Dolby A
E309487
Dolby A is an early professional audio noise reduction system developed by Dolby Laboratories, widely used in analog recording and film sound before later Dolby formats superseded it.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Dolby A canonical | 1 |
| Dolby Type A | 1 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
audio noise reduction system
ⓘ
professional audio equipment ⓘ |
| alsoKnownAs |
Dolby A
ⓘ
surface form:
Dolby Type A
|
| appliesTo | magnetic tape recording ⓘ |
| audioDomain | analog ⓘ |
| bandType | sliding-band ⓘ |
| channelConfiguration | two-channel ⓘ |
| componentOf |
Dolby A-type noise reduction
ⓘ
surface form:
Dolby professional noise reduction family
|
| countryOfOrigin | United Kingdom ⓘ |
| designedBy | Ray Dolby ⓘ |
| designedFor |
35 mm optical soundtracks (via encoding to print masters)
ⓘ
studio master recordings ⓘ |
| developer | Dolby Laboratories ⓘ |
| dynamicRangeImprovement | approximately 10 dB ⓘ |
| eraOfWidespreadUse |
1970s
ⓘ
1980s ⓘ late 1960s ⓘ |
| frequencyRangeTarget | mid and high audio frequencies ⓘ |
| historicalSignificance | early standard for professional noise reduction in analog recording ⓘ |
| inception | 1965 ⓘ |
| influenced | later Dolby noise reduction formats ⓘ |
| introducedAs |
Dolby A-type noise reduction
ⓘ
surface form:
Dolby Laboratories first professional noise reduction system
|
| marketSegment |
broadcast facilities
ⓘ
film dubbing stages ⓘ professional studios ⓘ |
| noiseReductionType |
compander
ⓘ
encode-decode system ⓘ |
| numberOfBands | four ⓘ |
| operatingPrinciple |
de-emphasis during playback
ⓘ
pre-emphasis during recording ⓘ |
| primaryFunction |
improve signal-to-noise ratio
ⓘ
reduce tape hiss ⓘ |
| processingMethod | multi-band compression and expansion ⓘ |
| relatedTo |
Dolby B
ⓘ
Dolby C ⓘ |
| requires | matching encoder and decoder ⓘ |
| status | largely obsolete ⓘ |
| supersededBy |
Dolby S
ⓘ
Dolby SR ⓘ |
| targetUsers |
film sound mixers
ⓘ
recording engineers ⓘ |
| typicalFormat | outboard rack-mounted unit ⓘ |
| use |
broadcast audio
ⓘ
film sound production ⓘ professional analog recording ⓘ |
| usedOn |
film magnetic dubbers
ⓘ
professional multitrack recorders ⓘ stereo mixdown recorders ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Dolby Type A