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Re: Volume automation with AVAudioPlayerNode (AVAudioMixing)?
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Re: Volume automation with AVAudioPlayerNode (AVAudioMixing)?

  • Subject: Re: Volume automation with AVAudioPlayerNode (AVAudioMixing)?
  • From: Mark Wise <email@hidden>
  • Date: Mon, 29 Dec 2014 11:45:23 -0600
Thanks for the quick reply, Matt. That's what I'm trying right now.  It just seems so high-level for such a low-level component. Have you noticed any distortion when doing quick fades?

Mark Wise
646.241.7126

On Mon, Dec 29, 2014 at 11:32 AM, Matt Hart <email@hidden> wrote:
I use a timer to fade in/out, changing the volume of the player. I adjust +/- .05 on .1 second increments.

On Dec 29, 2014, at 12:27 PM, Mark Wise <email@hidden> wrote:

> I am trying to smoothly fade in/out the output from a AVAudioPlayerNode that is connected to an AVAudioMixerNode. I can't figure out the best approach to smoothly ramp the player node's volume over time.
>
> I see that there's a 'setVolumeRampFromStartVolume:toEndVolume:timeRange' method in the AVMutableAudioMixInputParameters class that is basically exactly what I'm looking for. However, there doesn't seem to be a use for this with an AVAudioMixing-compliant node like the AVAudioPlayerNode connected to an AVAudioMixerNode.
>
> If I were using an audio unit, I could theoretically connect a MusicTrack in a MusicSequence and automate parameters with a MusicPlayer instance. However, the AVAudioPlayerNode isn't an audio unit, so no luck there.
>
> Has anyone successfully automated the pan/volume when using the AVAudioMixing components? It's such a low-level-feeling component that I figured parameter automation would be possible.
>
>
> Mark Wise
> 646.241.7126
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  • Follow-Ups:
    • Re: Volume automation with AVAudioPlayerNode (AVAudioMixing)?
      • From: Matt Hart <email@hidden>
References: 
 >Volume automation with AVAudioPlayerNode (AVAudioMixing)? (From: Mark Wise <email@hidden>)
 >Re: Volume automation with AVAudioPlayerNode (AVAudioMixing)? (From: Matt Hart <email@hidden>)

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