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Re: [fluid-dev] [ fluid-dev ] How to set up mpe like behaviour?

From: Ceresa Jean-Jacques
Subject: Re: [fluid-dev] [ fluid-dev ] How to set up mpe like behaviour?
Date: Fri, 23 Apr 2021 21:26:11 +0200 (CEST)

>when fluidsynth receives midi notes on even channels, the audio is louder than on odd channels

No. After starting fluidsynth console application, and assuming the same instrument (i.e a piano) is set on channel 0 and channel 1. If you use a noteon command on channel 0 and channel 1 using the same velocity value you should hear that the note on both channels have the same level.


>It also plays two notes even though only one gets sent.

No. After execution of only one noteon command on channel 0, you should hear that only one note is played on this channel 0.


>I felt if the channel was in monophonic mode with omni off or some other combination, that might help.

No. You need only to set a channel in monophonic only because you want this channel behave like a monophonic instrument. On fluidsynth initialization the default mode for all MIDI channels is polyphonic mode.


>As an addendum, the reason it seemed like pitch bend was being ignored, was the pitch_bend_range wasn't set.

At fluidsynth initialization, the default value for pitch bend sensitivity is +/- 2 semitones. It is likely that for any 'mpe like implementation' one should need custom pitch bend sensitivity value for each relevant MIDI channels.



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