Ask HN: Guitar tabs online • Hacker News Board

Re: Ask HN: Guitar tabs online

#21

Post by jacquesm » Wed, Jan 06, 2010, 12:36 AM UTC

k0ban wrote: post #6

jacquesm wrote: post #5

Earlier quoted context omitted.

I would if I could play the guitar! You must have had some spectacular headaches to deal with, especially with multiple instruments playing through one-another.

This is correct. there is quite complicated math behind that.

I've been messing around with GPU coding lately, the speedups I'm seeing are pretty scary for some applications, likely you are using a lot of ffts, have you considered looking at GPUs to see if that might be a way to speed up the turn around time ?

Re: Ask HN: Guitar tabs online

#22

Post by wallflower » Wed, Jan 06, 2010, 3:19 AM UTC

k0ban wrote: post #6

jacquesm wrote: post #5

Earlier quoted context omitted.

I would if I could play the guitar! You must have had some spectacular headaches to deal with, especially with multiple instruments playing through one-another.

This is correct. there is quite complicated math behind that.

Sending this to my guitar-playing friends!

Tangent: Given your expertise, do you think it would be theoretically possible to write a program that attempts to detects the '1' beat in Latin/Afro-Cuban music, using your techniques, live, in real-time? Maybe using clave detection. Thanks in advance.

Re: Ask HN: Guitar tabs online

#23

Post by k0ban » Wed, Jan 06, 2010, 10:06 AM UTC

jacquesm wrote: post #21

k0ban wrote: post #6

Earlier quoted context omitted.

This is correct. there is quite complicated math behind that.

I've been messing around with GPU coding lately, the speedups I'm seeing are pretty scary for some applications, likely you are using a lot of ffts, have you considered looking at GPUs to see if that might be a way to speed up the turn around time ?

We hadn't, since this is not an issue so far. CPU is quite cheap, so it is much easier to use cloud than adjust code for GPU.

Re: Ask HN: Guitar tabs online

#24

Post by k0ban » Wed, Jan 06, 2010, 1:28 PM UTC

wallflower wrote: post #22

k0ban wrote: post #6

Earlier quoted context omitted.

This is correct. there is quite complicated math behind that.

Sending this to my guitar-playing friends! Tangent: Given your expertise, do you think it would be theoretically possible to write a program that attempts to detects the '1' beat in Latin/Afro-Cuban music, using your techniques, live, in real-time? Maybe using clave detection. Thanks in advance.

Not at this time. We rely on the whole song analisys for much of precision improvements.

There is some literature out there on real-time beat following but the precision is poor so far