optical-sound-recording
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| From 1942—The Victor Animatophone Sound Movie Projector |
|
0 | 241 | 24 February 2023 |
| From 1950—“The Soundman”: Movie Optical Soundtrack Production |
|
0 | 316 | 26 July 2022 |