touch
December 18th, 2008 admin
Result of a quick exercise where we were challenged to create a visual representation of ‘touch’ [time restricted in-class project (25 minutes) ].
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sound [space] sound – visualization / control application
December 17th, 2008 admin
This java application was developed to enhance the acoustic research myself and my collaborator Alberto Tafoya have been pursuing this semester. In short, we are trying to understand and control acoustic interference patterns.
This post will focus on the current state of the research application that was developed in Java and SuperCollider (real time audio synthesis environment).
The majority of our research has been conducted in less then ideal acoustic conditions, in spaces lacking symmetry among countless other contributors of error (windows, unstable temperature, reflective walls). These conditions make the task of accurately predicting the locations of acoustic phase cancellation significantly difficult. To account for these sources of error, the decision was made to programatically map the formation of the interference patterns through use of an 8 channel microphone array. This would allow us to modify the phase of each output channel and monitor the changing interference pattern through the amplitude values recorded by our microphone array. This form of feedback system allows us to work with the inherent imperfections that are present within our working medium.
The application serves two primary purposes. First it allows for the execution of lengthy automated tests where the resulting data is collected in stored digitally. An example of this type of automated test would be the mapping of the 360^4 combinations of potential phase shift combinations given a maximum resolution of 1 degree.
Once this data has been collected, this same application allows for the immediate visualization of the acquired data. The interface allows one to overlay the microphone amplitude values overtop of a mathematically correct prediction of the interference patterns that would occur within an anechoic space.
The image set below describes the various states of the application in its present form. The main display area allows one to see both the mathematical prediction of areas of phase cancellation as well as the microphone amplitudes gathered during a given experiment. The fifth slider is attached to the experimental data and forces the phase of the 4 channels to match the experimental conditions at which the visible instance of data was gathered.
[ please contact for source code and experimental data ]
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