JPS6428700A - Voice analyzer/synthesizer - Google Patents
Voice analyzer/synthesizerInfo
- Publication number
- JPS6428700A JPS6428700A JP62184421A JP18442187A JPS6428700A JP S6428700 A JPS6428700 A JP S6428700A JP 62184421 A JP62184421 A JP 62184421A JP 18442187 A JP18442187 A JP 18442187A JP S6428700 A JPS6428700 A JP S6428700A
- Authority
- JP
- Japan
- Prior art keywords
- amplitude
- information
- average
- average amplitude
- circuit
- 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
Landscapes
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
PURPOSE: To considerablry reduce the information volume by encoding only average amplitude information of a channel signal calculated for each frame in a certain time section to send it to a synthesis part with respect to a channel component of about >=2kHz. CONSTITUTION: With respect to channels of high frequencies out of channels obtained by dividing the frequency of a voice signal into plural bands, only the frame average information is encoded. An average amplitude encoding part 14 consists of an absolute value circuit 41, an average amplitude calculator 42, an average amplitude encoder 43, etc., and a reproducing part 15 consists of an average amplitude decoder 45 and an amplitude interpolation circuit 47. An amplitude absolute value 41 is calculated from an input signal by the calculator 42 and is encoded to a logarithmic compression code by the encoder 43 and is sent to the reproducing part 15. Logarithmic expansion is performed in the decoder 45, and amplitude interpolation is performed for each sample by the circuit 47 to obtain amplitude information of each sample, and it is multiplied by the output signal of a white noise generator 48 by a means 49, and the result is outputted. Thus, the information volume is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62184421A JP2581696B2 (en) | 1987-07-23 | 1987-07-23 | Speech analysis synthesizer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62184421A JP2581696B2 (en) | 1987-07-23 | 1987-07-23 | Speech analysis synthesizer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6428700A true JPS6428700A (en) | 1989-01-31 |
JP2581696B2 JP2581696B2 (en) | 1997-02-12 |
Family
ID=16152868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62184421A Expired - Lifetime JP2581696B2 (en) | 1987-07-23 | 1987-07-23 | Speech analysis synthesizer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2581696B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002032100A (en) * | 2000-05-26 | 2002-01-31 | Lucent Technol Inc | Method for encoding audio signal |
JP2004085604A (en) * | 2002-08-22 | 2004-03-18 | Alpine Electronics Inc | Digital audio signal transmission method and audio system |
WO2004044891A1 (en) * | 2002-11-13 | 2004-05-27 | Sony Corporation | Music information encoding device and method, and music information decoding device and method |
JP2008090178A (en) * | 2006-10-04 | 2008-04-17 | Sharp Corp | Signal processing method, signal processor, and program |
JP2008522214A (en) * | 2004-11-29 | 2008-06-26 | ナショナル ユニバーシティ オブ シンガポール | Perceptually conscious low-power audio decoder for portable devices |
JP2018146652A (en) * | 2017-03-02 | 2018-09-20 | 学校法人東北学院 | Coding/decoding method of voice |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58211797A (en) * | 1982-06-04 | 1983-12-09 | 日本電気株式会社 | Band split type vocoder |
JPS59129900A (en) * | 1983-01-18 | 1984-07-26 | 日本電信電話株式会社 | Band division coding system |
JPS6027459A (en) * | 1983-07-22 | 1985-02-12 | Sumitomo Metal Ind Ltd | Device for preventing corrosion of current-conducting roll and billet |
-
1987
- 1987-07-23 JP JP62184421A patent/JP2581696B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58211797A (en) * | 1982-06-04 | 1983-12-09 | 日本電気株式会社 | Band split type vocoder |
JPS59129900A (en) * | 1983-01-18 | 1984-07-26 | 日本電信電話株式会社 | Band division coding system |
JPS6027459A (en) * | 1983-07-22 | 1985-02-12 | Sumitomo Metal Ind Ltd | Device for preventing corrosion of current-conducting roll and billet |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002032100A (en) * | 2000-05-26 | 2002-01-31 | Lucent Technol Inc | Method for encoding audio signal |
JP2004085604A (en) * | 2002-08-22 | 2004-03-18 | Alpine Electronics Inc | Digital audio signal transmission method and audio system |
WO2004044891A1 (en) * | 2002-11-13 | 2004-05-27 | Sony Corporation | Music information encoding device and method, and music information decoding device and method |
US7583804B2 (en) | 2002-11-13 | 2009-09-01 | Sony Corporation | Music information encoding/decoding device and method |
JP2008522214A (en) * | 2004-11-29 | 2008-06-26 | ナショナル ユニバーシティ オブ シンガポール | Perceptually conscious low-power audio decoder for portable devices |
JP2008090178A (en) * | 2006-10-04 | 2008-04-17 | Sharp Corp | Signal processing method, signal processor, and program |
JP2018146652A (en) * | 2017-03-02 | 2018-09-20 | 学校法人東北学院 | Coding/decoding method of voice |
Also Published As
Publication number | Publication date |
---|---|
JP2581696B2 (en) | 1997-02-12 |
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Legal Events
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EXPY | Cancellation because of completion of term | ||
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