NDLI: An adjustable shelf-type equalizer with separate control of frequency and limiting attenuation or amplification

Please wait, while we are loading the content...

An adjustable shelf-type equalizer with separate control of frequency and limiting attenuation or amplification

Content Provider	IEEE Xplore Digital Library
Author	Rose, R.
Copyright Year	1955
Abstract	This device provides for control of the high-frequency content of an audio program, allowing the operator to choose independently: 1) the frequency above which equalization is to occur, and 2) the maximum correction in signal strength which results in the range of frequencies under correction. Three operating controls are used. One control determines whether the high-frequency signals shall be increased, left unchanged, or decreased in strength relative to the low-frequency signals. A second control is calibrated in terms of the frequency above which correction shall occur. The third control adjusts the asymptote which represents the maximum correction which shall occur for frequencies considerably higher than that chosen by the frequency control described above. The circuit can be described briefly as follows: for high-frequency attenuation, the operation employs a negative feedback amplifier whose output may have high-frequency loss inserted by an RC network following the amplifier; for high-frequency boost, the RC network is inserted in the amplifier feedback path so that the amplifier output (which now becomes the system output) has a rising high-frequency response which corresponds to the attenuation of the RC network. All three controls are continuously adjustable within their ranges of operation.
Starting Page	112
Ending Page	117
Page Count	6
File Size	1435073
File Format	PDF
ISSN	00961981
Volume Number	AU-9
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1961-01-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Equalizers Attenuation Operational amplifiers Capacitors Frequency conversion Voltage control Capacitance Potentiometers Frequency control Feedback circuits
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A precision control circuit for variable-gain amplifiers

Current mode signal processing circuits

Programmable switched-capacitor bump equalizer architecture

Cathode followers and feedback amplifiers with high-capacitance loads

A pipelined A/D conversion technique with near-inherent monotonicity

New frequency-locked loop based on CMOS frequency-to-voltage converter: design and implementation

A novel frequency compensation technique for two-stage CMOS operational amplifiers

A low-voltage rail-to-rail CMOS V-I converter

Using a low-voltage COA for high-performance voltage amplification

An adjustable shelf-type equalizer with separate control of frequency and limiting attenuation or amplification

Similar Documents

A precision control circuit for variable-gain amplifiers

Current mode signal processing circuits

Programmable switched-capacitor bump equalizer architecture

Cathode followers and feedback amplifiers with high-capacitance loads

A pipelined A/D conversion technique with near-inherent monotonicity

New frequency-locked loop based on CMOS frequency-to-voltage converter: design and implementation

A novel frequency compensation technique for two-stage CMOS operational amplifiers

A low-voltage rail-to-rail CMOS V-I converter

Using a low-voltage COA for high-performance voltage amplification

An adjustable shelf-type equalizer with separate control of frequency and limiting attenuation or amplification