Gain control of audio data using hardware accelerators

A system comprising:

• a processor;
• a microphone configured to produce an audio signal;
• a multiplexer having a first input, a second input, and an output, the first input coupled to the microphone, the multiplexer configured to select to output audio samples from the microphone at the output;
• and
• a gain control circuit coupled to the processor, and to the output of the multiplexer, the gain control circuit configured to produce sample metrics based on the audio samples;
• and
• wherein the processor is configured to produce gain parameters based on the audio samples and the sample metrics.

A method comprising:

• selecting either analog input or digital input as an audio input;
• sampling the audio input to produce audio samples;
• determining, based on the samples, a sample metric;
• and
• outputting the sample metric.