---
title: SetDecibelValue
framework: VideoDriverKit
role: symbol
role_heading: Instance Method
platforms: [driverkit 27.0+]
path: videodriverkit/iouservideolevelcontrol/setdecibelvalue
---

# SetDecibelValue

Sets the current decibel level value.

## Declaration

```occ
kern_return_t SetDecibelValue(float in_decibel_value);
```

## Parameters

- `in_decibel_value`: Float decibel level value

## Discussion

Discussion Changing the decibel level value will send a notification to the host to update the object state if successful. The object’s work queue synchronizes access to the value.

## See Also

### Accessing the value

- [SetScalarValue](videodriverkit/iouservideolevelcontrol/setscalarvalue.md)
- [GetScalarValue](videodriverkit/iouservideolevelcontrol/getscalarvalue.md)
- [GetDecibelValue](videodriverkit/iouservideolevelcontrol/getdecibelvalue.md)