Analysis of Sound Quality with the Variable Density Recording Method from Sensitometric Data

R. Schmidt, A. Kuester

The manner in which quality controlling factors for reproduced sound can be derived from the photographic characteristics of variable density sound records is described. Density curves and transmission values serve to calculate and express in quantitative terms: loudness, volume range, noise, and distortion, for a given degree of electrical amplification. Normal and noiseless sound recording are discussed and described from the photographic point of view. The photographic process is described in sensitometric terms, and it is shown how the tolerances within which it has to be carried can be determined and controlled.

Print ISSN
Published
1933-11
Content type
Original Research
DOI
10.5594/J16615