Calculations of the effects of peak clipping on speech-like signals

Peak clipping is a well known method of increasing the average power of a peak power limited voice communication transmitter. Although the clipping process introduces distortion, articulation tests have shown that clipped speech remains highly intelligible. Using idealizations of vowel sounds based on the mechanism of speech production, calculations were made of the spectra resulting from clipping these speech-like signals. The results indicate a high degree of similarity between the spectra before and after clipping. The power gained by clipping at audio frequency and at narrowband was calculated and compared with previously published data. Repeaking due to component rejection was investigated for clipping at audio and narrowband. Calculations of the effect of varying the phase characteristic of the signals before clipping indicate that such variation may improve the intelligibility of clipped speech.

Department dc:contributor.department

Department of Electrical Engineering

Grantor dc:publisher

Monterey, California. U.S. Naval Postgraduate School

Year dc:date.issued

1966

Author dc:creator

• Dietrich, William Varner

Advisor dc:contributor.advisor

• Ewing, Gerald D.

Statement dc:rights

• This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.

Language dc:language.iso

en_US

Handle dc:identifier.uri

https://hdl.handle.net/10945/9454

OAI identifier oai:identifier

oai:calhoun.nps.edu:10945/9454