Continuous Microphone Spectrum

Continuously show the updated frequency spectrum of the microphone signal

Description

This short script continuously reads sound data from the windows soundcard (microphone of line-in) and displays the updated frequency spectrum. It is mostly, a data acquisition example using the built-in Windows sound card.

• Required Products: Data Acquisition Toolbox
• MATLAB release: MATLAB 7.2 (R2006a)
• Other requirements: Tested on WinXP, MATLAB v7.1.0.246(R14) with Data Acq. Toolbox v2.7

[kittisak wadsuntud]

 

[Albert Lu]

It would be nice if the plot is updated constantly

[Jim Donohue]

Albert Lu, try setting duration = .2 in the script.

[Albert Lu]

Enter
drawnow;
After the plotting command. This allows for continuous update.

[Dariya Mykh]

 

[karthik raj]

good

[shrikant modh]

HI
Can u tell me how to find the frequency spectrun of the recorded speech signal.

[Tom?]

Hi, does it work under linux/mac os x?