CA2585240A1 - Lossless coding method for waveform data - Google Patents
Lossless coding method for waveform data Download PDFInfo
- Publication number
- CA2585240A1 CA2585240A1 CA002585240A CA2585240A CA2585240A1 CA 2585240 A1 CA2585240 A1 CA 2585240A1 CA 002585240 A CA002585240 A CA 002585240A CA 2585240 A CA2585240 A CA 2585240A CA 2585240 A1 CA2585240 A1 CA 2585240A1
- Authority
- CA
- Canada
- Prior art keywords
- quantiser
- prediction filter
- sample
- value
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000007493 shaping process Methods 0.000 abstract 1
Landscapes
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
In a method of lossless processing of an integer value signal in a prediction filter which includes a quantiser, a numerator of the prediction filter is implemented prior to the quantiser and a denominator of the prediction filter is implemented recursively around the quantiser to reduce the peak data rate of an output signal. In the lossless processor, at each sample instant, an input to the quantiser is jointly responsive to a first sample value of a signal input to the prediction filter, a second sample value of a signal input to the prediction filter at a previous sample instant, and an output value of the quantiser at a previous sample incident. In a preferred embodiment, the prediction filter includes noise shaping for affecting the output of the quantiser.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9509831.5A GB9509831D0 (en) | 1995-05-15 | 1995-05-15 | Lossless coding method for waveform data |
| GB9509831.5 | 1995-05-15 | ||
| CA002218893A CA2218893C (en) | 1995-05-15 | 1996-05-15 | Lossless coding method for waveform data |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002218893A Division CA2218893C (en) | 1995-05-15 | 1996-05-15 | Lossless coding method for waveform data |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2585240A1 true CA2585240A1 (en) | 1996-11-21 |
| CA2585240C CA2585240C (en) | 2008-10-14 |
Family
ID=38227700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2585240 Expired - Lifetime CA2585240C (en) | 1995-05-15 | 1996-05-15 | Lossless coding method for waveform data |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2585240C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354340A (en) * | 2018-12-20 | 2020-06-30 | 北京嘀嘀无限科技发展有限公司 | Data annotation accuracy verification method and device, electronic equipment and storage medium |
-
1996
- 1996-05-15 CA CA 2585240 patent/CA2585240C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354340A (en) * | 2018-12-20 | 2020-06-30 | 北京嘀嘀无限科技发展有限公司 | Data annotation accuracy verification method and device, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2585240C (en) | 2008-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2218893A1 (en) | Lossless coding method for waveform data | |
| CA2005117A1 (en) | Noise reduction system | |
| CA2140779A1 (en) | Method, apparatus and recording medium for coding of separated tone and noise characteristics spectral components of an acoustic signal | |
| US4617676A (en) | Predictive communication system filtering arrangement | |
| MY121575A (en) | Method for noise reduction | |
| EP0788091A3 (en) | Speech encoding and decoding method and apparatus therefor | |
| CA2483322A1 (en) | Error masking in a variable rate vocoder | |
| CA2037044A1 (en) | Apparatus for run and string data compression | |
| CA2199070A1 (en) | Switched filterbank for use in audio signal coding | |
| CA2031006A1 (en) | Near-toll quality 4.8 kbps speech codec | |
| CA2202538A1 (en) | Time compression/expansion without pitch change | |
| MY114695A (en) | Method and apparatus for reducing noise in speech signal | |
| CA2176665A1 (en) | Method of adapting the noise masking level in an analysis-by-synthesis speech coder employing a short-term perceptual weighting filter | |
| ATE156946T1 (en) | SAMPLING FREQUENCY CONVERTER | |
| WO1998030919A3 (en) | Enhancing sensitivity in compressive receivers | |
| CA2106440A1 (en) | Method and Apparatus for Reducing Correlated Errors in Subband Coding Systems with Quantizers | |
| EP0766388A3 (en) | Method for processing signal in CSD filter and circuit suitable for the method | |
| CA2137926A1 (en) | Transmission system comprising at least a coder | |
| CA2301886A1 (en) | Reducing sparseness in coded speech signals | |
| CA2154881A1 (en) | A system and method for compression and decompression of audio signals | |
| EP0867862A3 (en) | Coding and decoding system for speech and musical sound | |
| KR0167769B1 (en) | Digital signal processing | |
| WO1994000821A3 (en) | High-speed processing apparatus and method, signal analyzing system, and measurement apparatus and method | |
| CA2585240A1 (en) | Lossless coding method for waveform data | |
| EP0771083A3 (en) | Audio coding device and audio decoding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20160516 |