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EQ advice

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moondust.and.solitude:
(see picture)

I'm working on transferring an old cassette recording of an FM radio broadcast. It sounds great except, for a lack of better wording, a "shrill" artifact. I'm not the best at EQ and looking for some advice. This is probably a simple fix, but I'm not able to dial it in yet. Looking for some sound advice (nice play on words there)  :bigsmile:

fireonshakedwnstreet:
Others will probably have more expert advice, but in Audacity I usually just highlight the offending peak and shrink it using Amplify (i.e. Amplify to a lower level) to bring it down to the level of the rest of the track. Have used this for some nasty vocals.

morst:
reduce treble above 15,750 with a low pass filter?
FM radio only goes to 16kHz anyhow, so that looks like it could be modulation nonsense

hoserama:
Looks like the pilot tone of 15.7khz from ntsc TV.

Just do a sharp EQ cut in a parametric eq, or notch filter.

morst:

--- Quote from: hoserama on October 18, 2020, 07:15:55 AM ---Looks like the pilot tone of 15.7khz from ntsc TV.
Just do a sharp EQ cut in a parametric eq, or notch filter.

--- End quote ---
steeper filter curve = more phase shift


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