Digital Signal Processing

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Digital Signal Processing

• Electrical Engineering Department
• Iran University of Science Tech.

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Digital Signal ProcessingTopic 8 Filter Design
IIR

• 1. Filter Design Specifications
• 2. Analog Filter Design
• 3. Digital Filters from Analog Prototypes

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1. Filter Design Specifications
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Performance Constraints
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Performance Constraints
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Passband Ripple
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Stopband Ripple
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Filter Type Choice FIR vs. IIR
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FIR vs. IIR
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IIR Filter Design
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2. Analog Filter Design
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CT Transfer Functions
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Butterworth Filters
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Butterworth Filters
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Butterworth Filters
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Butterworth Filters
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Butterworth Example
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Butterworth Example
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Chebyshev I Filter
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Chebyshev I Filter
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Chebyshev I Filter
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Chebyshev II Filter
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Elliptical (Cauer) Filters
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Analog Filter Types Summary
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Analog Filter Transformations
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Lowpass-to-Highpass
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Lowpass-to-Highpass
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Transformation Example
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Transformation Example
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Transformation Example
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3. Analog Protos ? IIR Filters
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CT to DT Transformation
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Bilinear Transformation
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Bilinear Trnsformation
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Bilinear Transformation
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Frequency Warping
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Design Procedure
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Bilinear Transform Example
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Bilinear Transform Example
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Bilinear Transform Example
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Other Filter Shapes
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DT Spectral Transformations
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DT Frequency Warping
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Another Design Example
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Another Design Example