Adding Sound > Compressing sounds for export > Using the ADPCM compression option

The ADPCM compression option sets compression for 8-bit or 16-bit sound data. Use the ADPCM setting when you are exporting short event sounds such as button clicks.

To use ADPCM compression:

1	In the Sound Properties dialog box, choose ADPCM from the Compression menu.
2	For Preprocessing, select Convert Stereo to Mono to convert mixed stereo sounds to mono (monaural). (Mono sounds are unaffected by this option.)
3	For Sample Rate, select an option to control sound fidelity and file size. Lower rates decrease file size but can also degrade sound quality. Rate options are as follows:
	5 kHz is barely acceptable for speech.
	11 kHz is the lowest recommended quality for a short segment of music and is one-quarter of the standard CD rate.
	22 kHz is a popular choice for Web playback and is half the standard CD rate.
	44 kHz is the standard CD audio rate.

Note: Flash cannot increase the kHz rate of an imported sound above the rate at which it was imported.