| 摘要 |
The invention concerns a method wherein the encoder estimates a fundamental frequency (F0) of the audio signal, and includes in an output digital flow ( PHI ) of data encoding a harmonic component of the signal, representing spectral amplitudes associated with harmonics of the fundamental frequency, and data encoding a non-harmonic component of the signal, representing spectral amplitudes associated with frequencies located in zones of the intermediate spectrum relative to the harmonics. On the basis of said data, the decoder generates, over the whole extent of the spectrum, spectral estimates of the harmonic and non-harmonic components of the signal, and combines said spectral estimates to form a global spectral estimate from which it obtains the decoded version of the audio signal. |
