Thank you very much for the reply, Douglas. I checked with the programmer and now realize that I made an error in what I wrote. To create a 16-channel GM synth, we currently use kAudioUnitSubType_Sampler, which is a mono-timbral. We create 16 instances of kAudioUnitSubType_Sampler in parallel to form the GM synth.
Does this sound like the best approach? Does kAudioUnitSubType_Sampler support all of the features of the SoundFont spec? Thanks, in advance. George > On Nov 24, 2018, at 3:00 PM, [email protected] wrote: > > Send Coreaudio-api mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.apple.com/mailman/listinfo/coreaudio-api > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Coreaudio-api digest..." > > > Today's Topics: > > 1. Re: kAudioUnitSubType_DLSSynth and support for SoundFont > 2.0.1 features ([email protected]) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 24 Nov 2018 08:18:44 -0800 > From: "[email protected]" <[email protected]> > To: George Litterst <[email protected]> > Cc: [email protected] > Subject: Re: kAudioUnitSubType_DLSSynth and support for SoundFont > 2.0.1 features > Message-ID: <[email protected]> > Content-Type: text/plain; charset="utf-8" > > 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 protected]> 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 > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <https://lists.apple.com/mailman/private/coreaudio-api/attachments/20181124/e7c5b9fb/attachment.html> > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Coreaudio-api mailing list > [email protected] > https://lists.apple.com/mailman/listinfo/coreaudio-api > > > ------------------------------ > > End of Coreaudio-api Digest, Vol 15, Issue 101 > ********************************************** _______________________________________________ Do not post admin requests to the list. They will be ignored. Coreaudio-api mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/coreaudio-api/archive%40mail-archive.com This email sent to [email protected]
