title: Does an Audio Unit with kAudioUnitType_Output and kAudioUnitSubType_RemoteIO use a low cut filter by default?
body: <p>I'm developing an app that sets an audio unit to record and play and use a callback for audio processing. I was testing the record and play functionality without the callback so I measured the signal with a software called smaart I send as input a pink noise and analyze the output and I observe a drop down behind 200 Hz that seems like a filter. I don't know if I setting wrong something in my Audio Unit or this filter is applied by default. I tried using the same configuration but with a kAudioUnitSubType_VoiceProcessingIO and this sub category has various filters and a anti howling applied so it seems possible that the kAudioUnitSubType_RemoteIO applies filters by default too. </p>
  
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