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CCS/TLV320AIC3106: <<<TDM Mode(I2S Mode) data,,(PCM data),>>> How to convert (I2S Mode) data to "Audio Waveform data"?

SONMOOK OH
Intellectual 260 points
Part Number: TLV320AIC3106

Tool/software: Code Composer Studio

Hello, My EVM is 

TMDSOSKL137 that used TLV320AIC3106.

and, reading and writing by I2S mode.

For the Real-time sound pre-processing and recognition in ccs,

By selecting just one of the inputs for Left and another for Right (in a single-ended mode), I can have one channel from MIC and one channel from LINE IN.

the graph of the each channel(32bit 48kHz) is below( I2S mode / Mcasp) 

To get spectrogram and another digital processing in Real-time(ONLINE),

I just want audio waveform data such as 

How to convert TDM Mode(I2S Mode) data(PCM data)  to "Audio Waveform data"??

Any advice and suggestion please...

Regards,