DocumentCode
1088919
Title
The theory of transient intermodulation distortion
Author
Otala, Matti ; Leinonen, Eero
Author_Institution
Technical Research Centre of Finland, Oulu, Finland.
Volume
25
Issue
1
fYear
1977
fDate
2/1/1977 12:00:00 AM
Firstpage
2
Lastpage
8
Abstract
The existing theory of transient intermodulation distortion (TIM) is extended to cover the calculation of the duration of intermodulation bursts. It is shown that feedback values in excess of some 40 dB will cause large internal overshoots within the amplifier. The clipping of these overshoots due to the limited dynamic margins of the amplifier driver stages is shown to give rise to long periods during which the amplifier is in cut-off condition. The duration of these periods is calculated and the mathematical results are verified with digital and analogue simulation. Finally, the relationships of TIM, slew rate, and power bandwidth are discussed.
Keywords
Bandwidth; Distortion measurement; Driver circuits; Ear; Feedback circuits; Frequency; Intermodulation distortion; Negative feedback; Power amplifiers; Transfer functions;
fLanguage
English
Journal_Title
Acoustics, Speech and Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
0096-3518
Type
jour
DOI
10.1109/TASSP.1977.1162904
Filename
1162904
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