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Mac OS Sound

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New Sound Manager Features

This chapter discusses new features of the Sound Manager that are available since the release of Sound Manager 3.0, including Sound Manager releases 3.1, 3.2.1, and 3.3. You need to read this chapter if you are writing an application and want to add sound to it.

This chapter expands on the release notes that accompanied the Sound Manager 3.3 software. For example, Sound Manager 3.3 now supports scheduling of sounds, both in the past and in the future. In addition, Sound Manager sources are now multi-platform, which means that the same manager is available for each platform, i.e., Mac OS, Windows 95 and NT, and contains the same API and features.

Notably, in Sound Manager 3.3, the contents of both SoundInput.h and SoundComponents.h interface files have been merged into a single Sound.h file.

Read this chapter if you want to use the Sound Manager to

• determine the currently installed version
• convert between sound formats using the SoundConverterOpen function
• use the sound conversion architecture to convert a buffer of silence to IMA 4:1, changing the sampling rate in the process.

These are described in the section "Using the Sound Manager" .

Later sections explain the new sound commands, sound informational selectors and Sound Manager routines added since the release of Sound Manager 3.0.