5.0 | 5 ratings Rate this file 203 downloads (last 30 days) File Size: 10.66 KB File ID: #10569

EQUALIZER

29 Mar 2006 (Updated 15 Nov 2006)

No BSD License

Equalizer GUI for winsound

File Information
Description	EQUALIZER Audio equalizer GUI EQUALIZER starts an equalizer for audio input on a PC. This is created as a demonstration of ANALOGINPUT and GUI. It performs real-time power spectral density estimation on acquired audio data and displays them in frequency bins. This may not be how a real equalizer works, so it should be used simply as a demo. The top panels show the raw audio signals (time series), and the bottom two panels show the spectral densities. Clicking on the panels changes the colors of the signals. Pressing the space bar (when the window is in focus) shrinks or grows the window to show all 4 panels or the bottom 2 panels. Pressing the escape key closes the equalizer. It requires the Data Acquisition Toolbox. Also, it may only work on PCs since it uses the winsound adaptor. Because of the high sampling and refresh rate, it may consume significant processing power. This will only work in MATLAB R14 or later (because it uses nested functions). Example: load handel; equalizer; soundsc(y, Fs);
Acknowledgements	The author wishes to acknowledge the following in the creation of this submission: Data Acquisition Start/Stop Button
Required Products	Data Acquisition Toolbox
MATLAB release	MATLAB 7.3 (R2006b)
Other requirements	Works in MATLAB R14 or later

Tags for This File
Everyone's Tags	analog input, audio processing, data acquisition, gui, power spectral density, video processing, winsound
Tags I've Applied
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Comments and Ratings (8)
16 May 2006	Szuras Lech	For me great program. Congratulations
02 Oct 2006	Mike Ham	works great, good job.
20 Oct 2006	miguel alexander valderrama garcia	i'd like know how to run this excellent program..i need to run it..please send me a e-mail with the detaiols about this
23 Oct 2006	carol bautista	good day! mind helping me? i was actually having a project on this and thanks for the program. its just pls help me in using this thanks
14 Nov 2006	Kuang Zheng	this code is really great, but if I want to do some change, like adjust each channel's pass coeffients, that is, to add some equalizer filter, what should I do? thanks. email me please
27 Feb 2008	Raju Kadam	Excellent Coding. It shows perfect behavior.
31 Mar 2008	Raju kadam	it seems to be not exactly allocation of code memory with using client side Authentication
01 Oct 2009	delin chang	i'm searching this file for a few days... it works! great!

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Updates
15 Nov 2006	Converted the code to use nested functions. This will only work with MATLAB R14 or later.

Tag Activity for this File
Tag	Applied By	Date/Time
audio processing	Jiro Doke	22 Oct 2008 08:21:00
video processing	Jiro Doke	22 Oct 2008 08:21:00
analog input	Jiro Doke	22 Oct 2008 08:21:00
data acquisition	Jiro Doke	22 Oct 2008 08:21:00
winsound	Jiro Doke	22 Oct 2008 08:21:00
power spectral density	Jiro Doke	22 Oct 2008 08:21:00
gui	Jiro Doke	22 Oct 2008 08:21:00

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