JPS54133003A - Audio analysis and synthesis unit - Google Patents
Audio analysis and synthesis unitInfo
- Publication number
- JPS54133003A JPS54133003A JP3749578A JP3749578A JPS54133003A JP S54133003 A JPS54133003 A JP S54133003A JP 3749578 A JP3749578 A JP 3749578A JP 3749578 A JP3749578 A JP 3749578A JP S54133003 A JPS54133003 A JP S54133003A
- Authority
- JP
- Japan
- Prior art keywords
- audio
- noise
- average power
- fed
- audio signal
- 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
- 230000015572 biosynthetic process Effects 0.000 title abstract 4
- 238000003786 synthesis reaction Methods 0.000 title abstract 4
- 230000005236 sound signal Effects 0.000 abstract 5
- 239000002131 composite material Substances 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
Landscapes
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
PURPOSE: To output the audio having naturality audibly, by measuring the short time average power of audio signal mixing surrounding noise and that for surrounding noise, subtracting the average power of surrounding noise from the average power of audio signal, and determining the amplitude of the excited power supply from the subtracted power.
CONSTITUTION: The audio signal from the audio signal source 205 including the noise from the noise sound source 206 is measured to measure the parameter including frequency spectrum and audio information, and the audio is synthesized from the parameter value. In such an audio analysis and synthesis unit, the input signal of the signal source 205 including noise and the noise source 206 is fed to the short time average power measuring units 211 and 215 provided with the analyser side 202, the short time average power is measured, and the measuement value of noise is subtracted from the measurement value of audio signal with the audio power 213 and it is fed to the coder 212. The output at the analyzer side 2 with this constitution is fed to the composite coder at the synthesis side 203 and the output of the composite coder 216 is fed as the exciting sound source information of the audio synthesis filter 223.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53037495A JPS5850357B2 (en) | 1978-03-30 | 1978-03-30 | Speech analysis and synthesis device |
| CA324,405A CA1123955A (en) | 1978-03-30 | 1979-03-29 | Speech analysis and synthesis apparatus |
| US06/236,428 US4360708A (en) | 1978-03-30 | 1981-02-20 | Speech processor having speech analyzer and synthesizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53037495A JPS5850357B2 (en) | 1978-03-30 | 1978-03-30 | Speech analysis and synthesis device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54133003A true JPS54133003A (en) | 1979-10-16 |
| JPS5850357B2 JPS5850357B2 (en) | 1983-11-10 |
Family
ID=12499098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53037495A Expired JPS5850357B2 (en) | 1978-03-30 | 1978-03-30 | Speech analysis and synthesis device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850357B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109075759A (en) * | 2016-04-22 | 2018-12-21 | 株式会社自动网络技术研究所 | Conducting channel with noise filter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6631389B2 (en) | 2016-04-25 | 2020-01-15 | 株式会社オートネットワーク技術研究所 | Conductive path with noise filter |
-
1978
- 1978-03-30 JP JP53037495A patent/JPS5850357B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109075759A (en) * | 2016-04-22 | 2018-12-21 | 株式会社自动网络技术研究所 | Conducting channel with noise filter |
| CN109075759B (en) * | 2016-04-22 | 2021-11-23 | 株式会社自动网络技术研究所 | Conductive circuit with noise filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5850357B2 (en) | 1983-11-10 |
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