Le 22 Mai 2005 15:22, IOhannes m zmoelnig a écrit :
dB is a relative measure. +1dBfs == +1dB(midi) == +1dB(16bit) == +1dB(32bit) == ~ *1.12 (rms)
128 midi-values are *not* mapped to a 0..100 dB range; instead they are mapped to a -100..+28 dBfs range. this is what i meant by "28dB headroom" for amplifying low signals.
you cannot just map one range to another range.
I understand now. Thanks! But midi-dB resolution (1dB) is much too small; interpolation is required to smooth volume transitions from the lowest possible value to a certain level of amplification.
MIDI is almost obsolete, but I'm not sure we have a fast enough communication link to directly map the full dynamic range of 24/96 audio cards. Maybe with OSC and a UDP ethernet link... (but that's another question).
Le 22 Mai 2005 15:39, Miller Puckette a écrit :
I didn't have MIDI in mind at all when making the dbtorms, etc., objects.
That was my impression. Thanks for setting that straight.
Marc