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。

hysteresis.h@2:fbdf03b330ae, 2017-01-21 (annotated)

Committer:
shorie
Date:
Sat Jan 21 07:16:37 2017 +0000
Revision:
2:fbdf03b330ae
update with hysterisis

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shorie 2:fbdf03b330ae 1 #ifndef _HYSTERESIS_H_
shorie 2:fbdf03b330ae 2 #define _HYSTERESIS_H_
shorie 2:fbdf03b330ae 3
shorie 2:fbdf03b330ae 4 #include <stdint.h>
shorie 2:fbdf03b330ae 5
shorie 2:fbdf03b330ae 6 namespace amakusa
shorie 2:fbdf03b330ae 7 {
shorie 2:fbdf03b330ae 8 /**
shorie 2:fbdf03b330ae 9 * @brief Hysteresis algorithm to the descrete input value.
shorie 2:fbdf03b330ae 10 * @details
shorie 2:fbdf03b330ae 11 * To use this class, include amakusa.h
shorie 2:fbdf03b330ae 12 */
shorie 2:fbdf03b330ae 13 class Hysteresis
shorie 2:fbdf03b330ae 14 {
shorie 2:fbdf03b330ae 15 public:
shorie 2:fbdf03b330ae 16 /**
shorie 2:fbdf03b330ae 17 * @brief Constructor
shorie 2:fbdf03b330ae 18 * @param[in] min_input the Minumum input value for run() method. Must be smaller than INT32_MAX.
shorie 2:fbdf03b330ae 19 * @param[in] max_input the Maximum input value for run() method. Must be bigger than INT32_MIN.
shorie 2:fbdf03b330ae 20 */
shorie 2:fbdf03b330ae 21 Hysteresis( int32_t min_input, int32_t max_input );
shorie 2:fbdf03b330ae 22 /**
shorie 2:fbdf03b330ae 23 * @brief Run the Hysteresis algorithm
shorie 2:fbdf03b330ae 24 * @param[in] in_data A data to be applied hysteresis
shorie 2:fbdf03b330ae 25 * @returns data with hysteresis. The value range is [min_input, max_input ] of the constructor.
shorie 2:fbdf03b330ae 26 */
shorie 2:fbdf03b330ae 27 virtual int32_t run( int32_t in_data );
shorie 2:fbdf03b330ae 28 private:
shorie 2:fbdf03b330ae 29 int32_t last_value, min, max;
shorie 2:fbdf03b330ae 30 };
shorie 2:fbdf03b330ae 31
shorie 2:fbdf03b330ae 32 }
shorie 2:fbdf03b330ae 33
shorie 2:fbdf03b330ae 34
shorie 2:fbdf03b330ae 35 #endif