Hi!<div><br></div><div>Im currently working with a project developing tactile feedback for stimulation of disabled children.</div><div><br></div><div>Im getting quite far in using a rough surface, a contact microphone and buttshaker. My signal path is something like mic-&gt;bandpass-&gt;filering-&gt;amplitude control of an oscillator-&gt;lowpass-&gt;speaker</div>
<div><br></div><div>i wish to get the sound a bit more interesting, so i would like to add an echoeffect something like:</div><div>-Starts when there has been no sound (amplitude=0 after filtering) for 0,8 seconds.</div><div>
-Playbacks the last 1,6 seconds of sound (then there will be 0,8 seconds of noise and 0,8 seconds of silence) with 60% amplitude</div><div>-Repeat the echo with decreasing amplitude (i.e 45, 30 and 0%)</div><div><br></div>
<div>I believe i should use delay lines but i have a hard time controlling them the way i want.</div><div><br></div><div>Some help would be really appreciated by me and the children</div><div><br></div><div>/Stefan</div>