seiichi horie
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。
Diff: oscsincos.h
- Revision:
- 0:058daa59980d
- Child:
- 2:fbdf03b330ae
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/oscsincos.h Sun Dec 11 21:04:06 2016 +0000
@@ -0,0 +1,55 @@
+namespace amakusa
+{
+ /**
+ * \brief Sine & Cosine Oscillator
+ */
+ class OSCSinCos
+ {
+ public:
+ /**
+ * \brief constructor
+ * \param freq Frequency in Hz.
+ * \param Fs Sampling frequency in Hz.
+ */
+ OSCSinCos( float freq, int Fs );
+ /**
+ * \brief wave generator method
+ * \param c Pointer to the buffer to output the sine signal.
+ * \param s Pointer to the buffer to output the cosine singal. If NULL, cosine signal will be skipped.
+ * \params count Number of sample to be generated.
+ */
+ void run( float *s, float *c , int count );
+ /**
+ * \brief wave generator method
+ * \param c Pointer to the buffer to output the sine signal.
+ * \params count Number of sample to be generated.
+ */
+ void run( float *s, int count ){run(s, 0, count);}
+ /**
+ * \brief set the oscillation furequncy.
+ * \param freq Frequency in Hz.
+ */
+ void setFrequency( float freq );
+ /**
+ * \brief set the oscillator's internal phase
+ * \param freq phase in radian.
+ */
+ void setPhase( float phase );
+ /**
+ * \brief get the oscillation furequncy.
+ * \returns Frequency in Hz.
+ */
+ float getFrequency();
+ /**
+ * \brief get the internal phase
+ * \returns Phase in radian
+ */
+ float getPhase();
+ private:
+ float deltaPhase; // deltaPhase per sample.
+ int sampleFreq; // in Hz
+ int phaseInSample; // internal phase [sample]
+ };
+
+}
+
\ No newline at end of file