Quote from ecomaniac on December 4, 2025, 5:28 pm

Good catch!

Quote from wow1968 on December 4, 2025, 7:14 pm

@squirrellydan: I got a comment in my spreadsheet that I should change the link to Mono. I rather add your information to "comment".
Can you confirm 100% that it's Booker Ervin - Structurally Sound? And is it mono or stereo?

Quote from ecomaniac on December 4, 2025, 7:30 pm

I can confirm he's correct.  I have the Sept 25 week 1 Booker Ervin rip and and this latter rip matches it.  However, I've analyzed both and it's not the same rip. I assume it's the same vinyl, but ripped using Patrick's newer lineage.  It is mono - just look at the file size.

Quote from squirrellydan on December 4, 2025, 9:01 pm

Quote from wow1968 on December 4, 2025, 7:14 pm

@squirrellydan: I got a comment in my spreadsheet that I should change the link to Mono. I rather add your information to "comment".
Can you confirm 100% that it's Booker Ervin - Structurally Sound? And is it mono or stereo?

That was my comment. Apologies for the confusion -- when I wrote that last night, I assumed it was just the wrong version. It wasn't until this morning when I wanted to compare a track against a YouTube version that I realized it was a completely different record.

You may know this already, but if you use macOS or Linux, you can use the "ffmpeg" program to confirm beyond doubt whether an audio track is stereo or mono:

ffmpeg -i [FILE] -filter_complex "stereotools=phasel=1" -ac 1 'output.wav'

This interpolates the left & right channels, outputting the result as a mono .wav file. If "output.wav" is totally silent, you have a mono track! To be completely thorough you could rewrite that into a bash for loop & generate spectrograms, but I haven't found that necessary.

Quote from ecomaniac on December 4, 2025, 9:39 pm

Quote from squirrellydan on December 4, 2025, 9:01 pm

You may know this already, but if you use macOS or Linux, you can use the "ffmpeg" program to confirm beyond doubt whether an audio track is stereo or mono:

I use Audacity in Windows and wrote a macro for checking mono but thought it simpler for @wow1968 to just note the zipped file size here is too small for stereo for most full length 24-96 albums.

Quote from wow1968 on December 5, 2025, 9:42 am

Thanks to you both. I have removed link for the Art Farmer rip, added a comment and highlighted it with orange.

btw...using Debian Linux

Quote from PB on June 30, 2026, 7:43 pm

RIP REMOVED