Tutorials and Topics - Peabody Computer Music

Tutorial 28Processing:Delay lines with feedbackDelaying the delayed signalAlso, in the real world there’s usually more than one surface that reflects sound. In aroom, for example, sound reflects off of the walls, ceiling, floor, and objects in the roomin myriad ways, and the reflections are in turn reflected off of other surfaces. One simpleway to model this “reflection of reflections” is to feed the delayed signal back into thedelay line (after first “absorbing” some of it).Delay with feedbackA single feedback delay line like the one above is too simplistic to sound much like anyreal world acoustical situation, but it can generate a number of interesting effects. Stereodelay with feedback is implemented in the example patch for this tutorial. Each channelof audio input is delayed, scaled, and fed back into the delay line.Stereo delay with individual delay times and feedback amounts224