- open-audio #!key sampling-rate sample-format channels chunk-sizeprocedure
Opens the audio device and initialises libsdl-mixer. Needs to be called at least once. It will close and reopen the device if it has been opened before.
The defaults for the keyword arguments are:
- sampling-rate
- 44100
- sample-format
- AUDIO_S16SYS
- channels
- 2
- chunk-size
- 1024
Note: The sdl-init and mix-init procedures will be called only once.