I plan to build an electronic drum with 8 keys.
Sound exaples: http://www.hapitones.com/hapi-drum-sound-samples.html
I use piezo-disks as pressure sensors (i don't use MIDI-software, the sound has to be created in the Arduino itself, or in a shield. MIDI Output would be cool, but is not required):
The main problem is the long reverberation (up to 5sec) of the played notes. Means: If i hit the keys to fast, the arduino must mix the sounds with the other Keys.
As i know, all the available WAV- or MP3-shields can not mix sounds. So i was wondering, if there is a way to create the sound with the build in soundgenerator of the Arduino. Is it possible (and programmable) to mix the different frequecies of each played key (with reverberation or fade out) and play theme?
Or is it possible to use 8 WAV- or PM3-Shields with a Arduino and then mix the output?
Any help is welcome :-)