Articulation Reduction by Combined Distortions of Speech Waves
作者:
D. W. Martin,
R. L. Murphy,
Albert Meyer,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1956)
卷期:
Volume 28,
issue 1
页码: 159-159
ISSN:0001-4966
年代: 1956
DOI:10.1121/1.1918111
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Previous investigators have shown that speech waves can undergo any one of a number of severe forms of distortion in low ambient noise levels without serious reduction of word articulation. There are well‐known notable exceptions (e.g., center clipping). However, it is not enough to avoid these exceptional forms of distortion. In the study reported here it has been demonstrated that combinations of speech wave distortions, which individually are quite innocuous with regard to word articulation, can be devastating in their combined effect, even in the absence of serious noise. Four types of speech‐wave distortion were tried, individually and in combination, as follows: gross attenuation of high‐frequency components, multiple echo, random amplitude modulation, and gross irregularity of response‐frequency characteristic. Ambient noise was also a controlled environmental condition in some phases of the investigation. [This work was sponsored by the U. S. Air Force under Contract AF33 (616)‐2320.]
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