JPH0123971B2 - - Google Patents
Info
- Publication number
- JPH0123971B2 JPH0123971B2 JP8349082A JP8349082A JPH0123971B2 JP H0123971 B2 JPH0123971 B2 JP H0123971B2 JP 8349082 A JP8349082 A JP 8349082A JP 8349082 A JP8349082 A JP 8349082A JP H0123971 B2 JPH0123971 B2 JP H0123971B2
- Authority
- JP
- Japan
- Prior art keywords
- quantization
- circuit
- width
- signal
- adaptive
- 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
- 238000013139 quantization Methods 0.000 claims description 261
- 230000003044 adaptive effect Effects 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 19
- 238000005070 sampling Methods 0.000 claims description 14
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 description 26
- 230000008859 change Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
- H04B14/046—Systems or methods for reducing noise or bandwidth
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8349082A JPS58200647A (ja) | 1982-05-18 | 1982-05-18 | 適応量子化及び逆量子化方法と装置 |
| AU86082/82A AU564770B2 (en) | 1981-07-17 | 1982-07-16 | Forward and inverse quantization by varying a reference step size |
| FR8212581A FR2509888B1 (fr) | 1981-07-17 | 1982-07-19 | Procede et circuit pour l'execution de quantification directe et inverse par variation d'un pas de progression de reference |
| US06/858,865 US4862173A (en) | 1981-07-17 | 1986-05-01 | Method and circuit for carrying out forward and inverse quantization by varying a reference step size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8349082A JPS58200647A (ja) | 1982-05-18 | 1982-05-18 | 適応量子化及び逆量子化方法と装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58200647A JPS58200647A (ja) | 1983-11-22 |
| JPH0123971B2 true JPH0123971B2 (enrdf_load_stackoverflow) | 1989-05-09 |
Family
ID=13803912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8349082A Granted JPS58200647A (ja) | 1981-07-17 | 1982-05-18 | 適応量子化及び逆量子化方法と装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58200647A (enrdf_load_stackoverflow) |
-
1982
- 1982-05-18 JP JP8349082A patent/JPS58200647A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58200647A (ja) | 1983-11-22 |
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