seiichi horie / amakusa

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@1:0a37bce4f985, 2017-01-02 (annotated)

Committer:
shorie
Date:
Mon Jan 02 11:04:49 2017 +0000
Revision:
1:0a37bce4f985
Child:
5:3d6cf4dbf458
Wrapper classes of the mbed-dsp filter

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shorie 1:0a37bce4f985 1 #include "amakusa.h"
shorie 1:0a37bce4f985 2
shorie 1:0a37bce4f985 3 amakusa::FIRDecimator::FIRDecimator(uint16_t taps, float32_t *pCoeff, uint32_t blockSize, uint8_t m )
shorie 1:0a37bce4f985 4 : AbstractFilter( blockSize )
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 1:0a37bce4f985 11 new float32_t[taps+blockSize-1],
shorie 1:0a37bce4f985 12 blockSize);
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 1:0a37bce4f985 19 void amakusa::FIRDecimator::run( float32_t *pSrc, float32_t *pDst, uint32_t blockSize )
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 1:0a37bce4f985 25 blockSize ? blockSize : this->blockSize
shorie 1:0a37bce4f985 26 );
shorie 1:0a37bce4f985 27 }