This is a set of programs and scripts to do impedance measurements and transfer function measurements (network analyzer) with PC sound devices.→ Components → Setup → Download → Build → Contact
|Access to the sound device
||-||platform dependent, external tool required||You need a platform dependent way to record and play 16 bit
two channel audio data via a pipe or provide an appropriate character
On Linux there are usually matching character devices. OS/2 has the application Playrec 0.20b21 to record into and play from a pipe. Win*: don't know.
|Generation of noise reference
||Wide band measurements
|Generation of sine wave reference
||C++ application||Sweep measurements (frequency scan)
|Analysis of frequency scans
|Show the result
||Gnuplot 3.x macros||In general you can use any graphics application to show the
results. But only macros for Gnuplot are part of this package.
|Control||measure.cmd||REXX skript, OS/2 only!||The REXX scripts are non-portable.|
The program is licensed under GNU GENERAL PUBLIC LICENSE.
Source code and scripts: repository snapshot
OS/2 binaries: bulid with gcc 3.3.5 (requires libc063.dll)
For FFT the library FFTW,
version 2.1.x is required. This must be available as shared or
static library and the header files.
The Makefile is currently adjusted to OS/2 gcc version 3.3.5 and contains the path to rfftw. You have to change that on other platforms. In general adjusting the paths and the compiler options should be sufficient.
If everything is fine the executables are built in the bin
sub folder. Feel free to contact me if you
Suggestions, help, complaints (but not too much:-):