![](https://images.plex.tv/photo?size=large-1920&scale=1&url=https%3A%2F%2Fimage.tmdb.org%2Ft%2Fp%2Foriginal%2Fs4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
Royal Institution Christmas Lectures
The Sound of Broadcasting
1972 • E3 Jan 1, 1973 40m
Nowadays when we listen to the radio not only do we understand the words but we can identify the persons speaking; not only do we recognise the tune, but we enjoy the quality. Geoffrey Gouriet , Chief Engineer, BBC Research and Development, demonstrates how this has been achieved.