So what went wrong?

[@msingh1932]

I respect a man who admits to a mistake that no one would have noticed...and don't notice even after his detailed explanation. But, in the end, he is the Master.

[@mcpribs]

Mistakes are nothing more than opportunities to learn. Thank you for sharing to help others avoid the same outcome.

[@razisn]

I heard the hum on my headphones but for some reason I thought it was added in purpose as a sound effect for some reason I couldn't be bothered to think about. The fact that it was not there during the whole duration of the edited video but only on some scenes added to my impression.

[@ChrisCiapala]

This AKG mic is sounding abso-bloody amazing. I might not be fan of the looks but the sound is impeccable. And thanks for addressing a problem which apparently very few noticed.

[@s_r_v]

So I've just put my headphones on to hear the hum and like you I'm surprised you didn't hear it or even see it in mix 😉 BUT now I'm so distracted by your breathing sounds, I realise that it's probably a good idea for you to keep breathing, however it illustrates the downsides of having resolving equipment, no wonder audiophiles are so grumpy 😀

[@mariokrizan399]

Greetings from Argentina🙋‍♂️ You shouldn't apologize for anything, I imagine that at Abbey Road they continue to correct recording errors like in any professional studio. You have very good microphones that are eternal classics and the good thing about your Yamaha monitors is that they bring you closer to what the listener's listening would be like, through the media that we have in our homes, such as Smart TVs, tablets, computers, etc. Your videos are very good, although a little dizzying 😂😂 Greetings!

[@emiel333]

Respect for acknowledging your mistake.

[@maxtrue9744]

I believe NS-10 monitors were used to determine if the music would sound OK on bad speakers. Using them to edit with is a bit problematic. I would use them just to check that the bad speakers would somehow work with the mix. Everyone has their methodology and that is fine as long as the final results are what you want. I mix on Koss ESP 950 headphones and afterwords check on the various speakers I have access to.

[@ericquasney8832]

I agree. Swift and decisive discipline from Debbie and Betty is in order 🙉🙈🙊🐵

[@ericdere]

Did not notice it on my Focal Aria 936 speakers.

[@MajesticVoid]

Same here. I am now wondering, is that a bad thing?

[@rhodaborrocks1654]

I built my first record player in the late '60s, an old Garrard 4SP turntable, ECC82 and EL84 valves and it sounded really good too, compared to what my school mates had anyway. One day I was tinkering with it and my dad asked what I was doing and I replied that I was tracking down an annoying hum, he came up, sniffed it and told me there's something wrong with my nose, he can't smell anything !!

[@duncanbrode381]

David, (unsolicited positive feedack) although I am only listening on a Samsung S22 phone's internal speakers, but wow, this 414 , mic pre, distance, and angle you are using sounds absolutely fab on your voice segments! Bravo!❤

[@paulphilippart7395]

Wouldn't have heard that, had a guitar plugin open in Cubase, was taking a break and watching the insightful audio musings whilst curtailing my tracking activities.

[@bradwalker1259]

"Not going to happen" - famous last words! 😉 Cheers!

[@bahathir_]

Why not using SSD external drive? No mooving parts.

[@andrewdewar8159]

Daw ! [Thats audio engineer for Doh!]

[@djcata7474]

1:12 Plosive... OMG! Lucky I caught that on my 10000$ subwoofer car system. Doors and windows came off, car still runs.

[@andrewbrazier9664]

🎶🙃

[@nicc5122]

OK i'm curious now, what's wrong with microphone shock mounts?

[@DrBovdin]

Interesting, a mechanical vibration that coupled in rather than an electronic one. Easy to fix and I expect an interesting troubleshooting session to figure the source out. Good thing that it was such an odd frequency. Had it been a multiple of 50 Hz it would have been easy to jump to the wrong conclusions.

[@marxman00]

Any problem encountered and solved is a victory. Dont forget Audio files worship problems. We still love you

[@carminedambrosio7]

Ok, you publicly admitted this "very serious" carelessness with the microphone, but I think it takes at least 10 spankings from Debbie, and another 10 from Betty, to make it up to you!

[@michaelwright1602]

ANEN!

[@ac81017]

Don't forget Audiophile Phil 🙂

[@frogandspanner]

"That's not gonna happen" is 18 letters to say what can be said in 6!

