SOFTWARE ENVIRONMENT FOR FREQUENCY ANALYSIS OF AUDIO SIGNALS USING ADVANTECH PCI-1716 DAQ CARD
Petr Dostálek · 2008
This paper presents possibility of utilization of Advantech PCI-1716 data acquisition card in system for audio signal frequency analysis. Developed software environment provides extended functionality such as window function selection (rectangular, triangular, Hamming, Hanning and Blackman) and window overlapping. Analyzed signals can be visualized in graphical form in the main window of the program or saved to a file for further evaluation. Measured sound signals are saved to the standard wav files in case of need. Software was created in MS Visual Studio 2005 with utilization of FFTW library which is distributed under GPL license.