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EQ Anomaly in DSP Studio
dmitch77:
--- Quote from: wer on August 17, 2019, 12:18:07 am ---I would then try this: convert the flac to wav and try again.
If there's no hum, it's the file itself and not the actual waveform data.
If it DOES hum, try applying an equalizer to the wav in Audacity, or some other high quality editor.
--- End quote ---
Same problem with WAV. It's not a problem with the FLAC file.
I don't see what testing with Audacity would show that testing with the MC parametric EQ doesn't. I don't have Audacity here, it's too late tonight to install it and learn how to use it. Maybe someone else could give it a shot?
wer:
Someone tested with the EQ in VLC, the quality/reliability of which is suspect. Audacity is a good quality editor, and should behave reliably. The idea is to make a more persuasive argument.
mattkhan:
I tried it on windows, it seems like an obvious bug in the equaliser to me. It's not limited to 96kHz though you need need to bump the equaliser a bit higher at 48kHz to make it audible. It's definitely not due to the content of the track either (which you will be able to see via a spectral analysis of the track) as the fact that entering the same shape filter via PEQ does not produce the same artifact.
The artifact itself is also clearly visible in the analyser view btw.
It would probably be nice if they just got rid of the equaliser screen and converted it into a pretty front end for PEQ :)
@OP the equaliser is an octave band graphic equaliser (I believe) so using a PEQ with Q=1.414 at the specified frequency should have the same effect (but without the distortion)
blgentry:
Thanks mattkhan for saving me the effort of trying to replicate the 60 Hz EQ in the parametric. :) I suspected that it would produce the same results, but you say it does *not*. That definitely seems like a subtle bug.
Brian.
dmitch77:
--- Quote from: mattkhan on August 17, 2019, 05:45:23 am ---@OP the equaliser is an octave band graphic equaliser (I believe) so using a PEQ with Q=1.414 at the specified frequency should have the same effect (but without the distortion)
--- End quote ---
Good to know. Thanks for the info and for looking into this.
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