Ranges of the values in WAVE_DATA

ARM-software / ML-KWS-for-MCU

Keyword spotting on Arm Cortex-M Microcontrollers

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Ranges of the values in WAVE_DATA #113

Open marjanemd opened 5 years ago

marjanemd commented 5 years ago

Hello,

Since the Input to the MFCC is supposed to be with the form: Q5.2, that means we need to have the ranges as: [-32,31.75]. In the given code the WAVE_DATA is supposed to be the input to the MFCC, but it's range is [-1741,2492] ! Is there any specific reason for that? or am I missing something here? I really appreciate if I can get the answer to my question.

Thanks.

JeffyCN commented 5 years ago

That Q format is about the output of MFCC i think, wave data is just the raw data of wave file