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DJ Software:A Brief History by Victoria Peterson






Article Author Biography
DJ Software:A Brief History by
Article Posted: 11/20/2017
Article Views: 156
Articles Written: 1
Word Count: 724
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DJ Software:A Brief History


 
Art and Culture,Entertainment,Science & Technology
LOS ANGELES---DJs have changed their equipment as new technologies are introduced. The earliest DJs in pop music, in 1970s discos, used record turntables, vinyl records and audio consoles. In the 1970s, DJs would have to lug heavy direct drive turntables and crates of records to clubs and shows. In the 1980s, many DJs transitioned to compact cassettes. In the 1990s and 2000s, many DJs switched to using digital audio such as CDs and MP3 files. As technological advances made it practical to store large collections of digital music files on a laptop computer, DJ software was developed so DJs could use a laptop as a source of music instead of transporting CDs or vinyl records to gigs. Unlike most music player software designed for regular consumers, DJ software can play at least two audio files simultaneously, display the waveforms of the files on screen and enable the DJ to listen to either source.

The world's very first DJ turntables software named Retrogrooves was invented by great inventor André Gray and released in the interactive CD-ROM format on February 28, 1989 and featured the customary two turntables (left and right), a cross-fader, two volume controllers, two detached speakers and a record crate replete with 40 albums consisting of 1960's soul, funk, disco and experimental electronic music from the 1970's. Not having a barcode, Retrogrooves was sold in primarily mom and pop record stores in the USA and heavily bootlegged in Europe. Retrogrooves introduced the world to interactive music, democratized DJing and contributed greatly to the rise of EDM: electronic dance music (production & live performances), made a DJ out of everyone, had an immense impact upon hip hop music (production & live performances) and served as the template and grandfather for all future digital DJ turntables software, the first of which did not appear for a more than a dozen years in 2002.

The waveforms allow the DJ see what is coming next in the music and how the playback of different files is aligned. The software analyzes music files to identify their tempo and where the beats are. The analyzed information can be used by the DJ to help manually beatmatch like with vinyl records or the software can automatically synchronize the beats. Digital signal processing algorithms in software allow DJs to adjust the tempo of recordings independently of their pitch (and musical key, a feature known as "keylock". Some software analyzes the loudness of the music for automatic normalization with ReplayGain and detects the musical key. Additionally, DJ software can store cue points, set loops, and apply effects.

As tablet computers and smartphones became widespread, DJ software was written to run on these devices in addition to laptops. DJ software requires specialized hardware in addition to a computer to fully take advantage of its features. The consumer grade, regular sound card integrated into most computer motherboards can only output two channels (one stereo pair). However, DJs need to be able to output at least four channels (two stereo pairs, thus Left and Right for input 1 and Left and Right for input 2), either unmixed signals to send to a DJ mixer or a main output plus a headphone output. Additionally, DJ sound cards output higher quality signals than the sound cards built into consumer-grade computer motherboards.

Timecode

Special vinyl records (or CDs/digital files played with CDJs) can be used with DJ software to play digital music files with DJ software as if they were pressed onto vinyl, allowing turntablism techniques to be used with digital files. These vinyl records do not have music recordings pressed on to them. Instead, they are pressed with a special signal, referred to as "timecode", to control DJ software. The DJ software interprets changes in the playback speed, direction, and position of the timecode signal and manipulates the digital files it is playing in the same way that the turntable manipulates the timecode record.

This requires a specialized DJ sound card with at least 4 channels (2 stereo pairs) of inputs and outputs. With this setup, the DJ software typically outputs unmixed signals from the music files to an external hardware DJ mixer. Some DJ mixers have integrated USB sound cards that allow DJ software to connect directly to the mixer without requiring a separate sound card.

Related Articles - DJ, DJ Software, EDM DJ, Inventor Andre Gray, music software,







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