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Atari demoscene BBS
| Re: Devpac-3 Including files Help |
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Posted by: evil
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Jun,15.2012-14:22
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If you have them 8 bits in memory, it's better to shift right AFTER addition (only one shift, better precision). Maybe ggn was speaking about having them pre-shifted in memory, ie 7 bits?
For adding channels together, pre-shifted data is a requirement to have any form of performance.
Another method is multiplex. Eg running the soundchip at 50 kHz but scale the samples to 25 kHz. Then you have the full 8-bit resolution intact and the mixloop is still quick. Before you object that it won't sound any good. Look at Protracker STe "hi speed mode" or EPSS :)
--
Anders Eriksson
ae@dhs.nu
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