speed change device for changing, with respect to a decoded audio signal obtained by a decoding device, the playback speed thereof; an output buffer for...
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7505900 |
Signal encoding apparatus, signal encoding method, and program
The present invention intends to render quantization noise virtually imperceptible for a user and to prevent reduction in frequency resolution and reduction in encoding efficiency. A signal...
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7502743 |
Multi-channel audio encoding and decoding with multi-channel transform selection
An audio encoder and decoder use architectures and techniques that improve the efficiency of multi-channel audio coding and decoding. The described strategies include various techniques and tools,...
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