[@stevengagnon4777]

Audio Phil with the the best equipment in the world didn't here that either... Shameful! Apparently his golden ears are not so golden. Ah well I didn't notice it either, but I was using the phone speakers. Maybe it's my age , definitely those "average" power amps turned up to "11" for five decades might be a factor.

[@joelcarson4602]

That was one thing about spinning discs, ramping up to speed, the various sounds the head servo made, at least let you know it was working. 😊

[@martineyles]

Perhaps you could put the audio through something that analyses the spectrum to find continuous tones.

[@isotoxin]

Somehow I thought the hum in video was on purpose 😅

[@duncan-rmi]

I once mic'd up a grand piano with a pair of 414s under the raised lid, for a pan european live tv show. I rented these things on the advice of the regular sound guy, who had the night off. "why haven't we got these things in our inventory?" I asked later... anyway, I thought they were in figure-8 mode, these things, & mindful of OfCom's rules about product placement, positioned them so that FX Rentals' giant logo was hidden. upside down. "they're not very bright, are they?" I thought, as I wound in some top on the ancient but venerable neve 50-series, only discovering my error the nest day when I mentioned this to the staffer. oh well.

[@AudioMasterclass]

This reminds me of the time when I was mixing on B&W 801s (not my own). The sound was extremely dull and I was about to try and brighten it up when the thought came to me to check the midrange/hf units under the hoods. Some joker had turned them around. DM

[@Unavintage]

If you have a set of different pro mics, you can use it in different videos just to show us if appropriated or not for speak.

[@weatherdevil9029]

You are aware that you don't actually *need* to explain yourself. Like bumping your mic, or looking at your notes? We can actually see what you are doing, and hear the bumps when you knock your mic now and then, but you don't have to point out the errors of your ways, simply ignore them and move on, that's what we're here for aren't we? Constructive criticism should be taken with a positive pinch ;o)

[@jeremythornton433]

Great video, again!

[@rabb1tjones921]

Job well done! I have to admit, I could not here the noise.

[@paullongtailpair3812]

It appear that the hardrive platters rotate at 5460 RPM

[@marxman00]

Not always

[@paullongtailpair3812]

i know.@@marxman00

[@AudioMasterclass]

Yes the spec says 5400. That's close enough for me. DM

[@Charlie-UK]

A 'hum' was evident, but micro-scrutinising content and nit-picking over every imperfection, could be regarded as bad manners. So I didn't think making a massive issue of it was worthwhile or warranted. As David is kind enough to not charge for his excellent content. Others obviously did...

[@nicoras8803]

David, kindly you equalise your microphone, there is too much chesty bass.

[@MarcelNL]

Yeah, that's not gonna happen, because in this video it wasn't a mistake! ;-)

[@MarcelNL]

Re-watching....wait, what? The buzzing and such at all sorts of low frequencies are gone! Okay I need to check in my house where that came from, haha!

[@LGODK]

Thank you for your reply to my comment, I unfortunately could not hear that it was 91Hz I picked by my earsan and it was 90Hz. I have been building amplifiers since 1959, tube amplifiers, Germanium transistor amplifiers, Silicon Based Class A amps etc... And if you are working with sound. scrap all rotary hard drives 5400, 7200 &10000 Rpm. They make a lot of humming noice. In my systems i Use Samsung 990 PRO SSD I never use headphones, I build my own system. The DAC is lates from ESS technologies = ES9038Q2M SABRE´32 Reference DAC I am working on a Class-D Compact Self ventilating Amplifier with no fans 220x140x50 mm. 2 X 250 watt RMS i 8 ohm right onn your desk. Powersuply : Gearbox +/- 200 volt frome Ice Power Class-D Amplification Module Delivered ICE Power Denmark

[@AudioMasterclass]

Thank you for your reply. My method of measurement was a little basic. I found a quiet patch in my video and measured ten cycles of hum in my DAW. A few taps on my calculator and it came to 91 Hz. I set my filter to this with a sharp notch and it sounded fine so that's as far as I went. DM

[@mickeystewart4504]

This man is a wealth of Audio knowledge, would want him to produce my album.

[@paulstubbs7678]

mmmmm maybe (as in a 91Hz mmmm)

[@robertsills2506]

Don’t become a politician you will fail miserably