An older material from which records were made before vinyl was introduced. Shellac records are more brittle and had lower sound quality compared to modern vinyl records.
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Shellac
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Signal-to-noise ratio
The ratio between the desired audio signal and unwanted noise. A higher value means clearer sound.
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Single
A record typically featuring one main track and a B-side. It usually has a length of about 2 to 5 minutes per side.
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Skipping
The issue where the needle of a record player skips over a part of the groove, often caused by dirt or damage to the record.
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Stereo
Stereo (stereophony) uses two separate sound channels to create the impression of space and depth.
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Stereophonic sound
The sound created using two or more audio channels to provide spatial and realistic sound reproduction.
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Stylus
The part of the cartridge that directly contacts the grooves of the record. It converts the vibrations caused by the grooves into mechanical movements, which are then converted into electrical signals by the cartridge.
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Surface noise
The audible noise caused by the surface of a record. It can result from dust or scratches.
