19 Feb
2011
19 Feb
'11
8:38 p.m.
On Saturday, February 19, 2011 12:59:37 pm allcoms wrote:
I'm wondering if a straight sf2 to h2kit would
actually
be possible now. I've not been able to find any docs on
the h2kit format but through browsing the hydrogen
forums I'm now concerned that h2kits are limited to 32
instruments/samples/notes? On top of this the minimum
note number I seem to be able to trigger under composite
is MIDI note 36 (C2) so it would be a bit confusing if I
have to transpose notes in the conversion. So - Gabriel
or any of the hydrogen devs - would it be possible to
convert a piano sf2 (for example) to a h2kit without
sacrificing a number of octaves?
SF2 is a general purpose format for creating multi-sampled
instruments.
H2's drumkits are a specialized and much more limited format
for creating simple playback triggers with 1 Note == 1 Drum.
...so, converting SF2 to H2 is not a straightforward
conversion... and would require some clever logic and
assumptions about what the SF2 "is" and how they "should be"
in H2.
The drumkits in H2 are specified in an undocumented-but-
easy-to-grok XML file. (E.g. see
/usr/share/hydrogen/data/drumkits/GMkit/drumkit.xml) You
put all the audio data in WAV and FLAC files, and then use
the drumkit.xml to declare how they fit into the kit.
Probably the most advanced feature of H2's drumkit format is
called "layered samples" (or "layers" for short). It allows
the sampler to pick a different sample file based on the
incoming note velocity. I only bring this up because that
part will be harder to grok when reading the XML files.
HTH,
Gabriel