Re: kMIDIPropertyMaxSysExSpeed
Re: kMIDIPropertyMaxSysExSpeed
- Subject: Re: kMIDIPropertyMaxSysExSpeed
- From: Doug Wyatt <email@hidden>
- Date: Fri, 14 Sep 2001 10:22:11 -0700
On Friday, September 14, 2001, at 02:31 , Yoshiharu Honjo wrote:
Dear CoreAudio Team and the list,
I noticed the default value of kMIDIPropertyMaxSysExSpeed is
described as 3125 (Bytes/sec), on page 88 in the document "Audio
and MIDI on MacOS X" (coreaudio.pdf).
I think the correct value is 2500, as only 8 bits are utilized
for each 10-bit data (exclude a START bit and a STOP bit).
i.e.,
(31250 / (1 + 8 + 1)) * (8 / (1 + 8 + 1))
= 2500 (Bytes/sec)
Am I misunderstanding something?
MIDI is 31250 bits/second
= 3125 10-bit bytes/second
= 3125 (1 start bit + 8 data bits + 1 stop bit) bytes/second
Am *I* misunderstanding something? :-)
Doug
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Doug Wyatt
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