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### 6.8 Sound settings

The following menu items control sound output:

- “Enable sound playback” turns sound emulation on and off.
- “Sound synchronization” specifies the method for syncronizing the sound playback. Possible settings are:
  - “Flexible”, i.e., the audio renderer flexibly adds/removes samples to the output to smoothly adapt the playback to slight changes in the speed of the emulator.
  - “Adjusting” works like “flexible”, but supports bigger differences in speed. For example, if the emulation speed drops down from from 100% to 50%, audio slows down by the same amount too.
  - “Exact”, instead, makes the audio renderer output always the same sounds you would hear from the real thing, without trying to adapt the ratio; to compensate the tolerances in speed, some extra frames will be skipped or added.
- “Sample rate” specifies the sampling frequency, ranging from 8000 to 48000 Hz (not all the sound cards and/or sound drivers can support all the frequencies, so actually the nearest candidate will be chosen).
- “Buffer size” specifies the size of the audio buffer; the bigger the buffer, the longer the delay with which sounds are played. You should pick the smallest value your machine can handle without problems.
- “Sound suspend time”, will cause the audio playback to pause for the specified number of seconds whenever some clicking happens. If “Keep going” is selected, no pausing is done.

  The following menu items control sound input:

- “Sampler Device” specifies the host device/method used for sampling/sound input, currently portaudio (if linked in) and file methods are supported.
- “Sampler Gain” specifies the amount of gain (increase the input volume if above 100 or decrease the input volume if below 100) for the input of the sampler device.
- “Sampler File” specifies the name of the file to be uses as an input source for the ’file’ method/device.

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