LP Rip with Distortion at the end of side one

[PGA]

@Gale Andrews:

As I understand it, we have to implement WASAPI support to get 24-bit recording on Windows, not merely update PortAudio.

In which version of Audacity is WASAPI incorporated?

It isn't yet: "we have to" - future tense!

[otwo_pipes]

Ooops!
Thanks for the update

[otwo_pipes]

@Steve:
On page one of this post you stated:-

Switching to the spectrogram view and zooming out a little (same selection):
firsttrack001.png
That red vertical bar shows the frequency representation of that glitch.
Now lets zoom out a bit further:
window000.png
Holy smoke Batman, there's hundreds of them.

Apologies for not being able to copy your pictures to insert here.
Unless I am very much mistaken your picture in the 'Holy smoke Batman' comment seems to be showing a time line at 43 minutes. This intrigues me becasue I uploaded just under 5 minutes of audio. Am I missing something here?

I have now had the time to produce a couple of spectrograms from the waveform I uploaded for you. Unfortunately my spectrograms have no similarity whatsoever to yours. Could you please explain what I may be doing wrong because, as you can see, my Audacity spectrograms shows no high frequency content whereas you state there are frequencies above 40kHz? From good engineering practice I have used a third party spectrum analyser tool. The similarity of the results between Audacity and the third party tool is remakable, which is only to be expected.

[steve]

your picture in the 'Holy smoke Batman' comment seems to be showing a time line at 43 minutes

The window shows from approximately 43.05 to 43.17 seconds.
The cursor is at 43.088 seconds.
To see the glitches you will need to zoom in a lot closer.

[otwo_pipes]

Steve: Thanks for clearing that up. It should have been obvious but I mis-read the timeline.
Unfortunately, that still has not helped with the differences betwixt your spectrograms and mine. Below is the spectrogram of the waveform I uploaded and as can be seen there are no glitches as you have shown. Either I am still doing something wrong or we are looking at the spectrograms of different waveforms. have you listed to the audio around 43 seconds because, in my waveform, there is no audible distortion at this area.
@otwo_pipes:

Problem: The audio file I have provided has significant distortion at times 29-34 seconds and 3:01 - 3:15.

If you can hear distortion at 43 seconds then maybe there was an error when you downloaded the file; maybe it would be worth downloading the file again.

[steve]

You're using a much larger "Window Size" for the spectrogram.

The larger the window size, the finer the frequency resolution, but the lower the time resolution. To see tiny glitches that are only one or two samples duration the window size needs to be quite small. In your image you'll notice that the resolution vertically (frequency) is much finer than on the image that I posted, but horizontally (time domain) the image is "smudged" whereas the image that I posted is quite "granular".

I'm downloading the audio file again now so that I can give you the actual window size for the image that I posted - it'll be somewhere around 128 judging by the scale. Sendspace seems to be a bit slow, so I'll write back in a short while when the download has finished.

To change the window size:
Edit > Preferences > Spectrograms

[steve]

Blimey, that took a long time.
It's finally finished downloading.

Yes, it looks like I was using a window size of 128.
You're using a much more "narrow band" setting, which obscures detail in the time domain.

[otwo_pipes]

Thanks, got there in the end