Sometimes referred to as a ‘sound camera’. Used to convert the audio into an optical image on film.
https://www.nfsa.gov.au/sites/default/files/uploads/2010/08/31/optical-recorder.jpg
Sometimes referred to as a ‘sound camera’. Used to convert the audio into an optical image on film.
https://www.nfsa.gov.au/sites/default/files/uploads/2010/08/31/optical-recorder.jpg