AD Sound Tools is a real-time software that provides effective use of your PC sound devices. It includes a signal generator, a recorder, two oscilloscopes and two spectrum analyzers. The program allows to control your recording device in time and frequency domains, record a signal to WAV file and then convert it to MP3 one. AD Sound Tools can generate sine, white noise and short pulses signals and monitor them in separate waveform and spectrum windows. Connecting the generator and available sound devices you can get its frequency response by sine sweep, optionally white noise and short pulses. The data obtained can be saved as a Windows Bitmap and a text CSV-file. The program can be used in educational purposes. It allows you to perform some interesting tests with your sound devices including microphone localization and sound interference tests.