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Re: Biquadratic really loud?
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Re: Biquadratic really loud?


  • Subject: Re: Biquadratic really loud?
  • From: james mccartney <email@hidden>
  • Date: Tue, 23 Oct 2007 11:11:05 -0700


guesses: you made a mistake in the implementation you have a numerical or precision problem in your implementation you have a high Q and some signal at the resonant peak.

On Oct 23, 2007, at 11:03 AM, Kevin Dixon wrote:
I have a low pass filter implemented using biquadratic algorithim
described at  http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt
However, when I have my cut off frequency much below 2kHz, the output
starts to get really loud (seemingly above 0dB on the AULab meters).

Any guesses?

-Kevin Dixon


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References: 
 >Using MIDISend/MIDISendSysex for Line 6 USB Device (From: "Boyd Timothy" <email@hidden>)
 >Re: Using MIDISend/MIDISendSysex for Line 6 USB Device (From: Kurt Revis <email@hidden>)
 >Re: Using MIDISend/MIDISendSysex for Line 6 USB Device (From: "Boyd Timothy" <email@hidden>)
 >Re: Using MIDISend/MIDISendSysex for Line 6 USB Device (From: Kurt Revis <email@hidden>)
 >Re: Using MIDISend/MIDISendSysex for Line 6 USB Device (From: "Boyd Timothy" <email@hidden>)
 >Re: Using MIDISend/MIDISendSysex for Line 6 USB Device (From: "Boyd Timothy" <email@hidden>)
 >Filter algorithims (From: "Kevin Dixon" <email@hidden>)
 >Biquadratic really loud? (From: "Kevin Dixon" <email@hidden>)

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