Process Watcher
A method for installed playback systems. Set as a login item for macOS. Adjust the target process and launch file as necessary. The watcher script will check that the defined process
Tag: Command Line
Updates on Github/Kreivalabs
Numerous updates have been made to the repositories at https://www.github.com/kreivalabs. Rather than continually update the printed code in the previous posts, please head over to the git repositories (and follow the
Speaker coverage measurements with Python
NOTE: visit https://www.github.com/kreivalabs for current code versions. Calculate the coverage pattern area of a point-source loudspeaker based on its dispersion angle and the measured distance from source to listener (or some
Convert Samples to Time with Python
NOTE: visit https://www.github.com/kreivalabs for up to date code versions. The following will calculate elapsed time in milliseconds and seconds for a given sample rate and time (entered in seconds). It will
Acoustic Velocity and Loudspeaker Delay with Temperature and Python
NOTE: visit https://www.github.com/kreivalabs for the current code versions. Building on the method below, here is the same calculator in Python (hooray for cross-platform!). Save the text below as a .py file
Further Adventures with Twitter, node-red and Sonic Pi
Building upon the methods explored here, I’ve been experimenting with using node-red’s Twitter node to interface directly with ruby files in Sonic Pi by means of shell scripting. By creating multiple
Control QLab with Twitter
UPDATE 7/10/17 – Check out the contributed module from Sam Levey, with nodes to control QLab via OSC messages and a node to control node-red from QLab: https://www.npmjs.com/package/node-red-contrib-qlab This eliminates some
Make a secure ad hoc wireless control network
At some point along the way (I can’t remember when…), Apple removed authentication security from the ad hoc network function “Create a network…” in the Wi-Fi setup. I use ad hoc
Qlab->Terminal->SonicPi
Controlling Sonic Pi from QLab – Use Sonic Pi to generate pre-show music for your designs. Sonic Pi, created by Sam Aaron at Cambridge University, is a fantastic live-coding music synth utilizing Ruby script and
