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Re: kAudioUnitSubType_DLSSynth and support for SoundFont 2.0.1 features
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Re: kAudioUnitSubType_DLSSynth and support for SoundFont 2.0.1 features


  • Subject: Re: kAudioUnitSubType_DLSSynth and support for SoundFont 2.0.1 features
  • From: "email@hidden" <email@hidden>
  • Date: Sat, 24 Nov 2018 08:18:44 -0800

Hi George!

kAudioUnitSubType_DLSSynth is very old and has never been supported in iOS.
You will want to use kAudioUnitSubType_MIDISynth which is supported on both iOS
and OS X.  The underlying synth engine for this type is very close to fully
SoundFont-compatible.  Unfortunately we do not have any documents which
describe any missing features, if any.  Everything you list below is supported.
 Please file radars if you find problems.

-DS


> On Nov 18, 2018, at 7:50 AM, George Litterst <email@hidden> wrote:
>
> I have both Mac and iOS applications that load a custom SoundFont into
> kAudioUnitSubType_DLSSynth. These apps receive MIDI data and pass on the data
> to the DLSSynth. This basic scenario works great in our applications.
>
> We are about to embark on enhancements to our SoundFont based on the
> parameters defined for SoundFonts in the 2.01 specification (the final
> SoundFont spec from Creative Labs).
>
> Can anyone provide a comprehensive list of SoundFont features that are or are
> not supported by kAudioUnitSubType_DLSSynth in the Mac and iOS environments?
>
> In particular we plan to improve the realism of various instruments by
> defining the parameters for the SoundFont's “modulators.” These modulators
> enable different types of MIDI input (key velocity, key number, continuous
> controllers, etc.) to control any number of synth parameters. By tweaking
> these modulator parameters for each instrument in the SoundFont, we can
> specify—in theory—the way in which a low-pass filter adjusts the timbre of an
> instrument based on velocity, map the mod wheel to control filter cutoff,
> crossfade samples, and so forth.
>
> Of course it would be a delight to learn that kAudioUnitSubType_DLSSynth
> supports the complete spec.
>
> Thanks,
> George Litterst
> TimeWarp Technologies


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 >kAudioUnitSubType_DLSSynth and support for SoundFont 2.0.1 features (From: George Litterst <email@hidden>)

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