Re: Velocity with fvcurve

On Tue, Dec 25, 2018 at 10:26:30AM -0800, dan cunningham wrote:
> Hi, I have midish running on a raspberry pi connected to a Yamaha player piano
> via a USB midi cable.  
> 
> I can successfully import a midi file and play, stop and pause playback of the
> midi file to the piano.  So far, so good.
> 
> What I am now trying to do is change the output volume (velocity I believe) as
> the piano is very loud at the default level.
> 
> I have tried setting a filter as follows, but there does not seem to be any
> adjustment to the output.
> ----------------
> dnew 0 "20:0" wo
> fnew volume
> fvcurve {} (-63)
> import "/tmp/song.midi" 
> p
> -----------------
> 
> I'm wondering if the filter is being applied to the input file at all?  Would
> appreciate any help.
> 

Hi,

AFAIU, just need to set the volume of the piano channel, aka
controller number 7.

You've to figure out on which channel the piano is playing
and add a controller event. For instance, if the piano is on
channel 5, to set the volume to 100, do:

import "/tmp/song.midi"
onew piano {0 5}
oaddev {ctl piano 7 100}
p

[...]

FWIW, the velocity is curve filter rule is to adjust the sensitivity
of the keyboard, it applies to notes played on a MIDI input only.

HTH

-- Alexandre