2023-04-23 21:24:45 +08:00
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#pragma once
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#include "inttypes.h"
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2023-04-23 21:36:04 +08:00
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#define q15_t int16_t
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#define q31_t int32_t
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2023-04-23 21:24:45 +08:00
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2023-04-23 21:36:04 +08:00
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#define FFT_BIN(num, fs, size) (uint16_t)((float)(num) * (float)fs / (float)size)
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#define FFT_INDEX(freq, fs, size) (uint16_t)((float)freq / ((float)fs / (float)size))
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2023-04-23 21:24:45 +08:00
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2023-04-23 21:36:04 +08:00
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int FFT(q15_t *data, uint16_t len);
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