[GTALUG] Landline and Bell revisited.

[James Knott]

On 2023-09-07 18:10, o1bigtenor via talk wrote:
> There are are audible differences between CODECS - - - likely few 
> people can tell the difference.

If you can't tell the difference between some CODECs there's something 
wrong with your ears.  As I mentioned, some are designed to squeeze as 
many voice channels as possible out of a given bandwidth.  They are 
quite noticeable, compared to the standard G.711 CODEC and the wider 
ones can provide a noticeable improvement.  Even with CODECs for music, 
you can sometimes catch an artifact of the compression.  One example of 
this I have come across is the Beatles "A day in the life.".  There is 
one soft stretch where the audio is dead centre between the left & right 
tracks, which I can hear on the CD, but not with the MP3 version.