Overview

This chapter discusses new features of QuickTime audio. For information about audio support and the uses of the Sound Manager, refer to Chapter 2 of Inside Macintosh: Sound.

This chapter focuses on issues that are relevant to QuickTime. Note that Sound Manager sources are now multi-platform, so that the same manager is available on all platforms where QuickTime is available, and contains the same API and features.

This chapter also discusses how QuickTime 3 and later handles compressed audio, in addition to the two recent extensions defined for the SoundDescription sample description record. The first extension is the addition of slope, intercept, minClip , and maxClip parameters for audio. The second is the ability to store data specific to a given audio decompressor in the SoundDescription record.