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

A system comprising:

• a processor;
• memory coupled to the processor;
• wherein the memory includes a peak limiting module to:
• determine a position of a sample with highest magnitude within a current block of samples of a speech signal;
• determine a peak gain to be applied for the block of samples for bringing the highest magnitude to a predetermined threshold value;
• compute a gain delta by which an old gain is updated to the peak gain;
• compute a gain factor for the current block of samples based on the position of the sample with highest magnitude and the gain delta;
• set the gain factor to a predetermined minimum gain factor when the computed gain factor is less than the predetermined minimum gain factor;
• and
• apply gain to the current block of samples of the speech signal using the gain factor by the processor.

A non-transitory computer-readable storage medium for peak-limiting of a speech signal for delay sensitive voice communication, having instructions that, when executed by a computing device, cause the computing device to:

• determine a position of a sample with highest magnitude within a current block of samples of the speech signal;
• determine a peak gain to be applied for the block of samples for bringing the highest magnitude to a predetermined threshold value;
• compute a gain delta by which an old gain is updated to the peak gain;
• compute a gain factor for the current block of samples based on the position of the sample with highest magnitude and the gain delta;
• set the gain factor to a predetermined minimum gain factor when the computed gain factor is less than the predetermined minimum gain factor;
• apply gain to the current block of samples of the speech signal using the gain factor by the processor.