TELDEC/DIN Curve
Telefunken and Decca founded a record company (Teldec) that used a characteristic proposed for German DIN-Standard on July 1957: DIN45533, DIN45536, DIN45537. It is similar, but not identical, to the RIAA. The extent of usage of this curve is unclear.
Time constants: 3180 µs (50 Hz), 318 µs (500 Hz), and 50 µs (3,180 Hz). Compare to RIAA time constants 3180 µs (50 Hz), 318 µs (500 Hz), and 75 µs (2,120 Hz).
Read more about this topic: RIAA Equalization
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