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I am looking for a way to play midis with a special reverb in a midi player or similar.

This reverb, which was used in a Nintendo 64 game, uses a special reverb technique that seems to be a combination of hall and reverb and conflicts with each other, resulting in a lower volume the higher the reverb event is set.

Here is an example. First note has no reverb event, second has one with a value of 70, then 90, 100 and 127. It gets steadily quieter even though the actual volume of the channels and notes are completely the same in the midi:

https://cdn.discordapp.com/attachments/502388312850300928/1092056255528435742/Reverb.mp3

The thing is, it doesn't have to be mimicked completely exactly, I'm just concerned about the volume being mimicked that way.

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The reverb doesn't change. That's just the wet/dry balance changing. First is entirely dry [100% signal, 0% reverb], last is entirely wet [0% signal, 100% reverb].
The reverb itself I'd call a relatively un-spectacular room emulation, available anywhere. You might have to bit-filter it to get it as grainy as the original.

There is no dedicated controller message for wet/dry, though there are many controllers that could be used, all just labelled 'generic'. A manufacturer may be using any of thse, or even NRPNs. [non-registered parameter numbers]. You could possibly identify it if you have the actual midi file.

Here's an easy-to read list of controllers - Another Producer
Full [mind-numbing] detail is available from https://www.midi.org/

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  • I'd suggest using a fast delay in addition to a short reverb to get the graininess.
    – Edward
    Commented Apr 5, 2023 at 0:11
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    That will generate 'flutter' not grain. The graininess comes from the low bit-rate of the effect. I didn't address the awful 'clanginess'… but I'm sure you could find some point on even a decent reverb that would emulate your grandma's dining room ;)
    – Tetsujin
    Commented Apr 5, 2023 at 6:39
  • Yeah, I was using the word "grain" in the same sense as granular synthesis.
    – Edward
    Commented Apr 5, 2023 at 22:58
  • Thanks for the info! But with which midi editor or player could you set this reverb, or mimic? With VLC Player, for example, I can configure a reverb with the Spatializer, but this is then fixed to all channels and uses only a single fixed reverb value, instead of that it is oriented to the reverb midi event. I have also experimented with LMMS, mimicking the reverb, but the program seems to use a completely different volume level, causing the volume levels of the individual instruments to be quite different. Commented Jun 16, 2023 at 13:29
  • It look like you should be able to do it in LMMS, but I've never tried it, so I really don't know how it works beyond what the first page of their advertising says. You'll have to wade through the manual.
    – Tetsujin
    Commented Jun 16, 2023 at 13:55

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