right|300px|thumb|A Dolby SR card for a multitrack station.
right|thumb|First prototype of Dolby SR encoder/decoder, created by Ray Dolby on [[perfboard.]]
The Dolby SR (Spectral Recording) noise reduction format was developed by Dolby Laboratories and has been in common use in professional audio since 1986 and in-theater audio since the late 1980s.
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See also
- Dolby noise-reduction system
- Dolby Surround
- Dolby Digital
de:Dolby#Dolby SR