Unity Game Optimization - Third Edition

Resampling to lower frequencies

Resampling imported audio files to lower frequencies will reduce the file size and runtime memory footprint. This can be achieved by setting an audio file's Sample Rate Setting to Override Sample Rate, at which point we can configure the sample rate through the Sample Rate option. Some files require high sample rates to sound reasonable, such as files with high pitches and most music files; however, lower settings can reduce the file's size without noticeable quality degradation in most cases. Most use a 22,050 Hertz sampling rate for sources that involve human speech and classical music; some sound effects may be able to get away with even lower frequency values. However, each sound effect will be affected ...