uRTcmix (Unity/RTcmix) demo projects

uRTcmix demo projects

November, 2019

Here are a number of Unity projects showing various ways of using uRTcmix within Unity. These were created using Unity v2.18, but they should work in later versions.

spheresound demos

These were the first demos created for uRTcmix. They are very simple demonstrations of how the system works. They're called "spheresound" because the uRTcmix scripts are associated with a sphere game object in each scene. There is no movement or any visual interaction -- only audio.

spheresound-demo.zip -- essentially the same as the "beep" prefab that comes with the uRTcmix.unitypackage as a small demo. It plays a 787.8 sine wave for 7 seconds on start-up.
spheresound2-demo.zip -- plays a continuous sine wave. The up/down arrow keys add and subtract 10hz to the frequency.
spheresound3-demo.zip -- produces a small random granular 'burst' on start-up. Shows how to read in an RTcmix text scorefile for use in the Unity script.
spheresound4-demo.zip -- reads an RTcmix text scorefile and continuously repeats random granular burst using the MAXBANG() RTcmix instrument.
spheresound5-demo.zip -- repeats a random granular score using MAXBANG(); up/down arrow keys add and subtract 10hz to the base frequency, left/right arrow keys set upper and lower bounds for the random frequency choice.

class demos

Most all of these come from the 2017 Sound: Advanced Topics II graduate seminar at Columbia University (hence the "class*" name on many of them). The projects listed below have been updated to reflect the current uRTcmix package, but the original syllabus/week-listing for the class contains the work-ups done to produce the final projects. Although they use an older version of uRTcmix, they may be instructive.

simplecat.zip -- very simple Unity playback of cat meow sample when a ball hits a rotating cube. Arrow keys move the ball. This only uses the basic Unity sample-playback capability; no uRTcmix is involved.
simplecatAM.zip -- cat meow sample is processed through an RTcmix AM() script, plus the brightness of a repeating STRUM2() RTcmix instrument is determined by the distance to a rotating cube. Arrow keys move the ball. This also demonstrates a slightly different way of sending the AM score info, using a method on the "catAM.cs" script (attached to the rotating cube ["mysticcube"] game object).
threetowers.zip -- RTcmix scripts using parameters dependent upon the distance from each of three towers, with an ambient wind sound in the background ("windsound.cs" script attached to the empty "windsound" game object). Two of the tower scripts unfold the chaotic 'population equation' (logistic map) with the R value (chaos!) getting higher as you approach the tower. One of these scripts uses WAVETABLE() and the other uses the STRUM2() instrument. The third tower opens a low-pass filter on a low drone sound as the distance to the tower decreases. Arrow keys move the observer (ball), and the "z" and "x" keys will start rotation left and right. The space-bar stops any rotation.
classtowers1.zip -- a cylinder moves up and down, with FMINST() parameters being modified by the height. No movement, very simple.
classtowersall.zip -- 4 cylinders going up and down, like 'classtowers1'. a fifth rectangle in the middle periodiocally moves up and down, also modifying FMINST() parameters by the height. Arrow keys move around; COMMAND-up/down arrow keys move up and down, "w"/"x"/"a"/"d" keys will rotate the 'camera' (stop the rotation by pressing the space-bar) without changing the the orientation of the underlying observer object. The amplitude of the sound of each tower is also modulated by distance, although it isn't a strong localization effect.
classffly3.zip -- point lights randomly fade up.down with associated sound. Each light is localized using the RTcmix LOCALIZE() instrument. Arrow keys move the observer; COMMAND-up/down will move up or down. "a" and "d" will start rotation left or right, with the space-bar stopping the rotation.
classwater7.zip -- generate 'droplets' (spheres) on-the-fly, falling to hit a simple water-mesh shader model. The collisions generate localized (via the LOCALIZE() instrument) sound, and the droplets shatter into a particle system. Arrow keys move the observer; COMMAND-up/down will move up or down. "a" and "d" will start rotation left or right, with the space-bar stopping the rotation.
classblobj4.zip -- This is a relativley complex demo. The filter cutoff of the low pulsing sound is set by the distance to the main object. The main object was created using the Blender modeling application. The granular synthesis sounds of the four flame-particle systems below the object are each localized with the RTcmix LOCALIZE() instrument. These flame-sounds are damped when the observer enters the main object, and reverberation is turned up. Arrow keys move the observer; COMMAND-up/down will move up or down. "a" and "d" will start rotation left or right, with the space-bar stopping the rotation. "w" and "x" will rotate the camera (not the obeserver) up or down, with the space-bar stopping the rotation. I'm not sure why we named this "classblob4j".

CCM demos

These two demos come from a weekend workshop done with Mara Helmuth's students at the Cincinnati Conservatory of Music. The students had already done some work with uRTcmix, so these demos cover slightly more advanced uses.

CCM-demo1.zip -- This demo shows how to send sound sample data from several separate RTcmix processes into one for 'global' treatemnt. The 'rvb' game object collects the sound from several other RTcmix game object processes and applies the RTcmix GVERB() reverberation instrument to the combined signals. Arrow keys move the observer; COMMAND-up/down will move up or down. "a" and "d" will start rotation left or right, with the space-bar stopping the rotation (the sound from the game objects is localized).
CCM-demo2.zip -- This is a simple 'trigger' demo, and it also instantiates a very basic terrain. Going through the thin rectangle in the valley will change the RTcmix output. Turn the mesh-renderer off and the trigger will be invisible. Arrow keys move the observer; COMMAND-up/down will move up or down. "a" and "d" will start rotation left or right, with the space-bar stopping the rotation. This also shows how separate RTcmix game object scripts can access the same RTcmix process using the same "objno" designator.

In addition to these examples, the work done in the 2019 Sound: Advanced Topics I graduate seminar should be helpful. Check the weekly links on the course syllabus for examples of developing a virtual environment with various uRTcmix features.