Audio

Audio is an essential part of many experiments, whether it is to test the effect of specific audio stimuli, spatialized audio or special effects.

The audio stream from the AudioListener is automatically recorded when the AudioRecorderModule is enabled in the settings. The audio is recorded as a .wav file alongside the record file.

Warning

The audio recorder module is disabled by default in the settings. If you want to record audio, make sure to enable it before running your experiment.

Spatialized audio

The audio recorder module takes into account the audio setup of the project. As a consequence, the produced WAV file will have the same number of channels as the number of channels specified in the audio speaker mode setting (mono, stereo, quad, surroung, etc). As the audio recorder module records the samples directly from the audio listener, it is also compatible with audio FX and spatializer plugins.

Time synchronization

The audio system of Unity runs on a separated thread. As a result, the audio Digital Signal Processor (DSP) time might drift from the frame time. As a result, the audio recorder inserts silence in the WAV file when needed to re-synchronize the recorder's clock with the WAV time.

Settings

Setting	Type	Description
Enable	bool	Enable or disable the module. Disabled by default to prevent creating heavy WAV file when not required.
Log Silence Insertion	bool	When enabled, insertion of silence inside the .wav file will be logged in the Unity console.