winzip icon

Signal spectrum

Submitted on: 3/30/2020 3:04:29 PM
By: The trick  
Level: Intermediate
User Rating: By 3 Users
Compatibility: VB 6.0
Views: 1466

Hello everyone!

This project contains the sound signals generator with the spectrum visualizer. The list of signals contains the following forms:

  • White noise;
  • Pink noise;
  • Brown/Red noise;
  • Blue noise;
  • Violet noise;
  • Sine modulation by low frequency;
  • Square wave (odd harmonics with 6db/oct attenuation);
  • Saw wave (odd/even harmonics with 6db/oct attenuation);
  • Triangle wave (odd harmonics with 12db/oct attenuation);
  • Signal with only even harmonics;
  • Complex FM modulation;
  • AM modulation.

The spectrum visualizer supports resolutions up to 32768 points and averaging. The discrete complex FFT (Fast Fourier Transform) is used to visualize the spectrum. This procedure is optimized to processing a real signal using the even/odd decomposition in frequency domain which allows to performs the transformation of 2 real signals as single complex signal. The further synthesis of the spectrum is based on shifting in time domain and corresponding frequency domain rotation. The comments in the code describes everything in details.

Best Regards,
The trick.

winzip iconDownload code

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. Afterdownloading it, you will need a program like Winzip to decompress it.Virus note:All files are scanned once-a-day by Planet Source Code for viruses, but new viruses come out every day, so no prevention program can catch 100% of them. For your own safety, please:
  1. Re-scan downloaded files using your personal virus checker before using it.
  2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.
  3. Scan the source code with Minnow's Project Scanner

If you don't have a virus scanner, you can get one at many places on the net

Other 6 submission(s) by this author


Report Bad Submission
Use this form to tell us if this entry should be deleted (i.e contains no code, is a virus, etc.).
This submission should be removed because:

Your Vote

What do you think of this code (in the Intermediate category)?
(The code with your highest vote will win this month's coding contest!)
Excellent  Good  Average  Below Average  Poor (See voting log ...)

Other User Comments

5/26/2020 1:48:44 PMPaul Bahlawan

That's amazing!!
(If this comment was disrespectful, please report it.)


Add Your Feedback
Your feedback will be posted below and an email sent to the author. Please remember that the author was kind enough to share this with you, so any criticisms must be stated politely, or they will be deleted. (For feedback not related to this particular code, please click here instead.)

To post feedback, first please login.