Search found 46624 matches

by kozikowski
Tue Jan 05, 2021 6:42 pm
Forum: macOS
Topic: Low level hum in background of recordings
Replies: 25
Views: 1059

Re: Low level hum in background of recordings

It's intermittent. Isn't that just the very best? Nobody wrote you can't have two or more problems, either. The first ACX Mastering tool, Filter Curve, is a rumble filter. It's job is to get rid of everything lower pitch than about 100Hz. Many home microphones produce rumble, thunder, and low pitch...
by kozikowski
Tue Jan 05, 2021 5:28 pm
Forum: macOS
Topic: Low level hum in background of recordings
Replies: 25
Views: 1059

Re: Low level hum in background of recordings

I'm using the ACX Audiobook testing and mastering because, in general, if you can pass that, you can submit anywhere else. Their standards pass broadcast proof of performance. You are warned to use all three Audiobook Mastering tools. Don't add any and don't leave any out. They clean up after each o...
by kozikowski
Tue Jan 05, 2021 5:24 pm
Forum: macOS
Topic: Low level hum in background of recordings
Replies: 25
Views: 1059

Re: Low level hum in background of recordings

You got it! There is no 90Hz hum in that sound file. I applied Audiobook Mastering and the file passes ACX Audiobook testing (but not by much). Screen Shot 2021-01-05 at 09.11.48.png You still need to find that noise. There's nothing more crazy-making than sound damage that comes and goes. I drag-se...
by kozikowski
Tue Jan 05, 2021 5:03 pm
Forum: macOS
Topic: Low level hum in background of recordings
Replies: 25
Views: 1059

Re: Low level hum in background of recordings

my money is on Intermodulation between 60Hz mains and 30Hz subharmonic In which case the metal-detector, sweeping the microphone across the room won't do anything. Tests with negative results still tell you stuff. It could be lights, too. Nobody actually dims LED lights. They finagle time-sharing a...
by kozikowski
Tue Jan 05, 2021 3:46 pm
Forum: macOS
Topic: Low level hum in background of recordings
Replies: 25
Views: 1059

Re: Low level hum in background of recordings

That's not wall power hum. That's 90Hz. I would have called computer fan. You know those pictures you see of people swinging metal detectors back and forth at the beach? Screen Shot 2021-01-05 at 07.37.42.png You can do that with your microphone. Aim it back and forth over your studio. You can set A...
by kozikowski
Tue Jan 05, 2021 9:07 am
Forum: Audacity 2.x Feedback and Reviews
Topic: Help a
Replies: 2
Views: 478

Re: Help a

Your post makes no sense to me.
Or me. I left rcsurfer an email to rejoin the forum.

Koz
by kozikowski
Tue Jan 05, 2021 3:10 am
Forum: Windows
Topic: lost aup files
Replies: 4
Views: 303

Re: lost aup files

Which Audacity? Help > about. Did you close Audacity after the last job and before you tried to open up a job? Open Audacity. Generate > Noise, and then Save a Project. Does that work? Do you get both parts of a Project? https://www.kozco.com/tech/audacity/pix/MyMusicAUP-MyMusic_DATA.jpg lost all of...
by kozikowski
Mon Jan 04, 2021 6:48 pm
Forum: Audacity 2.x Feedback and Reviews
Topic: Sound but no waves showing on horizontal line
Replies: 1
Views: 420

Re: Sound but no waves showing on horizontal line

ATR 2100-USB? Are you using it XLR/analog or through the USB connection? Are you actually recording your ATR 2100? Do a scratch test. Scratch the ATR 2100 and then scratch your laptop microphone and then anything else you have connected with a microphone such as a web cam. https://www.kozco.com/tech...
by kozikowski
Mon Jan 04, 2021 4:00 pm
Forum: Windows
Topic: Using audio interface, can't record while playing MP3
Replies: 5
Views: 368

Re: Using audio interface, can't record while playing MP3

We should also remember that whatever you choose, Windows has to support it. Audacity gets its sound from Windows, not the device, and Windows will not support silly or oddball sampling rates. If you find yourself choosing high sampling rates for extra good quality, see if 44100 works first, then go...
by kozikowski
Mon Jan 04, 2021 3:55 pm
Forum: Windows
Topic: Using audio interface, can't record while playing MP3
Replies: 5
Views: 368

Re: Using audio interface, can't record while playing MP3

Usually these are set at 44.1kHz or 48kHz. 44.1KHz is the audio CD sampling rate and is generally considered the default for home audio production. 48KHz is the video sound sampling rate. You might run into that if you're using a preamplifier or interface normally associated with video. I do voice ...