CN109690673A - 量化器与量化方法 - Google Patents
量化器与量化方法 Download PDFInfo
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- CN109690673A CN109690673A CN201780056167.1A CN201780056167A CN109690673A CN 109690673 A CN109690673 A CN 109690673A CN 201780056167 A CN201780056167 A CN 201780056167A CN 109690673 A CN109690673 A CN 109690673A
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- 238000013139 quantization Methods 0.000 title claims abstract description 257
- 238000000034 method Methods 0.000 title claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 238000005314 correlation function Methods 0.000 claims description 54
- 238000004364 calculation method Methods 0.000 claims description 53
- 238000009432 framing Methods 0.000 claims description 28
- 238000012935 Averaging Methods 0.000 claims description 6
- 230000011218 segmentation Effects 0.000 abstract description 4
- 238000011002 quantification Methods 0.000 abstract 2
- 238000007906 compression Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 12
- 238000013144 data compression Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 11
- 238000012549 training Methods 0.000 description 8
- 238000004088 simulation Methods 0.000 description 6
- 230000015654 memory Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/032—Quantisation or dequantisation of spectral components
- G10L19/035—Scalar quantisation
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- Spectroscopy & Molecular Physics (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
一种量化器与量化方法，其中，量化器包括：量化选择电路(10)和至少两个量化电路(1)；每个量化电路(1)对应一种量化方式；量化选择电路(10)的输出端(12)连接量化电路(1)的输入端(21)；量化选择电路(10)用于将第一信源数据xl的预测残差el与阈值比较，以确定el所属的分段，根据el所属的分段确定对el进行量化的目标量化方式，并将el输出至用于执行目标量化方式的目标量化电路；el为xl与xl的预测值(I)的差值，(I)为对xl进行线性预测获得的预测值；目标量化电路用于对el进行量化以获得第一量化结果ul。本方法可以充分利用信源数据之间的相关特性以及信源数据的分布规律，在获得预期的量化信噪比时，能够降低编码时所需的平均比特数，降低数据传输时所需的带宽。
Description
PCT国内申请，说明书已公开。
Claims (14)
- PCT国内申请，权利要求书已公开。
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/071981 WO2018133043A1 (zh) | 2017-01-20 | 2017-01-20 | 量化器与量化方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109690673A true CN109690673A (zh) | 2019-04-26 |
| CN109690673B CN109690673B (zh) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780056167.1A Active CN109690673B (zh) | 2017-01-20 | 2017-01-20 | 量化器与量化方法 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109690673B (zh) |
| WO (1) | WO2018133043A1 (zh) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050267744A1 (en) * | 2004-05-28 | 2005-12-01 | Nettre Benjamin F | Audio signal encoding apparatus and audio signal encoding method |
| CN105144288A (zh) * | 2013-04-05 | 2015-12-09 | 杜比国际公司 | 高级量化器 |
| CN105513602A (zh) * | 2011-04-21 | 2016-04-20 | 三星电子株式会社 | 用于语音信号或音频信号的解码设备和方法及量化设备 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100750138B1 (ko) * | 2005-11-16 | 2007-08-21 | 삼성전자주식회사 | 인간의 시각 특성을 이용한 영상의 부호화, 복호화 방법 및장치 |
| CN102243876B (zh) * | 2010-05-12 | 2013-08-07 | 华为技术有限公司 | 预测残差信号的量化编码方法及装置 |
| CN103533351B (zh) * | 2013-09-26 | 2016-08-17 | 西安空间无线电技术研究所 | 一种多量化表的图像压缩方法 |
| CN106341689B (zh) * | 2016-09-07 | 2019-04-23 | 中山大学 | 一种avs2量化模块和反量化模块的优化方法及系统 |
-
2017
- 2017-01-20 WO PCT/CN2017/071981 patent/WO2018133043A1/zh active Application Filing
- 2017-01-20 CN CN201780056167.1A patent/CN109690673B/zh active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050267744A1 (en) * | 2004-05-28 | 2005-12-01 | Nettre Benjamin F | Audio signal encoding apparatus and audio signal encoding method |
| CN105513602A (zh) * | 2011-04-21 | 2016-04-20 | 三星电子株式会社 | 用于语音信号或音频信号的解码设备和方法及量化设备 |
| CN105144288A (zh) * | 2013-04-05 | 2015-12-09 | 杜比国际公司 | 高级量化器 |
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| Publication number | Publication date |
|---|---|
| WO2018133043A1 (zh) | 2018-07-26 |
| CN109690673B (zh) | 2021-06-08 |
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