Welcome back to CS First Scratch Music and Sound, where you use computer scienceto make creative projects involving sound. Today, you will make a DJ mixing tool. DJsuse scratching techniques and digital mixing boards to build their own music. They incorporatesounds sampled from other songs and mix them into an underlying beat for people to danceto. While watching the dancers, DJs can use the mixing board to adjust their music choices,sample selections, and scratching techniques in the moment to engage their audience. DJseven “battle” at world-wide events, where they are given a limited amount of time (usuallyanywhere from 30 seconds to a couple of minutes) to show off their skills.
Did you know that the mixing board that makes all of this possible is actually a typeof computer that uses technology built by computer scientists? Take a look at some DJs,and notice how they they use technology to create music.
My work always involves technology, and it always involves building my own tools,whether it's in software or hardware.
Today, you'll create a DJ Mixer in Scratch to mix music, change the speed of a repeatingloop, and play sampled sounds on a keyboard. Take a look at this example DJ Mixer. A loopof background music starts playing when the flag is clicked. The DJ can use the "meowspeed" slider to adjust the frequency of the "meow" sound. Or, pressing the spacebar likethis <press spacebar> will play an additional sound.
In today’s club, you’ll build a DJ Mixer tool like this one and choose the sounds tomake your own dance track or even DJ battle with your friends.
Here is another example of a DJ Mixer that has a lot more sounds and options for the DJ to use.
To get started, just as you did on your otherclub days, sign in to Scratch with the information from your CS First club pass, create a newproject, delete the Scratch cat, and name your project "DJ Mixer."
Next, choose any sprite you like to be the DJ.
Remember to help your neighbor if they have a question or ask them to help you. When youare finished with these steps, come back to this CS First tab and click the green arrowto move on to the next screencast.
Welcome To Viet Nam - Vietnam Open Festival - Dj Mixing by vietnampg (https://www.youtube.com/watch?v=15tLEGqwxZo) licensed under CC-BY 3.0 (http://creativecommons.org/licenses/by/3.0/)
dj sniff - Experimental Turntablism - Interview and Rig Tour by cdmtv (https://www.youtube.com/watch?v=dfzBtIpzqas) licensed under CC-BY 3.0 (http://creativecommons.org/licenses/by/3.0/)
DJ FLY et NUMARK NS7II : le turntablism avec contrôleur par DJ FLY (champion du monde DMC 2013) by La Boite Noire du Musicien (https://www.youtube.com/watch?v=ZUaTZ89i4Ho) licensed under CC-BY 3.0 (http://creativecommons.org/licenses/by/3.0/)