barcode lib ssrs (a) The design formula used to estimate the order for a low-pass equiripple tilter is in Software

Printing ANSI/AIM Code 128 in Software (a) The design formula used to estimate the order for a low-pass equiripple tilter is

(a) The design formula used to estimate the order for a low-pass equiripple tilter is
Code 128 Code Set C Scanner In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Encoding USS Code 128 In None
Using Barcode encoder for Software Control to generate, create Code 128 image in Software applications.
With the smaller of the two passband ripples being equal to 6, = 0.02, a stopband ripple of 6, = 0.001, and a transition width Aw = 0.02n, an estimate of the filter order is
Recognize Code 128 Code Set A In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
Generating Code-128 In Visual C#.NET
Using Barcode drawer for VS .NET Control to generate, create USS Code 128 image in Visual Studio .NET applications.
However, because this estimate is for a low-pass filter, the actual tilter order required is closer to N = 242. which may be confirmed by computer.
Encode Code 128 Code Set B In VS .NET
Using Barcode maker for ASP.NET Control to generate, create Code 128A image in ASP.NET applications.
Code 128B Maker In .NET Framework
Using Barcode generation for .NET Control to generate, create Code 128C image in Visual Studio .NET applications.
CHAP. 91
Code-128 Drawer In VB.NET
Using Barcode generator for Visual Studio .NET Control to generate, create USS Code 128 image in VS .NET applications.
EAN 13 Creator In None
Using Barcode encoder for Software Control to generate, create GS1 - 13 image in Software applications.
FILTER DESIGN
USS Code 128 Maker In None
Using Barcode printer for Software Control to generate, create Code 128 Code Set C image in Software applications.
Bar Code Creator In None
Using Barcode printer for Software Control to generate, create bar code image in Software applications.
( b ) With a ripple of 6, = 0.02 in the lower passband, S2 = 0.001 in the stopband, and S3 = 0.05 in the upper passband, an appropriate weighting function would be
UCC - 12 Creation In None
Using Barcode drawer for Software Control to generate, create EAN 128 image in Software applications.
Encode UCC - 12 In None
Using Barcode creator for Software Control to generate, create GS1 - 12 image in Software applications.
However, scaling these weights by any constant would not change the design.
Generate RoyalMail4SCC In None
Using Barcode printer for Software Control to generate, create RoyalMail4SCC image in Software applications.
DataMatrix Drawer In None
Using Barcode printer for Online Control to generate, create ECC200 image in Online applications.
( c ) Assuming a filter order of N = 232, which is a type I design, the amplitude response has the form
Decoding UPC-A Supplement 5 In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Generate USS Code 39 In Java
Using Barcode maker for Java Control to generate, create Code 39 Full ASCII image in Java applications.
A(el") =
Scanning ECC200 In Visual Studio .NET
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET applications.
Barcode Drawer In Objective-C
Using Barcode generation for iPad Control to generate, create barcode image in iPad applications.
a ( k )cos kw
2D Barcode Generator In Java
Using Barcode drawer for Java Control to generate, create 2D Barcode image in Java applications.
Bar Code Decoder In VB.NET
Using Barcode Control SDK for VS .NET Control to generate, create, read, scan barcode image in Visual Studio .NET applications.
where L = N / 2 = 116. Therefore, the minimum number of extrcmal frequencies is L
+ 2 = 1 18.
We would like to design an equiripple high-pass filter of order N = 64. The stopband ripple is to be no larger than 6, = 0.001, and the passband ripple no larger than 8 , = 0.01. If we want a passband cutoff , frequency equal tow, = 0 . 7 2 ~what will the stopband cutoff trequency be approximately equal to
For an equiripple low-pass filter, an approximate relation between the filter order N , the passband and stopband ripples, 8, and &, respectively, and the transition width A f , is given by
Because a high-pass filter may be formed from a low-pass filter as follows,
this formula is also applicable to high-pass filters. With N = 64, 6, = 0.0 I, and 8, = 0.001, we find that
. Therefore, if the passband cutoff frequency is w, = 0 . 7 2 ~ the stopband cutoff frequency will be approximately
w,, = w,
2~ Af = 0 . 6 4 0 8 ~
Suppose that we want to design a low-pass filter of order N == 63 with a cutoff frequency w, = 0 . 3 1 ~ and a stopband cutoff frequency o,= 0 . 3 2 ~ .
( a ) What is the approximate stopband attenuation that would obtained if this filter were designed using the window design method with a Kaiser window.
(6) Repeat part ( a )for a equiripple filter assuming that we want 8 = 6,. ,
(a) For a Kaiser window design. the relationship between the filler order N , the stopband attenuation a, = -20 log 6,. and the transition w ~ d t h f is A a, - 7.95 N = l4.36Af
Solving this for the stopband attenuation, we have
which corresponds to a stopband (and passband) ripple of
6S - 10-16.99120 = 0.141 -
FILTER DESIGN
[CHAP. 9
(b) For an equiripple filter, the filter order is approximately
With 6, = 6,. this becomes
where a, = -20 log 6,. Solving for a,, we have
The corresponding stopband ripple is
6S - 10-22.0-W" -
0 079
The linear phase constraint on FIR filters places constraints on the unit sample response and the location of the zeros of the system function. In the table below, indicate with a check which filter types could successfully be used to approximate the given filter type. Type I Low-pass filter High-pass filter Band~ass filter Bandstop filter Differentiator Type 1 1 Type 1 1 1 Type IV
11 11
A type I linear phase filter has no constraints on the locations of its zeros. Therefore, a type I filter may be used for the design of any type of filter. The type I1 linear phase filter will always have a zero at w = n. Therefore, these filters should only be used for low-pass and bandpass filters. The type 111 linear phase filter is constrained to have zeros at w = n and w = 0. Therefore, type 111 filters should only be used for the design of bandpass tilters. Finally, because the type IV filters have a zero at w = 0, they should not be used in the design of low-pass or bandstop filters. These results are summarized in the table below.
Copyright © OnBarcode.com . All rights reserved.