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I just downloaded and tried this one on the iPad. The mic is working since I can see the graphics displayed in response to voices. But there was no playback from the speaker. Yes, I have tried both mute button on and off. Any hint as to what happened?

user523234
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1 Answers1

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I seem to remember there is some problem with pass-thru in that application, when I looked at it a few months back.

Try removing the DC filter.

I think it is a horrible piece of code, so forgive me for not digging into it.

I can't remember if it is just a simulator bug or whether it also hits the device.

P i
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  • According to aurioTouch's revision history on Apple website, that issue seemed to have been fixed with the current version. I have also tried to comment out these lines (197-199) in the aurioTouchAppDelegate.mm. But it did not fix the problem. // // Remove DC component // for(UInt32 i = 0; i < ioData->mNumberBuffers; ++i) // THIS->dcFilter[i].InplaceFilter((SInt32*)(ioData->mBuffers[i].mData), inNumberFrames, 1); – user523234 Jul 18 '11 at 15:53
  • What is it you are trying to do? There is not much benefit in using that code for anything. For the purposes of learning, it is horrible code. – P i Jul 18 '11 at 15:59
  • In another Apple's example called Wavy. It takes audio from the mic and plot a waveform on the screen. I am trying to learn how to get output from the mic and playback. In this Wavy example, there is a captureOutput delegate method that can return the CMSampleBufferRef... I was thinking to feed this sampleBuffer into some type of playback mehod. Can it be done this way? – user523234 Jul 18 '11 at 18:20