Sine wave#

type uz_wavegen_sine_t#
float uz_wavegen_sine_sample(uz_wavegen_sine_t *self, float amplitude, float frequency_Hz)#

Outputs one sample of a sine wave. Advances the internal phase accumulator by frequency_Hz * dt since the previous call.

Parameters:

  • self – Pointer to uz_wavegen_sine instance

  • amplitude – Amplitude for the sine wave

  • frequency_Hz – Frequency for the sine wave in Hz. Only positive values are permitted

Returns:

Returns one sample for current system time

Example#

Listing 91 Example function call to sine wave generator#
1#include "uz_wavegen.h"
2int main(void) {
3   float amplitude = 8.0f;
4   float frequency_Hz = 10.0f;
5   uz_wavegen_sine_t* sine = uz_wavegen_sine_init();
6   float output = uz_wavegen_sine_sample(sine, amplitude, frequency_Hz);
7}

Description#

This function calculates a sine wave with \(y=sin(2 \pi f \cdot t)\). The phase is tracked in the wavegen instance and advanced on each sample call.

Figure made with TikZ

Fig. 339 sine wave