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OBD:SNDD: Difference between revisions
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→.raw part (MS ADPCM, PC demo): minor correction. Heading towards a complete rewrite of this thing.
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====.raw part (MS ADPCM, PC demo)==== | ====.raw part (MS ADPCM, PC demo)==== | ||
For PC demo the .raw SNDD data is actually the same as for PC retail, but with the same short .dat header as on Mac. The ADPCM block size is 512 bytes for mono, and 1024 for stereo. The sample rate is 22.05 kHz. | For PC demo the .raw SNDD data is actually the same as for PC retail, but with the same short .dat header as on Mac. The ADPCM block size is 512 bytes for mono, and 1024 for stereo. The sample rate is 22.05 kHz. | ||
:(Note, however, that the "electric" SNDDs are sampled at 44.1 kHz in PC retail, with 1024 bytes per block even though it's mono. Therefore, for these sounds, the .raw data ''is'' different on PC retail and PC demo.) | |||
====.raw part (IMA4 ADPCM, Mac)==== | ====.raw part (IMA4 ADPCM, Mac)==== | ||
For an overview of the IMA ADPCM algorithm and IMA4 header (if interested), see [https://wiki.multimedia.cx/index.php/Apple_QuickTime_IMA_ADPCM HERE] | For an overview of the IMA ADPCM algorithm and IMA4 header (if interested), see [https://wiki.multimedia.cx/index.php/Apple_QuickTime_IMA_ADPCM HERE] | ||