Object structure

Journal or Publication Title:

Математические вопросы кибернетики и вычислительной техники=Կիբեռնետիկայի և հաշվողական տեխնիկայի մաթեմատիկական հարցեր=Mathematical problems of computer science

Date of publication:

2004

Volume:

23

ISSN:

0131-4645

Additional Information:

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Title:

On compensation of discrete Fourier transform error

Other title:

Ֆուրյեի ընդհատ ձևափոխության սխալի նվազեցման մասին

Creator:

David G. Asatryan

Subject:

Mathematics

Uncontrolled Keywords:

Ասատրյան Դ. Գ.

Coverage:

54-58

Abstract:

A problem of reduction of the percentage (relative) error, appearing at a ¯nite signal spectrum restoration by means of Discrete Fourier Transform is considered. A method based on using of a ¯nite impulse ¯lter with various impulse responses is o®ered. Depending on errors of the initial spectrum, a percentage error expression derivable after using the ¯ltering is obtained. A criterion for comparison between speci¯ed errors at a large number of discrete points is o®ered. Conditions, when the ¯lter of given response reduces the restoration error module, are obtained. Examples with uniform window and some ¯nite functions of standard type are considered. Keywords - FFT, discretization error, spectrum, spectrum restoration, ¯nite impulse ¯lter, error compensation.

Publisher:

Изд-во НАН РА

Date created:

2004-12-10

Type:

Հոդված

Format:

pdf

Location of original object:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան