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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 8155973 | Recording and reproducing apparatus for use with optical recording medium having real-time, losslessly encoded data A lossless encoding and/or decoding apparatus which encodes audio data on a real-time basis includes a lossless compression unit which losslessly compression encodes the audio data stored in an input buffer in units of predetermined data and outputs the encoded data... | 04/10/2012 |
| 8155972 | Seamless audio speed change based on time scale modification This invention involves time-scale modification of audio signals. The invention describes overlap and add time scale modification with variable input and output buffer sizes. Seamless speed change is achieved by keeping track of previously processed data to avoid di... | 04/10/2012 |
| 8150703 | Method and apparatus for reducing access delay in discontinuous transmission packet telephony systems Systems are disclosed for operating a communications network. The system includes a module to buffer frames of a signal, and a module to determine an access delay. The system also includes a module to compress a portion of the signal based on the access delay by rem... | 04/03/2012 |
| 8150702 | Stereo audio encoding device, stereo audio decoding device, and method thereof Disclosed is a stereo audio encoding device capable of improving a spatial image of a decoded audio in stereo audio encoding. In this device, an original cross correlation calculation unit (101) calculates a mutual relationship coefficient (C1) bet... | 04/03/2012 |
| 8095375 | 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 and packet table chunks. A flag can be used to manage storage of the ... | 01/10/2012 |
| 8073704 | Conversion device A plurality of pairs of segments to be weighted/added are selected non-linearly with respect to a time axis of audio data. A speed conversion is achieved by performing the weighting/addition on the selected pairs of segments. The non-linear selection is performed by... | 12/06/2011 |
| 8069051 | Zero-gap playback using predictive mixing Circuits and methods for providing zero-gap playback of consecutive data streams in portable electronic devices, such as media players, are described. In some embodiments, a circuit includes a decoder circuit configured to receive encoded audio data and to output de... | 11/29/2011 |
| 8069052 | Quantization and inverse quantization for audio An audio encoder and decoder use architectures and techniques that improve the efficiency of quantization (e.g., weighting) and inverse quantization (e.g., inverse weighting) in audio coding and decoding. The described strategies include various techniques and tools... | 11/29/2011 |
| 8055507 | Apparatus and method for processing an audio signal using linear prediction In one embodiment, the method includes receiving an audio data frame having at least one channel. The channel is subdivided into a plurality of blocks, and at least two of the blocks are capable of having different lengths. The embodiment further includes obtaining ... | 11/08/2011 |
| 8050934 | Local pitch control based on seamless time scale modification and synchronized sampling rate conversion This invention locally controls the pitch of speech and audio signals. The invention is based on a seamless time scale modification (S-TSM) scheme connected to a synchronized sampling rate converter that switches between different time scale factors in a seamless ma... | 11/01/2011 |
| 8046236 | Apparatus and method for producing a data stream and apparatus and method for reading a data stream An entropy encoder includes an apparatus for producing a data stream which comprises two reference points, of code words of variable lengths, the apparatus comprising a first device for writing at least a part of a code word into the data stream in a first direction... | 10/25/2011 |
| 8032388 | Dynamic selection of supported audio sampling rates for playback A source sampling rate is associated with first or second groups of sampling rates. A playback rate is determined by: (a) selecting the source sampling rate if the source sampling rate is supported by a playback environment; (b) otherwise if there is a highest first... | 10/04/2011 |
| 8019615 | Method and system for decoding GSM speech data using redundancy Aspects of a method and system for decoding GSM speech data using redundancy are provided. A decoding algorithm in a frame process may be utilized to generate a bit-sequence for GSM speech data received via a burst process. The decoding algorithm may be a modified V... | 09/13/2011 |
| 8010374 | Audio coding apparatus and audio decoding apparatus An audio coding apparatus includes an audio coding unit 101 for, when it has received an audio signal input, performing coding to the audio signal input and outputting coded audio data and coding related data which is data relating to the coding, as specific ... | 08/30/2011 |
| 8000976 | Speech band extension device A speech band extension device (100), which generates an audio signal capable of realizing natural audibility after speech band extension, includes a band-extended audio generator which generates a band-extended audio signal from an original audio signal, the... | 08/16/2011 |
| 7899678 | Fast time-scale modification of digital signals using a directed search technique The time-scale of a digital signal is efficiently modified. A system suitable for embedded or stand-alone processing includes a module that can transform the time-scale of the signal according to a user's preference. An improved method for time-scale modification is... | 03/01/2011 |
| 7895046 | Low bit rate codec The present invention relates to improvements of predictive encoding/decoding operations performed on a signal which is transmitted over a packet switched network. The signal is encoded on a block by block basis in such way that a block A-B is predictive encoded ind... | 02/22/2011 |
| 7881943 | Method for speed correction of audio recordings The method adjusts the playback speed of an audio recording such that the pitch of the playback is substantially the same as the pitch at the time of the original recording. Assuming tuned instruments were used for the recording, the method alters the playback speed... | 02/01/2011 |
| 7870003 | Acoustical-signal processing apparatus, acoustical-signal processing method and computer program product for processing acoustical signals An acoustical-signal processing apparatus includes a feature extracting unit that extracts feature data common to each channel signal which forms a multichannel acoustical signal, based on a composite similarity obtained by combining similarities calculated from eac... | 01/11/2011 |
| 7840412 | Audio coding An audio encoding scheme or a stream that encodes audio and video data is disclosed. The scheme has particular application in mezzanine-level coding in digital television broadcasting. The scheme has a mean effective audio frame length F that equals the video frame ... | 11/23/2010 |
