Actually it is mainly based on a digital band-pass filter using window functions.
With fixed passband(1000Hz~1500Hz) and center frequency(1250Hz).
It can be applied on Arduino due (32-bit cortex-m3 ARM).
The further improvement is basically try to make it flexiable, to provide a GUI with some specifications as input.
The window function applying in the project is Chebyshev windows using Parks-McClellan algorithm, the source code
and h-file are from 'http://t-filter.appspot.com' temporarily.
If there are any comments or suggestions, please sent me an E-mail to 'diegozengtao@gmail.com'
===============Update on July 30th===============
Now the project has huge development: It is a flexible bandpass filter using four different wiondow functions(Kaiser,
Hanning, Hamming, and rectangular). The hardware is still Arduino due (32-bit cortex-m3 ARM).
The input are:
-
The sidelobe attenuation
-
fc1 and fc2 (For hanning, hamming and retangular)
fs1, fp1, fp2, fs2 (For kaiser)
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Sampling frequency (Users need to do calibration of the hardware setting in 'Calibration.ino'
-
The input signal will convey into the Arduino due board through the analongInput(A0)
The output will be exported by digitalOutput DAC0/DAC1, and the final results will be represented in the Oscilloscope.
For the convolution algrithom, there is a reference from 'http://t-filter.appspot.com'. Other codes are my indenpendent
work.
If there are any comments or suggestions, please sent me an E-mail to 'diegozengtao@gmail.com'
===============Update on September 5th===============
User Manual 1.0 Uploaded.
This is my first time to write user manual in LaTex.
Please complie it with “PdfTex”
Forgive me about the Tex code form. I will improve my programming skills in the future by practising.
If there are any comments or suggestions, please sent me an E-mail to 'diegozengtao@gmail.com'