Re: Blumlein's UL Patent

"John Stewart" <jh.stewart@xxxxxxxxxxxx> wrote

> Odd that Blumlein is not better known in audio circles, in
> particular due to this important circuit which many of us have
> used.
>
> http://www.doramusic.com/patents/496883.htm

Probably much more well known in Europe. I come across the name
frequently in connection with the maths of stereo reproduction,
particularly wrt recording.

eg http://www.doramusic.com/patents/394325.htm

Apparently he invented stereo. I wouldn't be surprised if, in
America, it was invented by an American.

So did he get royalties from recording companies and UL amp makers?
The connection with UL is new to me...it's generally credited to
H&K.

cheers, Ian


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