[denha] has assembled a noise box he calls the XR-NOISE using an XR-2206 multi-waveform function generator. The output has an impressive number of controllable settings, and uses a set of LEDs to indicate sound level and rate. The XR-NOISE uses 1/4″ jacks for both in and out, and can also be controlled by the tap-sensitive mic located on the front of the box. Unfortunately, there doesn’t seem to be any further documentation or schematics to provide context, but it seems that this function generator chip has also been used for other audio hack projects as well, including a scratch-synth using resistive pressure sensors.
Scratch input allows us to use solid surfaces as an input devices by capturing the sounds they produce. Using a stethoscope and a high pass filter, they capture the unique sounds of specific gestures. Custom software then translates this to actions for applications. The video shows some really cool stuff, like turning an entire wall into an input device. It goes around corners and past doorways. They even talk about potential using your clothes to capture input.
[nvillar] wanted a relatively cheap way to make a rotary input device for audio mixing. After looking at several options including turn tables and professional audio scrubbers, they decided on the hard drive due to its size, price, and the feel of the disk. The geek factor of using a hard drive as an input device probably didn’t hurt either. They provide schematics and details on how to make it all work. There’s a video after the break of the unit sending signals to a computer. No performances though, sorry.
Homebrew developer [yaarglafr] recently released this video of his Protein DScratch in action. You can download a demo version here. The program simulates DJ scratching on the DS with an intuitive interface much like the ones on the touchscreen turntables we discussed the other day. It works well with any of the major DS slot devices; just run a DLDI patch on it and you’re good to go.
While we were researching the AudioCubes, we ran into this amazing DJ system by designer [Scott Hobbs]. He calls it the ATTIGO TT, and it uses two touchscreens to simulate the turntables on a conventional system. More technical details after the break.
