DIY SPDS: Can I use a voltage source instead of a piezo?

[Hellfire]

This topic is actually happening over at eDrumming.com, but I thought it was such a great idea that I thought I make everybody over here aware of it. Also, I was wondering if the TD-20 could use this type of device. (is it possible to program multiple sounds based on velocity; (i.e. I hit tom#1 softly and I get a gun shot, hit tom#1 hard and get a car horn)

eDrummin.com topic

I think this could be huge

[foofoo]

this is really nothing new (sorry to be the one to tell you). the spds will do 2 sounds. even my old ensoniq sampler did 8 velocity layers like 12 years ago.

[Hellfire]

Originally Posted by foofoo

this is really nothing new (sorry to be the one to tell you). the spds will do 2 sounds. even my old ensoniq sampler did 8 velocity layers like 12 years ago.

It's not the multi-sounds that is the cool part, it is the idea of breaking those (in your example of your ensoniq sampler) 8 velocities up into 8 separated pads with one mono input. That is what the link is talking about over at eDrumming.com. I know that some if not most samplers can be programed with multi-sounds based on velocity, but I didn't know if the TD-20 could be. I ask this because I use a TD-8 and there is one sound in it, that I can think of off the top of my head, that does the 2 velocity based sound triggering. The thing is, as an end user I am not able (through my TD-8) to assign sounds based on velocity to the same input. If someone know how to do this, please let me know because, it is not in the owner's manual.

[foofoo]

are you trying to plug more than one pad into an input and have each pad play a different sound? unless the pads gave off different but exact voltage for each pad i dont know how you could do that. and even then it would be just a bunch of glorified footswitchs. your sounds wouldnt have much life to them. it would just be a trigger to play a sound at a constant level.

[Hellfire]

Originally Posted by foofoo

are you trying to plug more than one pad into an input and have each pad play a different sound? unless the pads gave off different but exact voltage for each pad i dont know how you could do that. and even then it would be just a bunch of glorified footswitchs. your sounds wouldnt have much life to them. it would just be a trigger to play a sound at a constant level.

I have a question out of curiosity, have you click over to eDrumming.com to read the topic?, or are you just responding to what I have written here. Some sounds don't need to be different levels. A gun shot is a gun shot. a laser blast is a laser blast. These type of effects don't necessarily have to be velocity sensitive to have "life". If you want to call it glorified foot-switch, so be it. However some people may like the idea of having that kind of expandability.

[stlmike]

I skimmed over some of it, but i'd think a keyboard sampler would be more effective for that sort of purpose.

[elrules]

Originally Posted by stlmike

I skimmed over some of it, but i'd think a keyboard sampler would be more effective for that sort of purpose.

Would you really smash your keyboard with your drumsticks?

[stlmike]

I suppose not. I was assuming he was talking about using it for lead ins and fills and what not, where you'd just use your left hand without dropping the stick. my friend had a ten or so key midi keyboard he used for this. Just using the stick would keep you in the beat better.

[foofoo]

im just responding to your questions. i dont have time to start visiting another forum. im all about getting extra out of a unit. i was just commenting that even if it was possible it wouldnt trigger like a normal drum sound. i didnt realize there was much of a need for triggering just sound effects.i guess things like farts,slide whistles, and bottle smashes may be an important part of a perccusionists set up.

[RLTaxJoe]

Originally Posted by elrules

Would you really smash your keyboard with your drumsticks?

YES ...oh mine. i don't have one. My brother in law has one...I don't like him.

[Hellfire]

For all those who are interested (which aren't many), I got the circuit that should work. See the attached image.

drumswitch.jpg

You could in theory add as many switches as you would like, but I thought four was a good number.