mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-27 23:13:01 +00:00
66 lines
3 KiB
Markdown
66 lines
3 KiB
Markdown
# samples
|
|
|
|
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 chips
|
|
|
|
as of Furnace 0.6, the following sound chips have sample support:
|
|
|
|
- NES/Ricoh 2A03 (with DPCM support and only on channel 5)
|
|
- Sega Genesis/YM2612 (channel 6 only)
|
|
- PC Engine/TurboGrafx-16/HuC6280
|
|
- Amiga/Paula
|
|
- SegaPCM
|
|
- Neo Geo/Neo Geo CD/YM2610 (ADPCM channels only)
|
|
- Seta/Allumer X1-010
|
|
- Atari Lynx
|
|
- MSM6258 and MSM6295
|
|
- YMU759/MA-2 (last channel only)
|
|
- QSound
|
|
- ZX Spectrum 48k (1-bit)
|
|
- RF5C68
|
|
- WonderSwan
|
|
- tildearrow Sound Unit
|
|
- VERA (last channel only)
|
|
- Y8950 (last channel only)
|
|
- a few more that I've forgotten to mention
|
|
|
|
## compatible sample mode
|
|
|
|
effect `17xx` enables/disables compatible sample mode whether supported (e.g. on Sega Genesis or PC Engine).
|
|
|
|
in this mode, samples are mapped to notes in an octave from C to B, allowing you to use up to 12 samples.
|
|
if you need to use more samples, you may change the sample bank using effect `EBxx`.
|
|
|
|
use of this mode is discouraged in favor of Sample type instruments.
|
|
|
|
## notes
|
|
|
|
due to limitations in some of those sound chips, some restrictions exist:
|
|
|
|
- Amiga: sample lengths and loop will be set to an even number, and your sample can't be longer than 131070.
|
|
- NES: if on DPCM mode, only a limited selection of frequencies is available, and loop position isn't supported (only entire sample).
|
|
- SegaPCM: your sample can't be longer than 65535, and the maximum frequency is 31.25KHz.
|
|
- QSound: your sample can't be longer than 65535, and the loop length shall not be greater than 32767.
|
|
- Neo Geo (ADPCM-A): no looping supported. your samples will play at ~18.5KHz.
|
|
- Neo Geo (ADPCM-B): no loop position supported (only entire sample), and the maximum frequency is ~55KHz.
|
|
- YM2608: the maximum frequency is ~55KHz.
|
|
- MSM6258/MSM6295: no arbitrary frequency.
|
|
- ZX Spectrum Beeper: your sample can't be longer than 2048, and it always plays at ~55KHz.
|
|
- Seta/Allumer X1-010: frequency resolution is terrible in the lower end. your sample can't be longer than 131072.
|
|
|
|
furthermore, many of these chips have a limited amount of sample memory. check memory usage in window > statistics.
|
|
|
|
# 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 in percentage, where 100% is the current level of the sample (note that you can distort it if you put it too high)
|
|
- the sample rate.
|
|
- what frequencies to filter, along with filter level/sweep and resonance options (much like the C64)
|
|
- and many more.
|
|
|
|
The changes you make will be applied as soon as you've committed them to your sample, but they can be undoed and redoed, just like text.
|