Quotables
"The production of too many useful things results in too many useless people."
Karl Marx
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8135588 | Transform coder and transform coding method A transform coder leading to reduction of degradation of perceptual sound quality even if an adequate number of bits is not assigned. Candidates of a correction scale factor stored in a correction scale factor codebook are outputted one by one, and an error signal i... | 03/13/2012 |
| 8121836 | Apparatus and method of processing an audio signal In one embodiment, at least one channel in a frame of the audio signal is subdivided into a plurality of blocks such that at least two of the blocks having different lengths. A length of the frame is a user defined value and is determined within a predetermined valu... | 02/21/2012 |
| 8055500 | Method, medium, and apparatus encoding/decoding audio data with extension data A method, medium, and apparatus encoding/decoding audio data in which audio data is hierarchically encoded, and at least one extension data of the audio data is encoded using at least one encoding method, and decoding is performed in the same manner, thereby ensurin... | 11/08/2011 |
| 8050915 | Apparatus and method of encoding and decoding audio signals using hierarchical block switching and linear prediction coding In one embodiment, sample information and frame length information are obtained from the audio signal. The sample information indicates a total number of audio data samples for each channel in the audio signal, and the frame length information indicates a number of ... | 11/01/2011 |
| 8041563 | Apparatus for coding a wideband audio signal and a method for coding a wideband audio signal Activity is determined for each frequency band in a frame, and when it is determined that an activity-OFF state has not continued for a predetermined number of times for preceding frames, normal coding processing is performed for the frequency band. When it is deter... | 10/18/2011 |
| 8032367 | Bit-rate converting apparatus and method thereof A bit-rate converting apparatus and a method thereof, in which bit-rate conversion is executed by low computational complexity, are provided. The bit-rate conversion is executed in a frequency domain, and psycho-acoustic analysis is not needed by using information i... | 10/04/2011 |
| 8032368 | Apparatus and method of encoding and decoding audio signals using hierarchical block swithcing and linear prediction coding In one embodiment, a channel in a frame of the audio signal is subdivided into a plurality of blocks according to a subdivision hierarchy. The subdivision hierarchy has more than one level, and each level being associated with a different block length. At least two ... | 10/04/2011 |
| 8032369 | Arbitrary average data rates for variable rate coders Methods and apparatus are provided for achieving an arbitrary average data rate for a variable rate coder. One method includes selecting a set (e.g., a pair) of initial composite rates surrounding the arbitrary average data rate. A reallocation fraction is then calc... | 10/04/2011 |
| 8005671 | Systems and methods for dynamic normalization to reduce loss in precision for low-level signals A normalization factor for a current frame of a signal may be determined. The normalization factor may depend on an amplitude of the current frame of the signal. The normalization factor may also depend on values of states after one or more operations were performed... | 08/23/2011 |
| 7983909 | Method and apparatus for encoding audio data A method for processing audio data includes determining a first common scalefactor value for representing quantized audio data in a frame. A second common scalefactor value is determined for representing the quantized audio data in the frame. A line equation common ... | 07/19/2011 |
| 7974840 | Method and apparatus for encoding/decoding MPEG-4 BSAC audio bitstream having ancillary information A method of and an apparatus for encoding/decoding an MPEG-4 bit sliced arithmetic coding (BSAC) audio bitstream having ancillary information. A time domain audio signal is converted to a frequency domain audio signal and quantized. A number of data bits is counted ... | 07/05/2011 |
| 7966175 | Fast lattice vector quantization Methods, devices, and systems for coding and decoding audio are disclosed. Digital samples of an audio signal are transformed from the time domain to the frequency domain. The resulting transform coefficients are coded with a fast lattice vector quantizer. The quant... | 06/21/2011 |
| 7930177 | Apparatus and method of encoding and decoding audio signals using hierarchical block switching and linear prediction coding 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 different lengths. The embodiment further includes obtaining informa... | 04/19/2011 |
| 7917360 | Echo avoidance in audio time stretching A transient echo can be avoided during time stretching of a digital audio signal by detecting a transient in a frame of a digital audio signal, identifying another occurrence of the transient in a subsequent frame of the digital audio signal, rotating the transient ... | 03/29/2011 |
| 7835906 | Encoding method, apparatus and device and decoding method The present invention relates to encoding technology. The encoding method includes selecting a second encoding mode for encoding an input frame signal according to an analysis on signal characteristic of the input frame signal; obtaining coding demand values for a p... | 11/16/2010 |
| 7752041 | Method and apparatus for encoding/decoding digital signal A method and an apparatus for encoding/decoding a digital signal are provided. First, a digital input signal is transformed into samples to remove redundant information among signals. Then, a lookup table corresponding to a characteristic of the input signal is sele... | 07/06/2010 |
| 7725313 | Method, system and apparatus for allocating bits in perceptual audio coders A non-iterative and computationally efficient bit allocation technique for perceptual audio coders employing uniform quantization schemes. This is achieved by computing a target MNR for all critical bands in a frame using a target bit rate and associated SMRs. Assoc... | 05/25/2010 |
| 7684980 | Information flow transmission method whereby said flow is inserted into a speech data flow, and parametric codec used to implement same For the transmission of a secondary information flow between a transmitter and a receiver, the secondary information flow is inserted at a parametric vocoder of the transmitter which generates a main information flow. The main information flow is a speech data flow ... | 03/23/2010 |
| 7636660 | Subband synthesis filtering process and apparatus A subband synthesis filtering apparatus for M sets of signals is provided. Each set of signals includes N subband sample signals. The apparatus includes a processor for processing the ith set of signals among the M sets of signals, wherein i is an integer index rang... | 12/22/2009 |
