SinGen v1.2  SinGen is a simple software sound generator that outputs sine (sinusoidal) or square wave with desired frequency or white noise to sound card. The program is very useful in tuning and repairing various audio devices: power amplifiers, preamplifiers e.t.c. Sample rate is 44100Hz / 48000Hz (chooseable), 16 bit, mono. The program is freeware. Also, I want to notice that some sound cards have better performance in 44100Hz mode, but others in 48000Hz mode (for example, mine - C-Media 8738). Download Singen