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The History of Recorded Music
1930s - 1950s


1931:
The Gramophone Co. (HMV) and the Columbia Graphophone Co. combined to form Electrical and Musical Industries (EMI). Alan Dower Blumlein (EMI) was granted a patent for a stereo recording technique that provided the basis for present day techniques. Edison died aged 84.


1934:
BASF manufactured 50,000 metres of magnetic recording tape for use by AEG for large scale experiments.
1935:
AEG-Telefunken gave the first public demonstration of the Magnetophon tape recorder at the Berlin Funkausteilung.
1936:
BASF engineers, using a Magnetophon, recorded Mozart’s Symphony No.39 with the London Philharmonic Orchestra conducted by Sir Thomas Beecham. The first tape recording of a full symphony orchestra, it still exists and is of surprisingly good quality.
1938:
Experiments were being carried out on the problems of multi track optical and magnetic recording onto 35mm film stock.
1941:
Leopold Stokowski, who since 1917 had shown an interest in musical techniques to improve recorded performance, conducted the recording sessions for the soundtrack of the Walt Disney film ‘Fantasia’. The result was a technical and artistic triumph.
1942:
RCA Victor presented the first ever ‘Gold Disc’ to Glenn Miller for the million selling ‘Chattanooga Choo-choo’.
1945:
The immediate post-war release of research facilities to peaceful purposes gave tremendous impetus to sound quality improvement. The frequency spectrum covered by recording increased dramatically. During the war years background music came of age. By decreasing fatigue and raising morale, it contributed significantly to wartime productivity. Some estimates found it increased output by as much as 25%. This revelation had an enormous impact on the history and development of recorded sound.
1948:
The oil industry had developed a multi purpose thermo plastic, polyvinylchloride (PVC), suitable for making recording tape and gramophone records with very low surface noise. The flow characteristics of PVC made possible the pressing of microgroove long playing records developed by a CBS team headed by Dr Peter Goldmark. Edison had released ‘Long Playing Discs’ with a duration of twenty minutes per side as early as 1926 but they could not be fairly compared with the CBS microgroove LP.
1949:
The first demonstration of the transistor by Shockley, Brittain and Bardeen caused a revolution in recording equipment design and performance parameters, and was to have the same effect on domestic equipment. With the release by RCA of the first 7 inch diameter, 45 rpm microgroove discs, a short lived and good tempered battle to establish a new standard, 10 inch (or 12 inch) diameter records at 33.33 rpm or 7 inch (or larger) diameter records at 45rpm, commenced. In the event, both existed happily side by side each serving a particular purpose.
1950:
Cinerama presented multi sound track replay to the public for the first time. This stimulated public interest in the possiblility of stereo recordings and research was stepped up.
1952:
The record companies generally adopted the new standards with the vast improvements in sound quality. Production of the 78rpm shellac disc began to be discontinued.
1954:
The companies began to provide the equipment for stereo recording in major studios. The possibility of recording ‘right hand’ and ‘left hand’ signals simultaneously on separate tracks on quarter inch magnetic tape had already been demonstrated and some of the major problems inherent in transferring both signals to one groove of a disc had been solved by Baumann in 1930.
1956:
Stereo LPs became available and new releases were issued in both mono (monaural) and stereo (stereophonic) versions. The Philips original cast recordings of ‘My Fair Lady’ was one of the first million seller LPs together with Van Cliburn playing Tchaikovsky’s First Piano Concerto.


Outside Our Industry.
Wikipedia reference to CPS
Wikipedia reference to Disc Jockey
Wikipedia reference to Mobile Disc Jockeys

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CPS Community History - News - Announcements
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Certified Product - Denon's DN-HD2500 Controller Awarded CPS Certification
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CPS - What Does It Mean and Why Computer DJs Are Using The Term? (*pdf)
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The Official CPS Industry Survey
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2008 Computer DJing Industry Survey
The purpose of the survey is to collect product-anonymous information about computer DJs, which we will aggregate and publicly share with the hardware manufacturing and software development community community. The survey features multi questions, and upon completion you will be entered in a drawing to win some great prizes and software. All responses will remain completely anonymous and no personal information will be shared, harvested or sold. The more completed surveys we get, the better our data will be, meaning our findings will be of greater interest to the hardware manufacturing and software development community. Be sure to take the survey! All of your information will remain anonymous, and once we receive enough responses, we'll announce when we'll publish the data. Click here to take survey.

Educational Review Material
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DJ Summit Review DVDs
Did you miss last years Computer DJ Summit? After two years of coveing many 101 topics, future Summits will now focus on advanced learning. If you missed the wealth of information shared during the Summit you will find several review DVDs now available in the official CPS Store. These DVDs will catch you up for future events. DVDs ar available in two disc sets and mega sets. Click here for details.

General Program Details

CPS Certification Gives an Edge
In a white paper titled Certification: Networking With the Best, George R. Conrade, wrote, "Certification is an excellent way to gain a competitive edge and give proof of your abilities, knowledge, and level of skill. To be certified in any profession, whether it's as a Certified Public Accountant (CPA) or as a CPS Certified Disc Jockey (CPSDJ), means you have joined a network of individuals who meet consistent, knowledge-based standards of ability, position, experience-even ethics. When you pursue certification, you're testing yourself against these standards of proficiency." Click here for details.

Click to view details of the 2007 Dj Summit

2008 Computer DJ/VJ/KJ Summit
Special announcement... The 2008 DJ Summit will be hosted where it all began Atlanta, Georgia. This years event will be groundbreaking for the novice and experienced Disc Jockey. Anyone “already” or “planning” to mix mp3s or other music file format with hardware, software or combination of both. Block your schedule and don't forget to attend the Monday evening " Weddings Ground-0" seminar to discover the plans for the 2009 Summit.

NOTICE: The 2008 Summit is being held in a High-Tech room where you can plug-into the live experience. This is a full extended day of seminars. Sundays Atlanta-Ground-0 Experience is a day of networking and touring landmark locations of the city.


LAST UPDATED:
August 20, 2007


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