| 7634402 | Apparatus for coding of variable bitrate wideband speech and audio signals, and a method thereof An apparatus for coding of variable bitrate wideband speech and audio is described. The apparatus utilizes: a) a speech and audio divider for dividing signals inputted to a CODEC into speech or audio signals; b) a narrowband coder for performing narrowband coding, i... | 12/15/2009 |
| 7620545 | Scale factor based bit shifting in fine granularity scalability audio coding One embodiment of the present invention provides a method coding audio signals in a base layer and an enhancement layer comprising the steps of quantizing the audio signals in spectral lines into quantized data in a plurality of sub-bands in an order of most signifi... | 11/17/2009 |
| 7613609 | Apparatus and method for encoding a multi-channel signal and a program pertaining thereto To encode multi-channel digital data by adjusting the number of bits allocated to each channel to perform entropy coding of the multi-channel data, there is provided a multi-channel encoder including n encoders for audio data from n channels and an inter-channel bit... | 11/03/2009 |
| 7606705 | Speech data receiver with detection of channel-coding rate Disclosed is a system and method for channel decoding speech frames in a receiver capable of multiple (M) codec modes, wherein channel encoded speech frames include an inband bit portion and a speech portion. An inband bit decoder decodes the inband bit portion (... | 10/20/2009 |
| 7565289 | Echo avoidance in audio time stretching A transient echo can be avoided during time stretching of a digital audio signal by detecting a transient in a frame of a digital audio signal, identifying another occurrence of the transient in a subsequent frame of the digital audio signal, rotating the transient ... | 07/21/2009 |
| 7469209 | Method and apparatus for frame classification and rate determination in voice transcoders for telecommunications A method and apparatus for frame classification and rate determination in voice transcoders. The apparatus includes a classifier input parameter preparation module that unpacks the bitstream from the source codec and selects the codec parameters to be used for class... | 12/23/2008 |
| 7451080 | Controlling apparatus and method for bit rate An apparatus and a method for controlling a bit rate are provided. The apparatus and method includes a buffer for storing information as to a bit rate of a frame immediately preceding a frame to be compressed, a bit rate controller for generating a target bit rate a... | 11/11/2008 |
| 7437299 | Coding of stereo signals A method of encoding a multichannel signal, such as a stereophonic audio signal, including at least first and second signal components includes transforming at least the first and second signal components by a predetermined transformation into a principal signal inc... | 10/14/2008 |
| 7437285 | Adaptive media encoding and decoding equipment An encoding unit encodes data at a first rate during an initial predetermined section of uncompressed data (a), and encodes data at a second rate after the initial predetermined section (where the first rate | 10/14/2008 |
| 7433817 | Apparatus and method applying adaptive spectral whitening in a high-frequency reconstruction coding system The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilising high frequency reconstruction (HFR). It utilises adaptive filtering to reduce artifacts due to different tonal characteristics in different frequ... | 10/07/2008 |
| 7421376 | Comparison of data signals using characteristic electronic thumbprints A characteristic thumbprint is extracted from a data signal, the thumbprint based on statistics relating to the data signal. The data signal can be compared indirectly by matching this thumbprint against one or more reference thumbprints. The data signal may be any ... | 09/02/2008 |
| 7409338 | Softbit speech decoder and related method for performing speech loss concealment A softbit speech decoder includes a speech loss concealment circuit receiving bit information, bit error probability data, and a speech information flag from an equivalent channel based on a received signal provided to the equivalent channel. The speech loss conceal... | 08/05/2008 |
| 7406412 | Reduced computational complexity of bit allocation for perceptual coding A process that allocates bits for quantizing spectral components in a perceptual coding system is performed more efficiently by obtaining an accurate estimate of the optimal value for one or more coding parameters that are used in the bit allocation process. In one ... | 07/29/2008 |
| 7383180 | Constant bitrate media encoding techniques CBR control strategies provide constant or relatively constant bitrate output with variable quality. The control strategies include various techniques and tools, which can be used in combination or independently. For example, an audio encoder uses a trellis in two-p... | 06/03/2008 |
| 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 surfaces are isolated as a function of distance. Each reflection surface... | 05/13/2008 |
| 7373293 | Quantization noise shaping method and apparatus A method and apparatus for shaping quantization noise generated when compressing audio data at a low bit rate is disclosed. A predetermined quantization noise threshold allowed during quantization of sampled audio data and quantization noise energy information of a ... | 05/13/2008 |
| 7369989 | Unified filter bank for audio coding A unified filter bank for use in encoding and decoding MPEG-1 audio data, wherein input audio data is encoded into coded audio data and the coded audio data is subsequently decoded into output audio data. The unified filter bank includes a plurality of filters, with... | 05/06/2008 |
| 7369502 | Intelligent provisioning of DSP channels for codec changes A communication system in which a profile of codecs is loaded at the originating end. The originating end sends the profile of codecs to the terminating end and receives in return an indication of which codec to use. The originating end and the terminating end creat... | 05/06/2008 |
| 7369990 | Reducing acoustic noise in wireless and landline based telephony Acoustic noise for wireless or landline telephony is reduced through optimal filtering in which each frequency band of every time frame is filtered as a function of the estimated signal-to-noise ratio and the estimated total noise energy for the frame. Non-speech ba... | 05/06/2008 |
| RE40280 | Rate loop processor for perceptual encoder/decoder A method and apparatus for quantizing audio signals is disclosed which advantageously produces a quantized audio signal which can be encoded within an acceptable range. Advantageously, the quantizer uses a scale factor which is interpolated between a threshold based... | 04/29/2008 |
| 7363231 | Coding device, decoding device, and methods thereof A coding device capable of improving the coding efficiency and a decoding device for decoding a code sequence generated by the coding device are provided. In the coding device, for each of the possible block combinations obtained when dividing a frame, a coding unit... | 04/22/2008 |
