JackTrip for OS X - Association of Lutheran Church …



Some contactsFor more discussion about today's sessionJeff.Doebler@valpo.eduFor information on the aerosols studies being conducted at the University of Colorado-Boulder and the University of (also websites for NAfME and ACDA)To follow scientists from University of Colorado-Boulder on Twitter?@ShellyMBoulder@jljcolorado(Dr. Shelly Miller and Dr. Jose-Luis Jimenez) Music Together Online Is Not As Simple As It SeemsJuly 15, 2020 8:00 AM ETNICKOLAI HAMMARCOLIN MARSHALLHere's a seemingly simple question: Can musicians in quarantine play music together over an Internet connection? We've migrated birthday parties, happy hours and church services to video calls these days, so couldn't we do the same with band practice? Across ubiquitous video conferencing tools like Zoom, FaceTime and Skype, it takes time for audio data to travel from person to person. That small delay, called latency, is mostly tolerable in conversation — save for a few overlapping stutters — but when it comes to playing music online with any kind of rhythmic integrity, latency quickly becomes a total dealbreaker.This video follows pianist and composer Dan Tepfer down the rabbit hole. Tepfer often occupies the intersection of music and innovative technology (just check out his Tiny Desk concert), and by proxy has served his fellow musicians as a tech support line of sorts. A public inquiry on Twitter led him to jazz trombonist Michael Dessen, also a researcher at the University of California Irvine, who has centered his work around networked performances for over a decade. The solution: an open-source software called JackTrip, developed by Stanford University researchers Chris Chafe and Juan-Pablo Cáceres over a decade ago, that can transfer high quality audio data across the Internet at low enough latencies, within a geographic radius, to mimic someone playing music roughly 30 feet away; that's the threshold at which most musicians can still play together in sync. It takes a bit of hardware and a strong Internet connection, but the setup has enabled near instantaneous latencies for musicians who want to improvise together online.Tepfer has spent some of the last few months building a community of musicians using JackTrip at home, so they can practice together, work on new music, and even perform live-streamed concerts to fans as a revenue source while music venues remain closed in the pandemic. And while it's not nearly the same as playing in the same physical space, it's a close second in the era of social distancing. HYPERLINK "" for OS XInstructions for installing Jack and JackTripInstalling JackSince JackTrip works with Jack, it is important that you download and install Jack?before?you install JackTrip.Download Jack for OS X. The version that is available on the Jack web site does not work with recent versions of OS X. Download a beta version that works with El Capitan and later?here.Double click on the .pkg file to installOptionally, you can save and load Jack connections with? HYPERLINK "" JMess. Download and install the package file?here.Installing JackTripIf you are running macOS High Sierra, Mojave or Catalina,?download?the JackTrip 1.2 installer package.On older OS X releases,?download?the JackTrip 1.1 installerFollow the directions to installInstructions for running Jack and JackTripRunning JackJack has a GUI program call?qjackctl. It can be found in the Applications folder for Jack. Open the program:The QJackCtl program looks like this:Click on the?Setup...?button. You should see the Setup window:In the Setup window, select?coreaudio?for the?Driver. You can also change the values for?Frames/Period?and the?Sample Rate. Also note the?Server Path. This may be important if there is an error. See below.Say Okay and then click the?Start?button. If Jack started, it should look like this:Note: if you get error, try changing the?Server Path?setting mentioned earlier to /usr/local/bin/jackd instead of just jackd.Running JackTripJackTrip is run from a terminal. To open the?Terminal?application, go to Applications, then Utilities and open the terminalIn the terminal, type?jacktrip -s. If JackTrip is running, you should see the following in the terminal:In the Jack window, click the?Connect?button. If JackTrip is running properly, you should see it in the Connections window:Type?Ctrl-C?to exit JackTrip ................
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