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Dynamic Low, High and Band pass filter

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4.3 | 3 ratings Rate this file 26 Downloads (last 30 days) File Size: 72.6 KB File ID: #31985
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Dynamic Low, High and Band pass filter

by Gaurav Gupta

 

28 Jun 2011 (Updated 08 Feb 2012)

An application to dynamically filter signal (sound) with interactive drag of mouse

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Description

This application aims to show visually the effects of filter frequency change on signal.It is provided with dynamic filter which can change its low and high frequencies by user mouse drag.

References :
Digital Signal Processing by Li Tan
Acknowledgements

Dragzoom Drag And Zoom Tool inspired this file.
MATLAB release MATLAB 7.12 (R2011a)
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cursor, filter(4), gui, signal, sound, speech
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Comments and Ratings (4)
26 Jul 2012 Peter De Ford  
02 Feb 2012 kim yeongmin

Oh, that is a good resource.
29 Jun 2011 Gaurav Gupta

yeah, perhaps you should use LF (or HF) box to input exact and low (or high) frequencies
29 Jun 2011 Steffen B. Petersen

very nice work.
One suggestion: left limit of the bandpass filter (green dot) is trapped, and cannot be controlled with the mouse, if you want to move it towards lower frequencies.
Updates
29 Jun 2011

fixed problem of extreme frequencies selection by mouse
30 Jul 2011

Minimum bandwidth updated, edit boxes directly connected to filter output process
27 Jan 2012

New features like cursors are introduced where user can see values of signal at any point.
Further inbuilt audio player has been introduced to listen to input and filtered output to realize difference user has made on signal.
08 Feb 2012

Fixed icon bug

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