Dropouts when recording improvements

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kozikowski
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Re: Dropouts when recording improvements

Post by kozikowski » Wed Oct 14, 2020 8:52 pm

Maybe a senior elf will drop by and explain it.

Alternately we may be looking at the problem. It's supposed to make a difference and yours doesn't work.

And now for the darker side. If we haven't hit something by now, there may be no solution.

Koz

kozikowski
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Re: Dropouts when recording improvements

Post by kozikowski » Wed Oct 14, 2020 9:02 pm

There is this from the wiki.

https://manual.audacityteam.org/man/faq ... html#skips

"On some Macs, the buffer may need to be reduced to zero."

Koz

MrRecordMan
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Re: Dropouts when recording improvements

Post by MrRecordMan » Wed Oct 14, 2020 9:21 pm

Thanks again Koz, I really appreciate your diligence, knowledge and kindness trying to solve this.

Buffer length having no effect is indeed strange.

I am going to try a power conditioner I have in another rack and see if that helps. If I can go a day without a glitch, I'll consider that an improvement.

MrRecordMan
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Re: Dropouts when recording improvements

Post by MrRecordMan » Wed Oct 14, 2020 9:35 pm

Could you shed a little more light on the type of memory thing though? If I could find better / more appropriate memory, I would look for that.

If you have a link, I'd really appreciate it.

kozikowski
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Re: Dropouts when recording improvements

Post by kozikowski » Wed Oct 14, 2020 10:13 pm

We're looking for broken memory. You shuffled across the rug and didn't discharge yourself while you were installing the strips, or even got broken memory out of the static package. Not likely, but it does happen. You wear a wrist strap while you're in surgery, right?

The checker applies different patterns of data to the strips and looks at what comes back. Simple as that. If they don't match, it rings bells. There is one trick to this in that the operating system should take up as little memory as possible so to check as much as possible. The floppy trick ran the whole thing in DOS, so the OS and the whole environment fit in 1.44MB. The machine I'm typing on right now has a kernel_task taking up 700MB, so that's the amount that the checker doesn't have access to.

Chances are if your checker didn't turn up anything by now, it's fine.

Koz

kozikowski
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Re: Dropouts when recording improvements

Post by kozikowski » Wed Oct 14, 2020 10:21 pm

an old Mojave machine
While you were in there, did you turn up a watch battery?

I wonder how they do time and date now? Is that why the main battery no longer comes out?

Koz

MrRecordMan
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Re: Dropouts when recording improvements

Post by MrRecordMan » Thu Oct 15, 2020 5:53 am

kozikowski wrote:
Wed Oct 14, 2020 10:21 pm
an old Mojave machine
While you were in there, did you turn up a watch battery?

I wonder how they do time and date now? Is that why the main battery no longer comes out?

Koz
I didn't have to dig too deep to replace the hard drive and memory, so I might have missed a watch battery if there was one there. The main battery is still removable in this model.

steve
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Re: Dropouts when recording improvements

Post by steve » Thu Oct 15, 2020 8:54 am

This is quite a long thread so I may have missed it, but have you posted an audio clip demonstrating the problem?
If not, please post a short WAV file (just a few seconds) to illustrate the problem.

(This may not tell us anything new, but the normal approach to this problem is not workings, so perhaps we are overlooking something)
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

MrRecordMan
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Re: Dropouts when recording improvements

Post by MrRecordMan » Tue Dec 08, 2020 9:09 pm

Just a small follow-up here.

I have everything connected to a power conditioner, and I still get completely silent drop-outs here and there that do not triggere Audacity's 'dropout detection'.

I also still can't see any effect in changing the buffer size.

As of now I'm going to chalk this up to some hardware defect somewhere - either computer or interface (an expensive mixer).

Disappointed, but undeterred, I continue to rip and manually correct these glitches.

kozikowski
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Re: Dropouts when recording improvements

Post by kozikowski » Tue Dec 08, 2020 11:21 pm

computer or interface (an expensive mixer).
Just reading that over again. We know nothing about the mixer and the connection to the computer. I don't expect the USB connection to be failing, that usually gives Audacity a "stuck" cursor as the bitstream stutters or misses a beat, but yours is the exact symptom you could get if somebody "killed the key" on the mixer for a split second. It's upstream from the A/D converter, so the stream would just keep right on trucking, but the show would be silent, and it would be missing for the right amount of time.

How to test.

Ummmmm.

This doesn't have to be Nashville Quality, but do you have an independent way to record the speaker, Control Room, or house feed from the mixer while you're making a dub? Wouldn't it be special if the house feed had a hole in it at the exact point the Audacity feed dropped dead?

Koz

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