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Dynamically Determining Equiripple FIR Digital Filter Quality Metrics
 
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Slifer is available at http://www.dspcreations.com/slifer1.html Here the quality of an equiripple FIR digital filter is measured. Ripple and transition metrics are determined dynamically, changing as filter coefficients are adjusted. The usefulness of being able to painlessly archive design results becomes clear. This can ease subsequent quantification and comparisons of procedural effectiveness. Slifer is a powerful MATLAB-based filter design tool; learn more about it and related tools developed by DSP Creations at http://www.dspcreations.com
Views: 128 DSP Creations
Shaping Equiripple FIR Filter Sidelobes
 
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It is easy to shape the sidelobe structure of an equiripple FIR digital filter designed with the Remez algorithm in MATLAB. Here the 1/f shaping that is advocated in the "Multirate Signal Processing for Communication Systems" text (by Professor fred harris) is performed using the Sketch-a-Filt tool. What is the REASON for doing this type of shaping? As harris explains at length (pages 60-64), lowering sidelobes reduces susceptibility to sidelobe incursion once coefficients are quantized. Moreover, 1/f-style shaping is especially beneficial because outlier impulse response impulses are eliminated and the consequent lowering of the integrated sidelobe level decreases pile-up of aliased energy whenever filter output is re-sampled. The design specimen reproduced here can be seen in Figure 3.23 on page 66 of the harris book. It is shown that linear, square and even cubic sidelobe weighting can be done with just a few button clicks. Wholesale dB level shifting can be readily effected under slider control. While all this is happening, passband ripple is being monitored, and (as harris indicates) the in-band gain disturbance is found to often be only minor.
Views: 415 DSP Creations
First Order RC High Pass and Low Pass Filters
 
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A video tutorial on constructing high and low pass RC filters and demonstrating how to generate and measure signals using the NI MyDAQ device.
Views: 3315 Labview Project
Unleashing Ripple to Reduce Digital Filter Gain Transition Width
 
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Sketch-a-Filt is available at http://www.dspcreations.com/sketch1.html A minimum-phase lowpass FIR filter with very low passband and stopband ripples is first presented. Then it is shown that the transition width for the gain can be substantially reduced by liberating the ripple constraints in one or both bands. Sketch-a-Filt is a multi-featured MATLAB-based filter design tool ; learn more about it and related tools developed by DSP Creations at http://www.dspcreations.com
Views: 289 DSP Creations
How to Design FIR Lowpass Filter in MATLAB
 
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A Tutorial for Design FIR Lowpass Filter in MATLAB If you like this video Please share , subscribe and comment for improvement in this video.. Thank you for watching.! Please Like us on Facebook: https://www.facebook.com/antennas.propagation/ Don't forget to follow us on twitter: https://twitter.com/AnteenaDesign
implementation of FIR digital filter on fpga
 
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we were able to implement a lowpass FIR equiripple filter on FPGA. We've used spartan 3e. We calculated the filter coefficient form matlab and implemented it on FPGA using VHDL.
Views: 3627 Sujit R.Chhetri
i-JDSP FIR Filter Design Demo on iPhone/iPad
 
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i-JDSP; FIR filter design on iPhone/iPad/iPod touch. FIR design using windows. Kaiser filter design. Parks-McClellan filter design. Supported in part by NSF TUES and the SenSIP Center and Industry Consortium. Audio track credits: "Our Slanted Voices" by DoKashiteru licensed under a Creative Commons license
Views: 689 ASUSenSIP
Listening to the Effect of a Small IIR Digital Filter
 
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Sketch-a-Filt is available at http://www.dspcreations.com/sketch1.html A modest-sized IIR filter is designed by mouse-sketching a whimsical gain profile and its effect on a stored sound file is exhibited. You can store a play your own .wav files through any filter you design, and quickly amend the gain to emphasize desire portions of their spectra. Sketch-a-Filt is a multi-featured MATLAB-based filter design tool ; learn more about it and related tools developed by DSP Creations at http://www.dspcreations.com
Views: 205 DSP Creations
Windows in Matlab
 
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Helping out with using windows in matlab for Homework 1.
Views: 139 Jimmy Tobin
A wavelet-based method for optimum structural measurement/monitoring
 
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This work was presented by Seyed Hossein Mahdavi at DAMAS 2015, Ghent, Belgium. Don't hesitate to contact with me for more information. [email protected] [email protected]