I have already published this article on another resource, but I hope the readers of Habr will also be interested.

Stereo sound has not been needed by anyone for half a century since its invention, and now we cannot even imagine mono music. How could this have happened?
1881 . . , . . . .

. "". , , .


"" - .
, . (Alan Dower Blumlein).
The Gramophone Company, , .
. , . .

50 Dolby Surround.
. +45/-45. . 0/90.

. 1933 .
, . , . , , , ..
. 1942 . 38 .
128 , . .
2017 ยซ ยป

1958 Westrex ().
: . " -" 1957 .

: , .
, 618, 212 . , 4 , 70...12000 , . , .


1961 ยซ-10ยป. ""

: 1-9-150, 5-1-. 2.1. 61 .)))
"-" 1972 .

Even today, despite the abundance of recording formats, many of us continue to listen to music in the format invented by Alan Blumlein 90 years ago - stereo .