THE HISTORY OF ROCK AND ROLE1
Rock is a form of a popular music that originated from the united states in the 1950s. It incorporates electrically amplified instruments, heavy beats, and simple phrases. Rock-and-roll establishment was mostly comprised of teenagers and young adults, of which many fall into a group known as “hippies”.
Music performed in the group was produced by two groups of young men performing on different platforms. The main instruments used in the group were guitars, microphones, and amplified speaker systems. This type of music was mainly identified by a strong rhythmic pattern and loud sounds. In this genre, the audience preferred listening to music over dancing. This was clearly shown during performances since the audience crowded areas near the speakers to get the message from the song more perfect and first hand. In times of performances, especially on large stages, there was a sound engineer that monitored and controlled the output that was being produced by the speakers to ensure everything was perfect and was in order.
The main instruments that were used for recording music included; condenser microphone, a cathode-follower amplifier, a sound level meter and a movable tape recorder. A test recording was then conducted for a period of 50 to100 seconds. After completion, recordings were then taken to a laboratory for checking using a magnetic tape recorder, a sound level meter, an octave band filter, a graphic level recorder and a statistical distribution analyzer. The statistical analyzer was meant to identify the period at the time of the test recordings.
The graphics level recorder had a mechanical switching device attached to it that produced the statistical data which was then recorded in two ways. By doing this, it enabled the band to identify the total period count and time spent in each stage of production.
American Standards Association: The Relations of Hearing Loss to Noise Exposure, New York, 1954.
Rudmose, W.: Hearing loss resulting from noise exposure, in Handbook of Noise Control, by C. M. Harris, McGraw-Hill Book Company, New York, 1957, pp
van der Waal, J.: Peculiarities of noise enduring loss, Ann. Otol., 70:208-233, 1960
State of California: Noise Control Safety Orders, Division of Industrial Safety, Department of Industrial Relations, November 1962.