Harman How to Listen (2011)
harmanhowtolisten.blogspot.com
harmanhowtolisten.blogspot.com
I'm sure encouraging audio enthusiasts to improve their critical listening skills is in Harman's interest, but from the perspective of a consumer that's currently happy with lower-cost products, I would say ignorance is bliss...
Also interesting that this software was apparently only published once in 2011 as a beta with version number 2.04, and then never received an update, or even another blog post.
I wonder if Harmon are so confident in their own products' superiority that they assume that a more educated audience will lead to a proportional increase in sales. Or perhaps they view education as important in its own right. (Given your point about this being the only publication of the software, perhaps neither!)
It turned out that a bitrate of 112 Kbps was completely transparent for me. In the meantime there were forum wars on whether or not 320 was sufficient or not.
The experience humbled me. I cannot hear anything near as much as the pros (apparently) can.
And:
The mp3 bitrate tests are on this page:
https://abx.digitalfeed.net/list.lame.html
And be sure to read the classic essay on 24/192:
My takeaway from the experience was that the bitrate didn’t really matter above 128 Kbps AAC. This was me paying super close attention and trying to find flaws in the encoding, not actually listening to music. I periodically rerun the test in myself as I get better equipment (laptop DACs are quite good now, for example) and get similar results. Age will be a limiting factor soon as it takes my hearing.
But you could do that, too.