ACW does indeed get into a bit of trouble with certain genres of music, jazz being among them.

Not only for the "pushed" playing that is ahead of the beat, but also for the "behind the beat" style common among the better jazz players.

There is also another physical parameter worth mentioning here and that is the extensions on chords.

James Chandler Jr. once explained the situation to me during early Beta testing of the ACW.

The process is done using filtering algorithms, looking for the fundamental and then looking for frequencies at a certain amplitude that are stacked above that fundamental.

I've tried to put several paragraphs into that one sentence...

Anyway, there is more than just one factor or parameter at work here.

The timing is always important.

But there is also the consideration of the *audio quality* of the file in question.

As well as the chosen instrumentation and what kind of harmonics are involved.

One thing that is often overlooked by the jazzers and the ACW is the fact that if you are into jazz, you are also into developing your ears, or you should be, and able to get in there and correct those wrong chords that the ACW can come up with in a jazz tune.

The ACW can still represent a huge shortcut in the LAYOUT of a BiaB song, though. i find that it speeds up transcription considerably, no more counting bars for a listen, for instance, the format of the tune becomes readily apparent on the first pass of the ACW in most cases. That alone is a timesaver.


--Mac

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