Documentary explaining how double bilateral variable area optical soundtracks are recorded onto film and played back in cinemas.
| Release Date | January 1, 1934 | |
|---|---|---|
| Status | Released | |
| Original Title | How Talkies Talk | |
| Runtime | 12min | |
| Budget | — | |
| Revenue | — | |
| Language | English | |
| Original Language | English | |
| Production Countries | United Kingdom | |
| Production Companies | Gaumont-British Instructional | |