Matiq
7dcbcf49b4
- Cooley-Tukey radix-2 FFT (forward + inverse with /N normalization) - WOLA STFT/ISTFT with Hann window (nfft=2048, hop=512) - WAV16 read + WAV24 write (fixed aliasing bug in read) - Fixed in-place processing bug (separate input/output buffers) - Biquad filter (peak/shelf/reject) - Peak detector skeleton - MS encode/decode (M8 stereo) - Harness: WAV16 → STFT → WAV24 passthrough verified non-zero output Verified: burst500.wav passthrough produces output RMS=0.0678
25 lines
567 B
C++
25 lines
567 B
C++
#pragma once
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#include <cstddef>
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#include <cstdint>
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struct FFTStage {
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uint32_t radix; // 2, 4, или 8
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uint32_t group_size; // N / radix
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uint32_t groups; // количество групп
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};
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struct FFTPlan {
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uint32_t log2N;
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uint32_t N;
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uint32_t stage_count;
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FFTStage stages[16];
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uint32_t bit_reverse; // 1 если нужна бит-реверсия
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uint64_t xor_mask; // маска для XOR при бит-реверсии (DAT_181c5e4e0)
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};
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namespace fft {
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void init_plan(FFTPlan* plan, uint32_t log2N);
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}
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