I've written some utilities for processing and generating .WAV files which may be useful for various SDR experiments, particularlyI/Q upconverters. The software can be downloaded from:
www.scrbg.org/g4jnt/WAVDSP.ZIP The suite contains : WAVMIX3 - (still in trial phase) allows individual .WAV files to be frequency translated and mixed into a wideband destination stereo I/Q file to generate multicarrier wideband test signals in I/Q format at the standard sampling rates of 32k/44.1k/48k or 96k. The only proviso is that source files must be sampled at the same rate or an exact integral submultiple of the destination sampling rate. I haven't mastered non-integral interpolation - yet! Optional low pass filtering can be applied to the source, and translation (plus or minus) can be specified arbitrarily as well as amplitude of the added signals. There may be (are?) a few bugs or glitches still to be found, all feedback welcome. WAVAN is a spectral analysis programme for mono (or stereo non-I/Q) files. WAVANIQ is the same, but gives the analytical two sided spectrum of a stereo I/Q wav file. Ideal for looking at the results generated from WAVMIX3 CW2WAV generates a .wav file of a CW message. TOne frequency, sampling rate and CW speed can be varied at will. ADDNOISE Just just that, with Gaussian noise at a user-specified level added to a .WAV file. CHKWAV Evaluates a .WAV file and displays max / min values, peak , mean and RMS values as well as the sampling rate, length, sampling etc. There's no further documentation yet - but the progs should be pretty well self-explanatory. All run in a command prompt, and are written in an old 16 bit dos-based programming language. But, work perfectly well on Win-XP All apart from WAVMIX are quite old progs and may have some wierd aspects that I never noticed or found, and using the S/W may not be obvious as the progs were originally written just for my own personal use. Andy G4JNT www.scrbg.org/g4jnt ps. Hint, get as copy of SNDREC32 from an old machine - its much quicker and easier to use for quick replay of .WAV files than all the media players etc bundled with later versions of windows.
