A 4.8 kbps voice coding using pitch synchronous DFT
| Autor: | Shigeyuki Unagami, A. Sasama, K. Okazaki |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
business.industry
Computer science Speech recognition Speech coding Fast Fourier transform Short-time Fourier transform Spectral density Spectral density estimation Discrete Fourier transform Sub-band coding Multidimensional signal processing Sound quality business Harmonic wavelet transform Digital signal processing Constant Q transform Transform coding Data compression |
| Zdroj: | MILCOM 88, 21st Century Military Communications - What's Possible?'. Conference record. Military Communications Conference. |
| DOI: | 10.1109/milcom.1988.13368 |
| Popis: | The authors propose a 4.8-kbps voice-coding algorithm using pitch-synchronous discrete Fourier transform (DFT). This algorithm combines time-scale compression with pitch-synchronous DFT spectrum coding. It also discards the time-compressed signal-phase information and the nonharmonic spectral components to reduce the amount of information processes. Simulation results show that the reproduced sound quality is good. Processing delay is about 80 ms, without including operation time. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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