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I made a mistake while setting an EQ filter while listening to music and would like some advice.

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Jegan
2021-08-12
2021-08-14

  • Jegan

    Jegan - 2021-08-12

    I have a pair of sennheiser hd800s and I was setting up EQ while listening to music on them. I was trying to test for changes in sound while the audio was playing. I accidentally set a peaking filter to have positive gain on 40000 hz instead of 4000 hz. The graph at the bottom went almost fully red, and I heard a clicking noise in the headphones as playback stopped. Does APO have some kind of auto shutoff feature (hence the clicking noise and stoppage of playback) or did I permanently damage my headphones? I don't think I hear anything different through them, but I don't know if something is awry in very high frequencies either. It might just be my anxiety talking but I wanted to clarify this.

     

    • Juha

      Juha - 2021-08-13

      IIRC, this issue has been discussed here couple times already.

      When your filter goes above certain cutoff frequency (commonly it is samplerate / 2) filter implementation (RBJ' take on BLT) used in EqualizerAPO just breaks.

      Analyzer panel shows your EqualizerAPO filter configuration output gain and has nothing to do with real playback level. Besides, Windows actually has a build-in limiter so that the output level should not even exceed (1.0) 0dB, which is the maximum output level.

       

      • Jegan

        Jegan - 2021-08-13

        So basically, even if my filter did have a viable sampling rate, windows would have bailed me out anyways. Therefore, I didn't break my headphones or expose myself to an ultrasonic frequency spectrum. Thanks for the info dude. I was having a lot of anxiety about this lol.
        "Windows actually has a build-in limiter so that the output level should not even exceed (1.0) 0dB, which is the maximum output level." Is this referring to 1.0 x whatever the maximum output level of APO is?

         

        Last edit: Jegan 2021-08-13

        • Juha

          Juha - 2021-08-14

          Is this referring to 1.0 x whatever the maximum output level of APO is?

          Maybe not that simple.
          If you're interested in Windows audio system, MS has quite good documentation to start with available @ https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/

           

          • Jegan

            Jegan - 2021-08-14

            Thanks! I'll read into that. I guess based on what you originally said though, I can stop worrying that I broke anything in my gear by accidentally setting to 40k hz while listening to audio.

             

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