The BBC had no viable means of recording sound until 1930. Among the first recording machines was the Blattnerphone, designed by early British film maker Louis Blattner. The device used 6mm steel tape ...
The BBC had no viable means of recording sound until 1930. Among the first recording machines was the Blattnerphone, designed by early British film maker Louis Blattner. The device used 6mm steel tape ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results