---
title: PHASECalibrationMode.relativeSpl
framework: phase
role: symbol
role_heading: Case
path: phase/phasecalibrationmode/relativespl
---

# PHASECalibrationMode.relativeSpl

A sound pressure level that’s tuned for the device.

## Declaration

```swift
case relativeSpl
```

## See Also

### Modes

- [PHASECalibrationMode.absoluteSpl](phase/phasecalibrationmode/absolutespl.md)
- [PHASECalibrationMode.none](phase/phasecalibrationmode/none.md)