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VisualAudio

Pictures

Discs

Sample discs views. Magnification factors are between 200x and 400x.

Top view of a 33 1/3rpm microgroove stereo record Top view of a 33 1/3rpm microgroove stereo record
Top view of a 33 1/3rpm microgroove stereo record Top view of a 33 1/3rpm microgroove stereo record
Section cut of a 33 1/3rpm microgroove stereo record Section cut of a 78rpm coarse groove monophonic record
Section cut of a 33 1/3rpm microgroove stereo record Section cut of a 78rpm coarse groove monophonic record
Top view of a 78rpm monophonic record Dust on a 78rpm monophonic record
Top view of a 78rpm monophonic record Dust on a 78rpm monophonic record
Scratch on a 78rpm record Acetate 78rpm record with shrinkage of the lacquer coating
Scratch on a 78rpm record Acetate 78rpm record with shrinkage of the lacquer coating

 

Photo Camera

Photo camera Photo Camera
Photo Camera Photo Camera
Photo Camera Photo Camera

 

Film Scanner

Film Scanner Film Scanner
Film Scanner Film Scanner

 

Films

Some sample films that were used for the first tests. Magnification factor is around 200x.

Films6 Top view of a 33rpm microgroove stereo record
Scratch on a 78rpm record Test record HFN001 (33 1/3rpm)
Scratch on a 78rpm record Test record HFN001 (33 1/3rpm)
78rpm acetate record with shrinkage of the lacquer coating Dust on a 78rpm record
78rpm acetate record with shrinkage of the lacquer coating Dust on a 78rpm record

 

FNSNF Swiss National Sound Archives Ecole d'ingénieurs et architechtes de Fribourg Gerbert Rüf Stiflung Université de Fribourg
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