Analyze music files to see if really hi-rez

[grinner]

I have a number of supposedly hi-rez music files purchased from various places that don't sound very hi-rez to me. Clicking command-I to get info just tells me it's an ALAC file. What I want to know know is the quality of data in the file - is it just a poor quality mp3 that's been resampled and put in an ALAC file format?

 

Are there any - preferably free - programs that will run on a Mac that will analyze these files? 

 

Best regards & stay safe. 

[Zooropean]

https://fakinthefunk.net/en/#download

[semente]

With Spek you can tell if they we're upsampled from 44.1kHz.

 

http://spek.cc/

[auricgoldfinger]

6 hours ago, semente said:

With Spek you can tell if they we're upsampled from 44.1kHz.

 

http://spek.cc/

 

Pardon my ignorance, but how does a spectrogram show if the file has merely been upsampled from 44.1kHz?

[kumakuma]

35 minutes ago, auricgoldfinger said:

 

Pardon my ignorance, but how does a spectrogram show if the file has merely been upsampled from 44.1kHz?

 

You may find this article that @Teresa wrote of interest:

 

https://positive-feedback.com/Issue60/hirez.htm 

[semente]

1 hour ago, auricgoldfinger said:

 

Pardon my ignorance, but how does a spectrogram show if the file has merely been upsampled from 44.1kHz?

See Teresa's piece.

You can also use https://www.audacityteam.org/

[grinner]

13 hours ago, Zooropean said:

https://fakinthefunk.net/en/#download

I don't think I'm going to download something which has no information from someone with exactly 1 posting.