Onset detection for slow attacks – looking for advice

Apr 18, 2013 at 10:46am

Onset detection for slow attacks – looking for advice

Hello,

I’m working on piece for hexaphonic guitar using ebow and need to do some onset detection. The audio from the individual strings is basically monophonic but noisy and with some crosstalk from adjacent strings.

The attacks can be very slow.

I’ve looked at few approaches but so far the detection is rather late and some events don’t get detected at all.

Any Ideas?

TIA

Richard

#67789
Apr 18, 2013 at 11:01am

Hi Richard,
if you don’t get any success here, it might help to get in touch with my colleague Ricky Graham, Assistant Prof of Guitar Technology at Stephens University, NJ:

http://rickygraham.com/about/

He’s a good friend of long-standing and if you mention my name, he’ll be very pro-active and helpful. He’s done considerable work in the area of hexaphonic string output and envelope following (albeit using PD on the software side).

Brendan

#243730
Apr 19, 2013 at 8:34am

Hi Brendan,

Thank you for that. I will get in touch with him.

Best

Richard

#243731
Apr 19, 2013 at 11:24am

>He’s done considerable work in the area of hexaphonic string output and envelope following

wow, that is a hardcore specific reference right there! :) Love it.

#243732
Apr 19, 2013 at 2:28pm

Yeah I know! He’s just finished his doctorate, and a substantial portion of his thesis relates to contour recognition, based on input from discrete strings’ audio output.

I’m living vicariously of course.

Brendan

#243733
Apr 28, 2013 at 7:40pm

Hi Richard

any joy from Ricky?

Brendan

#243734
May 1, 2013 at 9:33am

Hi Brendan,

yes, we’ve been in touch and he’s offered me some pointers. I’ve got something working now though the whole patch is a bit flakey.Still, it held together yesterday when I played the guitar piece to an audience for the first time.

Barry Truax was sitting about four feet away from me – so no pressure there then.

Anyway it went OK- now to make it work properly.

Richard

#243735
May 1, 2013 at 10:58am

Glad to hear it – at least the performance anxiety was based in illustrious peer pressure and not unreliable patch fear.

Brendan

#243736

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