It can generate one or two tones, and/or pink noise, simultaneously if desired.
Generating two tones simultaneously can be useful to check intermodulation distorsion in audio or radio equipment.
The performance is completely driven by the sound card you are using.
This program uses DirectSound (a Windows component) to generate sound.
Here is a view of the main window:
Check the Release Notes page for credits, downloads, installation, usage and the latest information and bug fixes.
Software License available here.