The Third Annual Interactive
Music Conference PROJECT BAR-B-Q 1998 |
Group Report: Making Sense Of Multi-Format Audio |
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Participants: | Joe Forget; Interact Accessories |
Dave Govett; Nemesys | Bill Havlicek; Creative Labs |
Michael Land; Lucas Arts | Tony Padilla; Interact Accessories |
Keith Weiner; DiamondWare | Facilitator: Jeff Johannigman |
The "Making Sense of Multi-Format Audio" group was formed to discuss the appropriate way for the audio subsystem to handle the mixing of multiple input formats to various output formats. We have addressed this non-trivial problem and prepared the following proposal:
A QUALITY PITFALL TO AVOID: Mono 3D object ( 5.1 mix) virtualized to stereo speakers. To see why this is bad, imagine a gunshot positioned directly behind the listener. Mixed to 5.1 it would be present equally in LS and RS. If this were then virtualized there would be a separate HRTF performed on each of the two instances and the two HRT's would interfere with each other. The moral is that if the ultimate destination is stereo speakers, the main mix should be done to stereo. Users should be instructed that even if they have stereo speakers with virtual 5.1, they should still select stereo speakers as their output format. By extension, there is no role in interactive applications for virtualization within the speakers.
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Making Sense of Multi-Format Audio: Audio I/O Format Matrix
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section 6 |
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