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Vivox Core SDK

Vivox Core SDK

Vivox
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Vivox Core SDK
  • Overview
  • Before you begin
  • Get started
  • Release notes
  • Developer Guide
    • Client SDK basics
    • Channels
    • Presence management
    • Messaging
    • Manage audio
    • Couch co-op
    • Android app development
    • iOS app development
      • Required Info.plist settings for iOS apps
      • Acoustic echo cancellation
      • Initialize the AVAudioSession on app startup
      • AVAudioSessionModeVoiceChat
      • Disable the Vivox SDK internal AEC
      • iOS known limitations
        • Cannot set iOS device volume to 0 when Voice-Processing I/O unit is active
        • The iOS microphone recording indicator
        • AVAudioPlayer volume inconsistencies
        • Volume shifts
        • Restore audio volume
    • macOS app development
    • Windows app development
    • Real-time recording
    • Speech-to-text audio transcription
    • Text-to-speech
    • Troubleshooting
  • Reference
  • Privacy overview
  1. Vivox Core SDK documentation
  3. iOS app development

AVAudioPlayer volume inconsistencies

Learn how to resolve volume inconsistencies with AVAudioPlayer.
Read time 1 minute
Last updated 8 months ago
If your app uses AVAudioPlayer, you must call prepareToPlay() before the Vivox SDK uses the microphone. If prepareToPlay() is called while the Vivox SDK is using the microphone, the audio for that instance of the AVAudioPlayer will be at a lower volume. For more information, refer to the Apple developer documentation on prepareToPlay().
This behavior can also occur when recovering from an audio interruption. For a workaround, see Restore audio volume.
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