Audacity Glitching - stops and starts recording - HELP!

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Audacity Glitching - stops and starts recording - HELP!

Permanent link to this post Posted by vasline1 » Wed Jul 05, 2017 6:36 am

Hi,

I am using Audacity 2.1.2 on my MacBook Pro running OS X Yosemite 10.10.4. I am using a Blue Yeti as my microphone.

I was recording audio for roughly 1 hour and when I went to sync the audio with my footage I noticed that after 10-15 minutes Audacity would "stop and start" recording. More specifically, I would be telling a story and after 10 minutes I would hear something I said at the 10:20 mark (20 seconds of missing audio). Then everything would be okay until 20 or 30 seconds later, where the audio file jumps 40 seconds ahead (missing 40 seconds of audio). This is extremely frustrating.

Is this problem due to my long recording times? I only notice this problem when my recordings are over 15 minutes.

As well, one solution I found might be because I didn't set my default sample rate and sample format correctly. My sample rate was 44100 Hz and sample format was 32-bit but on the Blue Yeti website it says the microphone is 48 kHz and 16-bit. Do you think that is the problem?

Thanks!
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Re: Audacity Glitching - stops and starts recording - HELP!

Permanent link to this post Posted by steve » Wed Jul 05, 2017 12:40 pm

The sample format should be 32-bit float. This gives the best quality editing / processing and should have no effect on recording.
Worth trying the sample rate at 48000 to see if that fixes the problem.
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Re: Audacity Glitching - stops and starts recording - HELP!

Permanent link to this post Posted by Gale Andrews » Mon Jul 10, 2017 12:45 pm

Have you disabled Apple App Nap for Audacity and tried AntiPop?
http://manual.audacityteam.org/man/faq_recording_troubleshooting.html#mac_crackle ?


Gale


vasline1 wrote:Hi,

I am using Audacity 2.1.2 on my MacBook Pro running OS X Yosemite 10.10.4. I am using a Blue Yeti as my microphone.

I was recording audio for roughly 1 hour and when I went to sync the audio with my footage I noticed that after 10-15 minutes Audacity would "stop and start" recording. More specifically, I would be telling a story and after 10 minutes I would hear something I said at the 10:20 mark (20 seconds of missing audio). Then everything would be okay until 20 or 30 seconds later, where the audio file jumps 40 seconds ahead (missing 40 seconds of audio). This is extremely frustrating.

Is this problem due to my long recording times? I only notice this problem when my recordings are over 15 minutes.

As well, one solution I found might be because I didn't set my default sample rate and sample format correctly. My sample rate was 44100 Hz and sample format was 32-bit but on the Blue Yeti website it says the microphone is 48 kHz and 16-bit. Do you think that is the problem?

Thanks!
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Re: Audacity Glitching - stops and starts recording - HELP!

Permanent link to this post Posted by kozikowski » Mon Jul 10, 2017 5:09 pm

Have you disabled Apple App Nap for Audacity and tried AntiPop?

OK, that's scary.
Audio to Buffer" in increments of 10 milliseconds until recording is smooth.

Is there are definitive test for that? Like if you make it past xxx minutes, you're probably OK? Using sampling theory, shouldn't you work from both ends toward the middle? 10 > 90 > 20 > 80...

There's an opportunity for a product. A tiny device that clips to the microphone and adds a low-volume 15000Hz pure tone to your readings. It then analyzes the recording and automatically makes the above corrections if it finds damage. You're clear to make hero recordings when you get the acceptance message.

[A-OK!!].

Since PilotTone® never goes away, it's possible it could actually prevent some of these auto shutdown errors.

Koz
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