Author Topic: First YouTube video - adjusting the FET bias of a condenser microphone  (Read 4525 times)

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Offline KeicarTopic starter

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G'day everyone - here's a gratuitous plug for my first YouTube video, which might be of interest to folks that are into pro audio.

https://youtu.be/SHD4Rrwqy_Q

Constructive criticism definitely welcome - I'm learning just how difficult it is to do this stuff well.

Cheers,

Karl.

 
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Offline Brumby

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #1 on: August 01, 2016, 04:27:52 am »
Good first effort.

Your framing and focus was good.  Lighting on the close-up was excellent.  Wide shot lighting was OK, but I might have made things a tiny bit brighter (not a big issue).  (Just re-watched .. and it was more the background that I was noticing - so not something to worry about.)

Shots of scope and SA were certainly clear enough for the purpose.  If I were to say they weren't as crisp as I might prefer, I'd be being a bit picky and a little disrespectful of the CRT displays.  (We get digitally spoiled too much.)

Audio was also quite good (but somehow that did not come as much of a surprise).  Vocal clarity was more than adequate.  The only criticism would be a few too many 'Ums' and 'Ahs' - but that will be a matter of building up a level of confidence - which will come with time.

The only thing that I did find a little 'indistinct' was the discussion using the circuit diagram.  Three things here:
* The Sharpie is just too big to indicate accurately and covers too much of the diagram.  I'd suggest a pen or a pointer.
* Second, it seemed to be 'waving in the air' on a few occasions, not pointing to anything in particular - with the dialogue being similarly non specific.  I felt this detracted from the clarity - but that may just be me.
* I felt that a couple of notes made on the circuit diagram - like arrows, voltages or whatever - could have helped at a couple of points.  Perhaps make a sacrificial copy - or take up the recently introduced DaveCad feature of a clear plastic sheet in front and use a fine whiteboard marker.  (Just a thought.)

The image resolution was a little on the low side - but again, we do get digitally spoiled.  I daresay this could be addressed by a better camera - but such an expense is probably going to be something to look at a bit further down the track.


Remember .... this is just my off-the-cuff opinion.  Don't lose any sleep over it.

Bottom line:  Loved the subject matter - and encourage you to do more!
« Last Edit: August 01, 2016, 04:33:23 am by Brumby »
 
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Offline Brumby

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #2 on: August 01, 2016, 04:34:59 am »
Some other points...

White balance
Reflections

I didn't mention these - because I didn't notice them....  Well done.
 
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Offline LA7SJA

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #3 on: August 01, 2016, 02:08:32 pm »
Awesome video, with meaningful explanations and comments. I look forward to your next video.

Johan-Fredrik
"If at first you don't succeed, skydiving is probably not for you"
 
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Offline GEuser

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #4 on: August 01, 2016, 03:29:33 pm »
Can you watch your video again and count how many times you said Umm and similar sounds , then count the total amount of words used/spoken and see whats left over in numbers .

That's the only thing i noticed in the video that was not required on a good subject imo .

Off topic , but i hear the same habit (that's what it is and fixable?) on the Ham bands and shortwave sometimes , some have it so bad that it would be 50% or more of the content heard Umm , Umm and then i flick the VFO or Channel selector , I've learnt ..

You did ask , didn't you .
Soon
 
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Offline KeicarTopic starter

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #5 on: October 24, 2016, 12:07:39 am »
G'day All,

Well, I've pressed on and done a couple more - I've decided to do a series on a DIY mic preamp design I've been working on. Not sure if my presentation is getting any better, but I'm trying (and editing out the 'um's & other hesitations where I can).

DIY microphone preamp project - VU meter driver
https://youtu.be/6WDvXofWE8k

DIY mic preamp - VU meter driver demonstration
https://youtu.be/jESL__AXLXU

It's probably a bit "spammy" to plug each & every video, but it's so hard to find an audience when you're starting out. Hopefully some folks will find this of interest to them.

Cheers,

Karl.
 

Offline KeicarTopic starter

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #6 on: November 14, 2016, 01:29:41 am »
Well, I tried to build some sense of drama by doing my very first power-up of a new project on camera:

https://youtu.be/0N_bnFs1U6g

Let's just say the end result wasn't exactly edge-of-the-seat thrills (which is probably a good thing).

Cheers,

Karl.
 

Offline KeicarTopic starter

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #7 on: November 27, 2016, 11:29:23 pm »
Somewhat inconclusive re: adjusting the negative impedance converter - but looking very promising indeed:

https://youtu.be/TVCfhFe1ozA

Cheers,

Karl.
 

Offline KeicarTopic starter

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #8 on: December 03, 2016, 09:27:20 pm »
Perhaps not entirely conclusive - but time to move on, I think...

https://youtu.be/zD_xFV6EJXk

Cheers,

Karl.
 
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Offline KeicarTopic starter

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #9 on: October 01, 2017, 10:36:27 am »
It's been a while, but finally there's another installment...

https://youtu.be/C2sm9CGrXS4

Cheers,

Karl.
 

Offline KeicarTopic starter

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Re: First YouTube video - adjusting the FET bias of a condenser microphone
« Reply #10 on: October 08, 2017, 01:48:06 am »
Alas there were a couple of 'issues' with my panel layout <sigh>:

https://youtu.be/-bYFd_Z_iqk

Cheers,

Karl.
 


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