It is supported, but you cannot do queries on the kAUGroupParameter IDs. You will have to create (with AU Lab) your own aupreset for the AUSampler which makes use of the PolyPressure events. There is no default behavior for these. There are a couple of Tech Notes about creating aupresets.
-DS On Oct 10, 2014, at 12:42 PM, Ian Kemmish <[email protected]> wrote: > > On 10 Oct 2014, at 15:30, tin <[email protected]> wrote: >> >> I’m trying to use MusicDeviceMIDIEvent to send after-touch message (or >> named poly-pressure , 0xA..) to a synth audioUnit. in my Mac app. >> >> it seems doesn’t works. is it unsupported in CoreMIDI or AUSampler ? > > > It's definitely supported by CoreAudio, as my homebrew synth uses it. I > think it's safe to say that CoreMIDI supports it too (after all, they're just > standard MIDI commands requiring no special processing until you want to do > something with them). > > Unfortunately, since 1) supporting polypressure in a synth requires adding > code, and 2) very few MIDI keyboards have ever generated polypressure > commands, I suspect that the vast majority of synths will simply ignore them. > > So, my guess would be that polypressure is supported by CoreMIDI, but not by > AUSampler. > > > You could try GetParameterInfo() with > kAUGroupParameterID_KeyPressure_FirstKey, and see if AUSampler returns useful > information or an error. > > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - > Ian Kemmish 18 Durham Close, Biggleswade, Beds SG18 8HZ > [email protected] Tel: +44 1767 601361 Mob: +44 7952 854387 > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - > > > > > _______________________________________________ > 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/douglas_scott%40apple.com > > This email sent to [email protected] _______________________________________________ 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]
