File:Buttergr.jpg

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File information
Description	Filter Response
Source	Experimental Wireless page 536-541
Date	October 1930
Author	Stephen Butterworth 1885-1958
Permission (Reusing this file)	See below.

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	05:42, 1 December 2012		700 × 613 (171 KB)	Dicklyon (talk \| contribs)	better version from online paper, straightened
	23:36, 6 February 2010		400 × 350 (44 KB)	Trojancowboy (talk \| contribs)	{{Information \|Description = Filter Response \|Source = Experimental Wireless page 536-541 \|Date = October 1930 \|Author = Stephen Butterworth \|Permission = British Admiralty \|other_versions = }}

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File usage

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Butterworth filter

Metadata

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Orientation	Normal
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Software used	Adobe Photoshop CS5 Macintosh
File change date and time	21:42, 30 November 2012
Color space	Uncalibrated
Date and time of digitizing	13:32, 30 November 2012
Date metadata was last modified	13:42, 30 November 2012
Unique ID of original document	xmp.did:F77F117407206811B057E20FEA8ECF43

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