| 7801735 | Compressing and decompressing weight factors using temporal prediction for audio data An audio encoder and decoder use architectures and techniques that improve the efficiency of quantization (e.g., weighting) and inverse quantization (e.g., inverse weighting) in audio coding and decoding. The described strategies include various techniques and tools... | 09/21/2010 |
| 7792681 | Time-scale modification of data-compressed audio information A data-compressed audio waveform is temporally modified without requiring complete decompression of the audio signal. Packets of compressed audio data are first unpacked, to remove scaling that was applied in the formation of the packets. The unpacked data is then t... | 09/07/2010 |
| 7774205 | Coding of sparse digital media spectral data An audio encoder/decoder provides efficient compression of spectral transform coefficient data characterized by sparse spectral peaks. The audio encoder/decoder applies a temporal prediction of the frequency position of spectral peaks. The spectral peaks in the tran... | 08/10/2010 |
| 7756716 | Recording and reproducing apparatus for use with optical recording medium having real-time, losslessly encoded data A lossless encoding and/or decoding apparatus which encodes audio data on a real-time basis includes a lossless compression unit which losslessly compression encodes the audio data stored in an input buffer in units of predetermined data and outputs the encoded data... | 07/13/2010 |
| 7734473 | Method and apparatus for time scaling of a signal A decoder receives (501) a bitstream comprising an encoded mono signal and stereo data. A time scale processor (503) generates a time scaled mono signal. A time-to frequency processor generates frequency sample blocks of the time scaled signal, the blo... | 06/08/2010 |
| 7693722 | Simultaneous audio decoding apparatus for plural compressed audio streams An audio decoding apparatus for decoding and reproducing a plurality of compressed audio streams simultaneously without sound interruption, even when the number of samples per frame is different. The audio decoding apparatus includes: a first and second audio decode... | 04/06/2010 |
| 7689429 | Methods and apparatuses for bit stream decoding in MP3 decoder A decoding method for MP3 bit streams, which replaces a buffer required in the decoding process by manipulating the order of data decoding. The decoding method includes reading the head and side information of the current frame, and calculating a main data's start a... | 03/30/2010 |
| 7647229 | Time scaling of multi-channel audio signals A method and related apparatus comprising: buffering an encoded audio input signal comprising at least one combined signal of a plurality of audio channels and one or more corresponding sets of side information parameters describing a multi-channel sound image; chan... | 01/12/2010 |
| 7627482 | Methods, storage medium, and apparatus for encoding and decoding sound signals from multiple channels A sound signal encoder for high efficiency encoding of sound signals from a plurality of channels is provided which includes a to-be-correlated object setter (52), to-be-correlated object selector (56) and a variable-length encoder (58). The to-... | 12/01/2009 |
| 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 narrowband low-band speech signal and outputting a result of the compre... | 11/24/2009 |
| 7610205 | High quality time-scaling and pitch-scaling of audio signals In one alternative, an audio signal is analyzed using multiple psychoacoustic criteria to identify a region of the signal in which time scaling and/or pitch shifting processing would be inaudible or minimally audible, and the signal is time scaled and/or pitch shift... | 10/27/2009 |
| 7584106 | Method and apparatus for reducing access delay in discontinuous transmission packet telephony systems A system, method and computer-readable medium are disclosed for operating a communications network. The method aspect comprises receiving a signal and removing a first portion of a frame of the signal, and generating an overlap-added segment from (1) a first segment... | 09/01/2009 |
| 7526432 | Apparatus and method for producing a data stream and apparatus and method for reading a data stream An entropy encoder includes an apparatus for producing a data stream which comprises two reference points, of code words of variable lengths, the apparatus comprising a first device for writing at least a part of a code word into the data stream in a first direction... | 04/28/2009 |
| 7472069 | Apparatus for processing framed audio data for fade-in/fade-out effects An apparatus that process framed audio data to add fade-in and/or fade-out effect with low computing speed and small memory. The apparatus includes a deframer for taking an original value of a first gain parameter from an input audio frame, a first gain parameter ad... | 12/30/2008 |
| 7447640 | Acoustic signal encoding method and apparatus, acoustic signal decoding method and apparatus and recording medium In an acoustic signal encoding apparatus (100), a tonal noise verification unit (110) verifies whether the input acoustic time-domain signals are tonal or noisy. If the input acoustic time-domain signals are tonal, tonal component signals are extracted... | 11/04/2008 |
| 7447639 | System and method for error concealment in digital audio transmission A beat-pattern based error concealment system and method which detects drum-like beat patterns of music signals on the encoder side of the system and embeds the beat information as data ancillary to a preceding audio data interval in the transmitted compressed bitst... | 11/04/2008 |
| 7433824 | Entropy coding by adapting coding between level and run-length/level modes An audio encoder performs adaptive entropy encoding of audio data. For example, an audio encoder switches between variable dimension vector Huffman coding of direct levels of quantized audio data and run-level coding of run lengths and levels of quantized audio data... | 10/07/2008 |
| 7433825 | Apparatus and method for producing a data stream and apparatus and method for reading a data stream An entropy encoder includes an apparatus for producing a data stream which comprises two reference points, of code words of variable lengths, the apparatus comprising a first device for writing at least a part of a code word into the data stream in a first direction... | 10/07/2008 |
| 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 input spectrum. The system also includes a spectral processing device,... | 09/30/2008 |
| 7426470 | Energy-based nonuniform time-scale modification of audio signals A method for energy based, non-uniform time-scale compression of audio signals includes receiving a frame of data corresponding to an input audio signal and segmenting the data into a plurality of segments. The method further includes estimating a value related to e... | 09/16/2008 |
