MIC Shared Memory
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The shared-memory for the MIC(microphone) module contains the audio data. The entire shared-memory contains audio data, except for the last u32. The last u32 contains an offset within this sharedmem. This offset is likely the end-offset of the audio data written by MIC module.
The format of this audio data is mono-channel with signed PCM16. The sampling rate seems to be 16000Hz.