color trigger for sound?
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Hi, folks. Need to figure out
1.) how to trigger sounds from constantly flowing/appearing/disappearing visual flows of various colors and their amounts/volumes onscreen, and
2.) if I can also simultaneously trigger sounds from movement sensors, either from a body suit or spatial sensors.
The video source material is satellite-based climate data over geographical areas. Movement style is popping.
Thanks for any tips, and happy to join this community!
M.
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hi, all this is doable. the Comparator is probably going to be a very useful actor. for the colours, you could separate out the various colours using a set of Chroma Key actors (set to Inverse, so that you only see the specific colour) and Calc Brightness to get data from the amount of each colour in a video feed.
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Yes, doable. Similar setup worked from me in a performance situation - only problem might be changing light in the venue... sometimes hard to predict! Good luck with your project. John
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Regarding 1.
As @dbini said, using the chroma key actors and calc brightnes for each of the colours you've defined is probably the most obvious approach. You might want to reduce the resolution of the analysed video stream (scaler) to the minimum required for in order to save CPU/GPU resources. The projected video can remain in its original resolution.
Regarding 2. Motion sensors.
I've used old smartphones running free OSC apps to get accelerometry data over WiFi. It works great and it's a very cheap approach.
Sensor2OSC is probably the best app for Android for this at the moment. I think it is not on the playstore, but it should be easy to find the APK.
A more professional approach could be the NGIMU sensor. I just bought 2 of them two weeks ago and so far, I'm happy with them. You have several parameters you can use to trigger sound or whatever you want.
If you're not familiar with the chroma actor, you can look for color tracking isadora tutorials. There you'll get a grasp for the fundamentals.
Good luck
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@dbini Thanks!
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@jjhp3 Thanks!
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@gaspar Thanks very much!
