---
title: PHASESpatialPipelineEntry
framework: phase
role: symbol
role_heading: Class
path: phase/phasespatialpipelineentry
---

# PHASESpatialPipelineEntry

An audio layer with an adjustable volume for a spatial mixer’s output.

## Declaration

```swift
class PHASESpatialPipelineEntry
```

## Overview

Overview This property adjusts the amount of audio that passes through a spatial mixer’s pipeline (spatialPipeline) to the output. The pipeline’s entries contains an instance of this class for each type of audio layer that PHASESpatialCategory defines. Depending on the layer’s type, the audio may sound like spatial relections, environmental reverb, or the unfiltered signal. An app adjusts the layer’s presence in the mixer’s output by: Defining an initial volume using sendLevel Adjusting the audio’s volume dynamically, for example, by fading it over a duration using sendLevelMetaParameterDefinition

## Topics

### Setting the Send Level

- [sendLevel](phase/phasespatialpipelineentry/sendlevel.md)

### Fading the Send Level

- [sendLevelMetaParameterDefinition](phase/phasespatialpipelineentry/sendlevelmetaparameterdefinition.md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Sound Reflections and Resonance

- [PHASESpatialPipeline](phase/phasespatialpipeline.md)
- [PHASESpatialCategory](phase/phasespatialcategory.md)
- [PHASESpatialPipeline.Flags](phase/phasespatialpipeline/flags-swift.struct.md)