Audacity Forum

And then again from the black arrow menu, Make Stereo Track.

I left that out.

Koz

<<<1. Normalize both channels separately, so that they both have 0dB peaks.>>> You can't do that with phonograph record captures. The cat hair pops mess you up and also makes it impossible to be reliable from record to record. Split the stereo show with the little drop-down menu from the black arrow...

Step one, stop using Audacity 1.2. 1.2 is not supported on newer Macs. Get Audacity 1.3.12 from here. http://audacityteam.org/download/beta_mac You can leave the old Audacity installed. Change Audacity preferences to 48000, 16-bit, Stereo from 44100, 32-bit, Stereo. Restart Audacity to make sure the...

Manually is recommended because the automatic tools can get freaked out by cat hairs on the record. The manual process can be applied right after one side is captured -- to the whole record side. It's pretty harmless and should not mess up any other tools.

Koz

You can apply Effect> Normalize to the show. Amplify and Normalize do about the same thing -- adjust overall sound level, but Normalize does it to each track individually. Alternately, you can do it manually by splitting the stereo show into two separate tracks with the tools under the black arrow o...

The tone center is 1771. I'd love to say I'm just really good that way, but in fact I used the analyzer. Select some of that noise-only, voice-free segment after "Giddy." Analyze > Plot Spectrum. Size 8192, Log Frequency, Pull the display as large as you can. Move the cursor close to that ...

I'm pleased to say this is almost the perfect show for these tools. The tone is very low already and would vanish with a little gentle, graceful help. Contrast that with a more normal poster trying to dig a voice out of much louder audio garbage. You are sweetening an audio track. They are creating ...

I've never used this filter, but if it has an amplitude or depth control, set it for the minimum needed to suppress the tone and avoid damaging the show. For example, if it's already -40 or so, another 20 will take it to 60 which is just about inaudible. You can also try the noise removal tool and l...

You may win. It's very low and it does appear to be a single tone. 1753 or 1771 depending on which instrument you believe. Notch filter each one and see if it goes away.

http://audacityteam.org/download/nyquistplugins
About 2/3 of the way down.

Koz

Record and Playback use different pathways -- unless you intentionally cross them with "Mix-Out" or a service like that. There are a number of electrical component failures that can cause that, but I've never seen dust do it. Also, it's not unusual to have a little bit of that -- enough to...