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Add sample documentation (WIP, needs images)

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nicco1690 2022-02-09 22:40:51 -05:00 committed by tildearrow
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papers/doc/6-sample/README.md
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# sample editor
# samples
TODO
In the context of Furnace, a sound sample (usually just referred to as a sample) is a string of numbers that hold sampled PCM audio.
In Furnace, these samples can be generated by importing a .wav (think of it as an higher quality MP3) file.
## supported systems
As of Furnace 0.5.5, the following sound chips have sample support:
- NES/Ricoh 2A03 (PCM only, no DPCM, and only on channel 5)
- Sega Genesis/YM2612 (channel 6 only; but only if there exists a `1701` effect that gets played on or before a trigger for a sample)
- PC Engine/TurboGrafx 16/Huc6280 (same conditions as above)
- Amiga/Paula (on all channels AND resamplable, but you need to make an instrument with the Amiga format and tie it to a sample first)
- Arcade/SEGA PCM (same as above but you don't need to make an instrument for it and you have to use the `20xx` effect command to resample your samples)
- Neo Geo/Neo Geo EXT-Ch2 (on the last 5 channels only and can be resampled the same way as above)
- Theoretically, the GameBoy channel 3 and the main channels of the Huc6280 can play (low quality) samples if data is given to them fast enough.
Furnace also has a feature where you can make an Amiga formarted instrument on the YM2612 and Huc6280 and resample your samples in conjunction with the `1701` effect command.
# the sample editor
You can actually tweak your samples in Furnace's sample editor, which can be accessed by clicking on `window` (at the top of the screen) then clicking on `sample editor`.
In there, you can modify certain data pertaining to your sample, such as the:
- volume of the sample (from 0% of the original to 200% of the original)
- pitch of the sample (from 1/6 of the original sample pitch to 6x the original sample pitch)
- and the sample rate of the sample (from 1KHz (1,000Hz) to 32KHz (32,000Hz)).
To apply the changes you made to a sample, just click the `apply` button at the bottom, near the preview button.