---
title: Audio Session Category Route Overrides
framework: audiotoolbox
role: collectionGroup
role_heading: API Collection
path: audiotoolbox/1618372-audio-session-category-route-ove
---

# Audio Session Category Route Overrides

Specifies whether the default audio route for the PlayAndRecord category should be overridden.

## Overview

Overview The kAudioSessionCategory_PlayAndRecord category supports simultaneous input and output. You could use this category, for example, to add an effect to audio coming into the device’s microphone. By default, output audio for this category goes to the receiver—the speaker you hold to your ear when on a phone call. The kAudioSessionOverrideAudioRoute_Speaker constant lets you direct the output audio to the speaker situated at the bottom of the phone.

## Topics

### Constants

- [kAudioSessionOverrideAudioRoute_None](audiotoolbox/kaudiosessionoverrideaudioroute_none.md)
- [kAudioSessionOverrideAudioRoute_Speaker](audiotoolbox/kaudiosessionoverrideaudioroute_speaker.md)

## See Also

### Audio Session Support

- [Audio Session Property Identifiers](audiotoolbox/1618455-audio-session-property-identifie.md)
- [Audio Session Categories](audiotoolbox/1618427-audio-session-categories.md)
- [Audio Session Modes](audiotoolbox/1618405-audio-session-modes.md)
- [Audio Session Activation Flags](audiotoolbox/1618357-audio-session-activation-flags.md)
- [Audio Session Interruption States](audiotoolbox/1618425-audio-session-interruption-state.md)
- [AudioSessionInterruptionType](audiotoolbox/audiosessioninterruptiontype.md)