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README.md

audio-degapinator

The poor developer's "Smart Speed"

AVAudioPlayer offers features for audio level metering:

/* metering */
    
open var isMeteringEnabled: Bool /* turns level metering on or off. default is off. */

open func updateMeters() /* call to refresh meter values */

open func peakPower(forChannel channelNumber: Int) -> Float /* returns peak power in decibels for a given channel */

open func averagePower(forChannel channelNumber: Int) -> Float /* returns average power in decibels for a given channel */

And for adjusting playback, including:

open var rate: Float /* See enableRate. The playback rate for the sound. 1.0 is normal, 0.5 is half speed, 2.0 is double speed. */

This code:

  • turns metering on
  • updates meters with a timer
  • checks if there is currently silence playing using averagePower
    • increases the playback rate 2x until the silence ends

I tested using episode 220 of ATP and Debug episode 49. In both cases the silences were noticeably reduced and, to my ear, sounded completely natural. I listened to the entire episode of Debug and it had shaved off a little over 3 minutes by the end.

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