| 摘要 |
The invention relates to an audio signal compression method comprising the following steps:
- the audio input signal is digitized,
- the peaks of the digitized audio signal are detected,
- the time difference and the amplitude difference of two successive peaks of the audio signal are determined,
- time difference and amplitude difference of successive peaks are value coded as a data word on the basis of selectable time-per-step tables and voltage-per-step tables whereby the time-per-step tables and the voltage-per-step tables are selected depending on the absolute value of the determined time difference and amplitude difference, thus producing compressed data. An associated expansion method for the reconstruction of the original analogue signal is also disclosed. |
