JPS6240888B2 - - Google Patents
Info
- Publication number
- JPS6240888B2 JPS6240888B2 JP18548981A JP18548981A JPS6240888B2 JP S6240888 B2 JPS6240888 B2 JP S6240888B2 JP 18548981 A JP18548981 A JP 18548981A JP 18548981 A JP18548981 A JP 18548981A JP S6240888 B2 JPS6240888 B2 JP S6240888B2
- Authority
- JP
- Japan
- Prior art keywords
- register
- output
- value
- adpcm
- pointer
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 23
- 238000013139 quantization Methods 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 10
- 230000002123 temporal effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000005236 sound signal Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- KNMAVSAGTYIFJF-UHFFFAOYSA-N 1-[2-[(2-hydroxy-3-phenoxypropyl)amino]ethylamino]-3-phenoxypropan-2-ol;dihydrochloride Chemical compound Cl.Cl.C=1C=CC=CC=1OCC(O)CNCCNCC(O)COC1=CC=CC=C1 KNMAVSAGTYIFJF-UHFFFAOYSA-N 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
- H03M3/042—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM] with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18548981A JPS5888925A (ja) | 1981-11-20 | 1981-11-20 | Ａｄｐｃｍ再生器 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18548981A JPS5888925A (ja) | 1981-11-20 | 1981-11-20 | Ａｄｐｃｍ再生器 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5888925A JPS5888925A (ja) | 1983-05-27 |
| JPS6240888B2 true JPS6240888B2 (OSRAM) | 1987-08-31 |
Family
ID=16171661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18548981A Granted JPS5888925A (ja) | 1981-11-20 | 1981-11-20 | Ａｄｐｃｍ再生器 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5888925A (OSRAM) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0357984U (OSRAM) * | 1989-10-12 | 1991-06-05 | ||
| JPH0927576A (ja) * | 1995-07-11 | 1997-01-28 | Nec Corp | 半導体集積回路パッケージ |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6059398A (ja) * | 1983-09-13 | 1985-04-05 | 沖電気工業株式会社 | 音声合成器 |
-
1981
- 1981-11-20 JP JP18548981A patent/JPS5888925A/ja active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0357984U (OSRAM) * | 1989-10-12 | 1991-06-05 | ||
| JPH0927576A (ja) * | 1995-07-11 | 1997-01-28 | Nec Corp | 半導体集積回路パッケージ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5888925A (ja) | 1983-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0324584B1 (en) | Predictive coding device | |
| US3971987A (en) | Gain method and apparatus for a delta modulator | |
| JPS6380626A (ja) | デイジタル・アナログ変換回路 | |
| US4002981A (en) | Digital converter from delta-modulated signals into PCM signals | |
| KR950006085B1 (ko) | 부호변조장치 | |
| JPS6240888B2 (OSRAM) | ||
| US4583074A (en) | Expansion circuit for digital signals | |
| JPH04116720A (ja) | 半導体装置 | |
| JPH0795694B2 (ja) | データ圧縮回路 | |
| JPH0462617B2 (OSRAM) | ||
| EP0404535A2 (en) | Bandwidth compression device | |
| US5455783A (en) | Subsampling filter comprising two filters in succession | |
| JPH073953B2 (ja) | コード変換器 | |
| US5276708A (en) | Coding method for reducing the D.C. component in the data stream of a digital signal | |
| JPS6124850B2 (OSRAM) | ||
| JP4266257B2 (ja) | 符号化装置 | |
| JPS6124851B2 (OSRAM) | ||
| JPS5888926A (ja) | Ａｄｐｃｍ再生器 | |
| JPH04195423A (ja) | 乗算器 | |
| KR930004340B1 (ko) | 디지탈 오디오테이프 레코더의 오디오데이타 신장회로 및 방식 | |
| JPH06101709B2 (ja) | デイジタル信号伝送装置 | |
| JPH01314023A (ja) | ディジタル信号処理回路 | |
| JPS58121844A (ja) | 信号圧縮伸長器 | |
| JPS6043744A (ja) | 除算回路 | |
| JP2573746B2 (ja) | データ圧縮装置 |