Improved Theory of the Light Pattern Method for the Modulation Measurement in Groove Recording
作者:
J. Hornbostel,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1947)
卷期:
Volume 19,
issue 1
页码: 165-169
ISSN:0001-4966
年代: 1947
DOI:10.1121/1.1916415
出版商: Acoustical Society of America
数据来源: AIP
摘要:
A formula is derived that is applicable to the evaluation of light pattern measurements when non‐parallel light is used. It is shown that deviation from parallelism encountered in the laboratory may cause Buchmann and Meyer's simplified formula to be in error by several db. Numerical examples are given, and the results are extended to vertical and loop recordings.
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