> And, as I said above, it did work better with some samples than with
> others, but: it works :-)
>
> Here are three example of what it sounds like, using a modified guitar
> chord sample as response file :
>
> 1 - For this one I softly hit the edge of the pad continuously, and the
> middle of the edge harder once at the beginning of the measure :
> http://samalyse.com/labs/edrum/audio/beat.ogg
>
> 2 - Playing faster ("rolling") with this one :
> http://samalyse.com/labs/edrum/audio/roll.ogg
>
> 3 - Using a pen to hit and scratch the surface. The rubber surface, made of
> several layers of bike tube makes it possible to obtain an interesting
> sound (the input level was not high enough for this one, so I normalized it
> afterward, it could sounds much better I think) :
> http://samalyse.com/labs/edrum/audio/scratch.ogg
>
> As you may see, scratching seems to work fine in here :-)
>
This is so incredibly cool! Is this technique already in wide use somewhere
that I missed? Because if not, it should be. This means that all you need
for an electronic drum set is a multichannel sound card and some homemade
piezo-triggered pads! And I think with some further experimentation with pad
materials and response files, you can probably come up with all kinds of
permutations on the sound. I'd like to hear what this sounds like using some
traditional drum samples ( like a snare or an 808-style kick ). I'm assuming
that the current samples lack "punch" only because they are from a piano
chord response file.
> By the way, Ben, what do you think of my idea of coupling triggering with
> convolution, as stated in my previous mail (above, third paragraph) ?
> Here's a diagram to further describe this idea :
>
> pad signal ----> trigger detection ----> sample playback -----
> | |
> | |
> -------------------------------------> convolution <----
> |
> |
> +--> output
>
> Would this be possible ?
You essentially _have_ the drawing, above. You just can't change the sample
on every hit. I don't know what you expect to achieve. Trust me, what
you've got now is much cooler than a triggered playback (although it does not
sound the same)
It is possible that using a triggered sample or some sort of envelope follower
will be required to get the attack of a traditional drum sound. I'm sure
there are lots of ways to improve this simple system beyond jack_convolve. I
think you've stumbled across a really cool synthesis technique!
-Ben
Received on Thu Jun 9 04:15:16 2005
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