DocumentCode
1080609
Title
Equal loudness contour circuit using an operational amplifier
Author
Grimes, J. ; Doran, Simon J.
Author_Institution
Iowa State university, Ames, Iowa
Volume
18
Issue
3
fYear
1970
fDate
9/1/1970 12:00:00 AM
Firstpage
313
Lastpage
315
Abstract
Without contour compensation, music sources appear to have lower bass and treble response at lower volume levels. This occurs because our ears are less sensitive to the extreme frequencies at low-sound levels (Fletcher-Munson effect). This correspondence describes a circuit that compensates for this effect and is compatible with today´s integrated circuit amplifier designs.
Keywords
Ear; Equations; Feedback circuits; Frequency response; Gain; Impedance; Negative feedback; Operational amplifiers; Poles and zeros; Shafts;
fLanguage
English
Journal_Title
Audio and Electroacoustics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9278
Type
jour
DOI
10.1109/TAU.1970.1162104
Filename
1162104
Link To Document