Basic Audio Signal Processing Library
Dependents: unzen_sample_nucleo_f746 skeleton_unzen_nucleo_f746 ifmag_noise_canceller synthesizer_f746
オーディオ信号処理用のライブラリです。
mbed-dspのフィルタ群向けに作ったクラス・ラッパーのほか、以下のクラスを用意しています。
- ヒステリシス
- sin/cosオシレータ
- リミッター
クラスは全て名前空間amakusaに含まれます。
firdecimator.cpp@5:3d6cf4dbf458, 2017-02-10 (annotated)
- Committer:
- shorie
- Date:
- Fri Feb 10 13:24:30 2017 +0000
- Revision:
- 5:3d6cf4dbf458
- Parent:
- 1:0a37bce4f985
amakusa::AbstractFilter::run() ???blockSize ??????
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
shorie | 1:0a37bce4f985 | 1 | #include "amakusa.h" |
shorie | 1:0a37bce4f985 | 2 | |
shorie | 5:3d6cf4dbf458 | 3 | amakusa::FIRDecimator::FIRDecimator(uint16_t taps, float32_t *pCoeff, uint32_t block_size, uint8_t m ) |
shorie | 5:3d6cf4dbf458 | 4 | : AbstractFilter( block_size ) |
shorie | 1:0a37bce4f985 | 5 | { |
shorie | 1:0a37bce4f985 | 6 | arm_fir_decimate_init_f32( |
shorie | 1:0a37bce4f985 | 7 | &(this->state), |
shorie | 1:0a37bce4f985 | 8 | taps, |
shorie | 1:0a37bce4f985 | 9 | m, |
shorie | 1:0a37bce4f985 | 10 | pCoeff, |
shorie | 5:3d6cf4dbf458 | 11 | new float32_t[taps+block_size-1], |
shorie | 5:3d6cf4dbf458 | 12 | block_size); |
shorie | 1:0a37bce4f985 | 13 | } |
shorie | 1:0a37bce4f985 | 14 | |
shorie | 1:0a37bce4f985 | 15 | amakusa::FIRDecimator::~FIRDecimator() |
shorie | 1:0a37bce4f985 | 16 | { |
shorie | 1:0a37bce4f985 | 17 | delete [] this->state.pState; |
shorie | 1:0a37bce4f985 | 18 | } |
shorie | 5:3d6cf4dbf458 | 19 | void amakusa::FIRDecimator::run( float32_t *pSrc, float32_t *pDst ) |
shorie | 1:0a37bce4f985 | 20 | { |
shorie | 1:0a37bce4f985 | 21 | arm_fir_decimate_f32( |
shorie | 1:0a37bce4f985 | 22 | & this->state, |
shorie | 1:0a37bce4f985 | 23 | pSrc, |
shorie | 1:0a37bce4f985 | 24 | pDst, |
shorie | 5:3d6cf4dbf458 | 25 | this->block_size |
shorie | 1:0a37bce4f985 | 26 | ); |
shorie | 1:0a37bce4f985 | 27 | } |