The sample rate setting used within the AudioImporter. This defines the sample rate conversion of audio on import.
| PreserveSampleRate | Do not change the sample rate of the imported audio file. The sample rate will be preserved for the imported AudioClip. |
| OptimizeSampleRate | Let Unity deduce the optimal sample rate for the AudioClip being imported. The audio file will be analysed and a minimal sample rate chosen while still preserving audio quality. |
| OverrideSampleRate | Override the sample rate of the imported audio file with a custom value. |