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A820 Recording

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Rather than simply scan the brochure, we transcribe the text in its entirety so that it is searchable from The Audio Archive search box on this webpage. In a few places, we do make comments and highlight features of the Studer A820 - these comments and highlights are in an alternative color.

This is not your typical marketing brochure. Studer clearly has the heart and mind of an engineering company - the Studer machines were made by tape Recording perfectionists, for tape Recording perfectionists. Rather than hyperbole, the brochure reads more like an introduction to an operating manual or a product management MRD (Marketing Requirements Document). The German-to-English translation by Studer is a bit clumsy at times, but still very readable and immensely informative.

Studer Recording

The Swiss based company Studer is one of the leaders worldwide for professional audio. Founded by Willi Studer in 1948, over the years the company and its brand name Studer became synonymous for broadcasting and recording equipment. Today Studer is able to offer solutions for nearly every application in the field of Professional Audio. Studer products are invented and manufactured in Regensdorf / Switzerland. The product range includes equipment and systems for TV / Radio Broadcast, Recording and Production Studios, or 19" components for system applications.

MS - A stereo recording technique that uses of two different types of microphones, a directional or cardioid for the M facing forward and an omni-directional or figure-eight for the S with the lobes at a 9. Used . 0 degree angle. The main advantage being that the center sounds are not 45 degrees off-axis eliminating the gap in XY recording. Initially there were problems with reflections due to the use. Used . of two different types of mics, however mics have now been developed to overcome this problem....

Stage Lighting - Modern stage lighting is a flexible tool in the production of theatre, dance, opera and other performance arts. Several different types of lighting instruments are used in the pursuit of the various p. Used . rinciples or goals of lighting. . Used . ...

Amphitheatre - The name amphitheatre (alternatively amphitheater) is given to a public building of the Classical period (being particularly associated with ancient Rome) which was used for spectator sports, games an. Used . d displays.

Apart from function, the important outward distinction between an amphitheatre and a theatre is that an amphitheatre is round or oval in shape (whereas a classical th. Used . eatre was semi-circular). However, an amphitheatre differs from a circus, which was used for racing and looked more like a very long, narrow horse shoe.

The best-known amphitheatre in the world is...

AB - A stereo recording technique. Two microphones of the same make and model are located next to one another in , and point in the same direction. The left mic is panned hard left on the mixer. The right. Used . mic is panned hard right.

This technique has flaws, such as audio reflections from each mic which can cause comb filtering (narrow coverage). This can be somewhat corrected by s. Used . pacing the mics out, but this will not fully correct the problem and can lead to muddy sound from delay artifacts.

Lumen - In physics, specifically photometry (optics), the lumen (symbol: lm) is the SI derived unit of luminous flux. It is the amount of light that falls on a unit spherical area at unit distance from a sour. Used . ce of one candela. In steradians this is equivalent to the amount of light that falls on a unit solid angle from a light source of one candela. Alternatively, one lumen is the total light pro. Used . duced by an isotropic light source of (1/4p) candelas. A 100 watt incandescent light bulb will output around 1500 lumens. ...

Recording

Sound recording is a form of recording or reproduction using electrical and mechanical translation of the sound waves. The sounds recorded are usually spoken voice, instrumental music, singing and sound effects. Audio recording can either be analog or digital. Analog recording uses a transducer such as a microphone to record sounds analogous to the air pressure surrounding the sound being recorded. The analog recorder may use a microphone diaphragm for acoustic sound recording. This microphone is highly sensitive to changes in the pressure of the acoustic sound waves. It records these sounds in graphic representations such as the phonograph that records grooves with a stylus. Sound waves from electronics can be directly reproduced from the pickups of an electric guitar or synthesizer. These are commonly used by musicians to hear how well they are doing during a recording session. Digital recording is the direct recording of audio or video into a storage device that records it as binary numbers representing the modifications in atmospheric pressure of the sound. The record can be stored and read back to be reproduced. This type of recording is more accurate and is more resistant to errors compared to analog recording. Both however have their own limitations. The analog system is bound by the capabilities of the medium and circuits used to record. In the digital system, the ratio of signal to noise is bound by the bit depth of the modification from analog to digital. Natural noise is a common limitation of both recording systems.