Method and system for peak limiting of speech signals for delay sensitive voice communication

摘要

A method and system for peak limiting of speech signals for delay sensitive voice communication is disclosed. In an embodiment, a position of a sample with highest magnitude within a current block of samples is determined. Further, a peak gain to be applied for the current block of samples to bring down the highest magnitude to a predetermined threshold value is determined. Furthermore, a gain delta by which an old gain is updated to the peak gain is computed. Then, a gain factor is computed for the current block of samples based on the position of the sample with highest magnitude and the gain delta. Subsequently, the gain factor is set to a predetermined minimum gain factor when the computed gain factor is less than the predetermined minimum gain factor. In addition, gain is applied to the current block of samples using the gain factor.

主权项

1. A method for peak-limiting of a speech signal for delay sensitive voice communication comprising:
determining a position of a sample with highest magnitude within a current block of samples of the speech signal by a processor; determining a peak gain to be applied for the current block of samples to bring down the highest magnitude to a predetermined threshold value by the processor; computing a gain delta by which an old gain is updated to the peak gain by the processor; computing a gain factor for the current block of samples by the processor based on the position of the sample with highest magnitude and the gain delta; setting the gain factor to a predetermined minimum gain factor by the processor when the computed gain factor is less than the predetermined minimum gain factor; and applying gain to the current block of samples of the speech signal using the gain factor by the processor.