• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: iPhone, iPad sampling rates
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: iPhone, iPad sampling rates


  • Subject: Re: iPhone, iPad sampling rates
  • From: Raphaël - Mancing Dolecules <email@hidden>
  • Date: Thu, 12 Aug 2010 01:09:58 +0200

Interesting note indeed.

As third-party apps are now allowed to run audio in the background, thanks to iOS 4, I would bet that the behavior you noticed with the iPod app would be reproduced with some other "audio backgrounding" app. Possibly with different sample rate than 44.1 kHz, depending on, and if, they have setted their
own kAudioSessionProperty_PreferredHardwareSampleRate.

Pandora, Spotify or music creation apps like ThumbJam, which is very likely to use
kAudioSessionProperty_PreferredHardwareSampleRate, could be used for testing this.

Regarding the 44.1 kHz of the music player, if it can be something else, it would probably be the sampling rate of the played file itself. So feeding your iPod Touch with audio files with various sampling rates would be a good start point for testing, assuming there is no resampling/transcoding in the sync process.
 _______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden

  • Follow-Ups:
    • RE: iPhone, iPad sampling rates
      • From: Stéphane Beauchemin <email@hidden>
References: 
 >Re: iPhone, iPad sampling rates (From: Raphaël - Mancing Dolecules <email@hidden>)

  • Prev by Date: Re: Causes of paramErr (-50) in AudioUnitRender
  • Next by Date: Multichannel Mixer bus panning
  • Previous by thread: Re: iPhone, iPad sampling rates
  • Next by thread: RE: iPhone, iPad sampling rates
  • Index(es):
    • Date
    • Thread