Ray Peat Interview KMUD: 3-20-2020 Coronavirus

meatbag

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:thankyoublue
 

StephanF

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At 44:43 - 45:13, Ray mentioned something interesting:

"A man in Italy about a week ago, emailed me about his friend with confirmed, uh, Corona virus. Uh, and the, I mentioned the Chinese, uh, recommendations to him. He rushed out and got a Losartan prescription. Then the next day, he said his friend was up and out of bed and feeling good. And today I got an email from him saying that not 'just good': he feels like he has new lungs."

I filtered the annoying background noise from Dr. Ray Peat's radio interview, essentially harmonics of 120 Hz up into the 3 kHz range, in Adobe Audition.

Enjoy!
 

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Fred

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At 44:43 - 45:13, Ray mentioned something interesting:

I filtered the annoying background noise from Dr. Ray Peat's radio interview, essentially harmonics of 120 Hz up into the 3 kHz range, in Adobe Audition.

Enjoy!

Thanks Stephan. Sounds much better. And now if I may look a gift horse in the mouth ... the only issue is that the overall level is much lower. I used wavepad to "normalize" the clip so that the peaks are at max level. It's a one-click solution on WavePad. Never tried Adobe, so I don't know if there's a similar feature.
Also, I'm curious ... what EQ settings did you use to remove the hum? Is this multiple super-narrow-band dips of 120Hz and octaves above (i.e. 240Hz, 480Hz, etc)?
 
J

jb116

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Thanks Stephan. Sounds much better. And now if I may look a gift horse in the mouth ... the only issue is that the overall level is much lower. I used wavepad to "normalize" the clip so that the peaks are at max level. It's a one-click solution on WavePad. Never tried Adobe, so I don't know if there's a similar feature.
Also, I'm curious ... what EQ settings did you use to remove the hum? Is this multiple super-narrow-band dips of 120Hz and octaves above (i.e. 240Hz, 480Hz, etc)?
I don't think it's simple notch bands, that would create pretty poor, phasey sounding audio. Most likely spectral editing in Audition.
 

StephanF

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I don't think it's simple notch bands, that would create pretty poor, phasey sounding audio. Most likely spectral editing in Audition.
The simplest was a 1/120 s delay to a phase inverted copy of the audio and then sum them up (a 'comb filter'). All the 120 Hz signals disappeared but then, of course, I got an 8.33 ms echo! So I used about 30 notch filters to get into the 3 kHz range, that did it. I should have checked the sound level though...

So here is the normalized volume level audio file!
 

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  • kmud-200320-coronavirus-NR-Norm.mp3
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Fred

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The simplest was a 1/120 s delay to a phase inverted copy of the audio and then sum them up (a 'comb filter'). All the 120 Hz signals disappeared but then, of course, I got an 8.33 ms echo! So I used about 30 notch filters to get into the 3 kHz range, that did it. I should have checked the sound level though...

Man, that's amazing. I'm in the stone age with my parametric EQ. Thanks for posting it up here!!!!
 

StephanF

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Man, that's amazing. I'm in the stone age with my parametric EQ. Thanks for posting it up here!!!!

Here are a couple of Adobe Audition screenshots!

upload_2020-4-6_21-13-52.png

upload_2020-4-6_21-15-31.png

Six of those filter sets did it (so actually a total of 36)! Probably some ground loop in the telephone conference recording introduced this nasty signal. It started at 240 Hz and went all the way up to around 3 kHz, then there were additional harmonics of 1 kHz up to 6 kHz, which I also killed...

Regards, Stephan
 

Fred

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Cool. So it looks like there's a notch at every octave and 5th. I'll have to remember that. Hum seems to be a common plague.
 
J

jb116

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The simplest was a 1/120 s delay to a phase inverted copy of the audio and then sum them up (a 'comb filter'). All the 120 Hz signals disappeared but then, of course, I got an 8.33 ms echo! So I used about 30 notch filters to get into the 3 kHz range, that did it. I should have checked the sound level though...

So here is the normalized volume level audio file!
But you used the spectral editor, yes?
 

Fred

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Me too. Ray is talking in the last interview and a flute just starts playing mid-sentence.
 
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