[sdiy] Keyboard Lag

[Joe Kramer]

Hi Friends,
    What is considered the maximum tolerable lag time for a keyboard in
milliseconds?  Being a guitarist (please go easy on me Batz--at least I can
build and fix my own pedals), I am accustomed to no lag at all, and am
sensitive to it whenever I play midi/keyboard intruments.  Previous discussions
of the DX7II's mushy response led me to measure what I felt was a distinct lag
on my little PSS-460.  By simultaneously recording a direct signal and the
mic'ed keys into a computer, I was able to view the lag time clearly--about
3ms!  Trying this same test with an analog keyboard (MS20), the lag was about
half that, at 1.7ms.  I am expecting the schematics for the PSS-460 any day
now, and would like to look into fixing the lag (I love the sound and
simplicity of this thing), maybe by upgrading the processor that handles the
keyboard signals. . . .  Is it possible?  Thanks.

Regards,
Joe Kramer