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SDL_SetAudioStreamFrequencyRatio(3) | SDL3 FUNCTIONS | SDL_SetAudioStreamFrequencyRatio(3) |
NAME¶
SDL_SetAudioStreamFrequencyRatio - Change the frequency ratio of an audio stream.
SYNOPSIS¶
#include <SDL3/SDL_audio.h>
bool SDL_SetAudioStreamFrequencyRatio(SDL_AudioStream *stream, float ratio);
DESCRIPTION¶
The frequency ratio is used to adjust the rate at which input data is consumed. Changing this effectively modifies the speed and pitch of the audio. A value greater than 1.0 will play the audio faster, and at a higher pitch. A value less than 1.0 will play the audio slower, and at a lower pitch.
This is applied during SDL_GetAudioStreamData, and can be continuously changed to create various effects.
FUNCTION PARAMETERS¶
RETURN VALUE¶
for more information.
THREAD SAFETY¶
It is safe to call this function from any thread, as it holds a stream-specific mutex while running.
AVAILABILITY¶
This function is available since SDL 3.2.0.
SEE ALSO¶
SDL_GetAudioStreamFrequencyRatio(3), SDL_SetAudioStreamFormat(3)
SDL 3.2.14 | Simple Directmedia Layer |