On Sat, Feb 10, 2007 at 02:52:28PM +0100, Mario Lang wrote: > Hi. > > I recently started to play a little keyboard. After guitar > and traverse flute, the keyboard seemed the logical next step. > > I guess its totally normal to have a little problem with > exactness. I wonder if there is a MIDI tool that > could be used to measure my average jitter so that I could > test myself and see if I improve? > > For instance, when playing BWV 846, it should be actually > fairly easy measurable since that piece consists of mostly > only 16th notes. > > Does such a program exist? I know the concept isn't that > strange, Stanley Jordan told in a master session he > was doing something like this with his MIDI-fitted guitar. > hi, recent development snapshots (not releases) of midish display the average jitter when a track is quantized. This isn't really a feature, it's here mainly for debugging purposes. Once MIDI devices are setup, you can use it as follows: $ rmidish send EOF character (control-D) to quit 1> nt mytrack # create a new track 2> r # record with metronome press control-C to finish ^C --interrupt-- 3> sel 100 # select 100 first measures 4> n 16 # set quantization step to 16th note 5> q 100 # quantize the selection track_quantize: fluct = 109, notes = 155, avg = 70% of a tick 6> so the average jitter is 70% of a MIDI tick (there are 24 ticks in a quarter note). Above commands could be embedded in a shell script. Feel free to contact me if you encounter problems. cheers, -- Alexandre
