NDLI: A continuous-time analog circuit for computing time delays between signals

Content Provider	IEEE Xplore Digital Library
Author	Chiang-Jung Pu Harris, J.G.
Copyright Year	1996
Description	Author affiliation: Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA (Chiang-Jung Pu)
Abstract	We describe an analog VLSI circuit that computes the time delay between an arbitrary input signal and its delayed version. Versions of this circuit will be used as the basic computational elements for human auditory localization models in both the horizontal and vertical directions. Since the circuit uses subthreshold CMOS circuitry, chip measurements show that delays ranging over five orders of magnitude can be recovered. The circuit delays the first input signal by two distinct time-constants and correlates each with the second input signal. The correlation values at the two points are then integrated and used to compute a finite-difference derivative that dynamically adjusts the time constants until an optimal delay is found. This paper describes the first continuous-time circuit for computing delays between arbitrary signals.
Starting Page	357
Ending Page	360
File Size	361774
Page Count	4
File Format	PDF
ISBN	0780330730
DOI	10.1109/ISCAS.1996.541607
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-05-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Analog circuits Analog computers Delay effects Psychoacoustic models Humans Time measurement Shape Ear Very large scale integration Semiconductor device modeling
Content Type	Text
Resource Type	Article

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	Mr. Siddhartha Mukherjee siddhartha@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	ndl-support@iitkgp.ac.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Libarray 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
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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