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# SNTimeDurationConstraint

Defines the time duration windows the request’s underlying sound classifier accepts with a range, or an array, of durations.

```
enum SNTimeDurationConstraint
```

## Topics

### Inspecting a Constraint

[`SNTimeDurationConstraint.durationRange(_:)`](/documentation/SoundAnalysis/SNTimeDurationConstraint-swift.enum/durationRange(_:))

A constraint that defines acceptable time window durations with a range.

[`SNTimeDurationConstraint.enumeratedDurations(_:)`](/documentation/SoundAnalysis/SNTimeDurationConstraint-swift.enum/enumeratedDurations(_:))

A constraint that defines acceptable time window durations in a discrete list.


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