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1993-09-10
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WELCOME TO SOUND MANAGER 3.0
The Sound Manager 3.0 software consists of
- the Sound Manager system software extension
- a new version of the Sound Control Panel
- a technical note explaining some of the new features
Available since the introduction of the Macintosh II in 1987, the Sound Manager
is Apple's digital audio software solution that allows any application to play
and record sounds using the built-in sound hardware found on Macintosh
computers.
Sound Manager 3.0 is the latest version of this software. It adds support for
16-bit CD-quality audio, redirection of sound to third-party hardware cards,
and plug-in audio compression/decompression software (codecs). It is
completely backwards compatible with previous versions of the Sound Manager.
INSTALLING SOUND MANAGER 3.0
To install Sound Manager 3.0:
1. If you received a floppy disk labeled "Sound Manager", insert it into your
computer and open it. If you downloaded Sound Manager 3.0 electronically, make
sure the Sound Manager files you downloaded are visible.
2. Drag the Sound Manager and Sound control panel icons from the Sound Manager
disk onto your System Folder icon (not into the open folder).
3. Click OK in the dialog box that appears.
4. Restart your Macintosh.
NEW FEATURES OF SOUND MANAGER 3.0
Ñ Support for 16-bit audio samples
Previous versions of the Sound Manager could only support stereo 8-bit audio
samples with sample rates up to 22 kHz. Sound Manager 3.0 removes this
limitation by allowing stereo 16-bit audio samples with sample rates up to 65
kHz, providing CD-quality audio in QuickTime movies and other audio
applications. Sound Manager 3.0 will also automatically convert 16-bit sounds
into 8-bit sounds on Apple personal computers that do not have 16-bit audio
hardware.
Ñ Support for third-party audio hardware
Third-party sound cards can be installed in your Macintosh to allow playback
and recording of CD-quality audio. Sound Manager 3.0 makes this possible by
providing a driver mechanism and a new Sound control panel that allows the user
to redirect sound to any available audio device. Audio card developers can
license the Sound Manager 3.0 extension and bundle it for distribution with
their product.
ÑSupport for plug-in audio codecs
The Sound Manager previously supported only MACE audio compression at ratios of
3:1 and 6:1. Sound Manager 3.0 goes beyond MACE to support any compressed audio
format with the use of plug-in audio compression/decompression software
(codecs). These are simply extension files placed in the System Folder that the
Sound Manager recognizes and uses when it needs to play a compressed sound. In
this way, applications can play compressed sounds seamlessly without being
aware of the compressed format.
Ñ Better performance and quality
Sound Manager 3.0 is much faster --in many cases 2-3 times more efficient than
previous versions. This means that your application can do more while sound is
playing. Sound Manager 3.0 is also more robust: many bugs have been fixed and a
number of commonly requested features have been added. Refer to the Technical
Note for more information.
⌐1993 Apple Computer, Inc. Apple, the Apple logo, and Macintosh are trademarks
of Apple Computer, Inc., registered in the U.S. and other countries. QuickTime
is a trademark of Apple Computer, Inc.