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I have to make ear testing app like Audiogram. I have to calibrate headphone at specific frequency and volume. I have to generate beep tone at specific frequency and volume and output volume of sound should be same of headphone. Could you please anyone help me?

  • A simple search on stackoverflow or google will give you many results. http://stackoverflow.com/search?q=iOS+tone+generator Setting the volume and and frequency are pretty trivial. – jaybers Jan 18 '16 at 06:16
  • Possible duplicate of [Play Beep Sound in iphone Related to the Frequency & Decibels](http://stackoverflow.com/questions/10943896/play-beep-sound-in-iphone-related-to-the-frequency-decibels) – jaybers Jan 18 '16 at 06:18

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