---
title: timeSinceAudioStart
framework: sensorkit
role: symbol
role_heading: Instance Property
path: sensorkit/srspeechmetrics/timesinceaudiostart
---

# timeSinceAudioStart

The number of seconds since the start of the audio stream.

## Declaration

```swift
var timeSinceAudioStart: TimeInterval { get }
```

## Discussion

Discussion When an audio stream starts, such as a phone call, SensorKit collects samples periodically. Use this field to determine the order of the samples in the audio stream.

## See Also

### Getting session information

- [sessionIdentifier](sensorkit/srspeechmetrics/sessionidentifier.md)
- [sessionFlags](sensorkit/srspeechmetrics/sessionflags-swift.property.md)
- [SRSpeechMetrics.SessionFlags](sensorkit/srspeechmetrics/sessionflags-swift.struct.md)
- [timestamp](sensorkit/srspeechmetrics/timestamp.md)