Massachusetts Geophonic is a performative interactive piece that uses data from the USGS Massachusetts geological map as a palette with which the performer can create music – music from geologic data. Here's how to quickly get going:
Use the mouse to drag the endpoints of one of the four colored lines in Cape Cod Bay so the line is on the map of Massachusetts.
Click the Play
button at the left of the controls corresponding to the color of
the line.
The playhead should begin to move and you should hear notes being played. You're good to go! If not, see “Troubleshooting” below.
Experiment with moving the line around and listening to different regions of the map or changing the speed of the loop.
When you've got the hang of that, try turning on the Rock Type > Timbre mapping in the top right corner.
Clicking a geologic term in the controls section will search for it using Google.
If the playhead doesn't move and/or you hear no sound, you may need to adjust your audio settings.
Make sure you're volume is turned up :-)
Click the Audio Processing Settings button to bring up the audio settings dialog. Select your desired audio driver and input and output device.
On Mac the driver should always be “Core Audio” and, unless you have another audio interface you want to use, the output should be “Built-In Output”
On Windows things are a bit more difficult to predict since there are so many different hardware configurations. If you have an MME driver try using that. If you have a 3rd party audio interface with an ASIO driver, this will give the best results.
The input device is not important – Massachusetts Geophonic does not use audio input
You may have to turn Audio on at the top of the settings dialog if if is off.
Massachusetts Geophonic should remember your audio settings at the next launch and you shouldn't have to go through this again.
If the audio is cutting in and out or has glitches, you may need to adjust your audio settings. I find these settings need tweaking much more often on Windows than they do on Mac.
Click the Audio Processing Settings button to bring up the audio settings dialog.
Try increasing the “I/O Vector Size”. This will add latency, but reduce demands on your computer.
If Sampling Rate is greater than 44100 Hz, try reducing it to 44100.
If you're on Windows, try a different audio driver from the “Driver” list.
Try increasing “Signal Vector Size”. This may or may not slightly change the behavior of the sound generation.
Try enabling/disabling “Parallel Processing”.
Make sure the Input Device you're using is on the same piece of hardware as your output device.
If none of this works, your computer may just be too slow. Sorry :-(