ASIOSigGen generates sine wave test signals of the highest possible accuracy (Internal calculations at 80 bits), with 0 DC and linear tapering, in the full range of 10 Hz to 22050 Hz, at attenuation values from 0 to 60 dB. As well, you can select from 9 octaves of musical notes with extreme precision. Only sound cards with default internal format of 32 or 16 bits supported in current version (For example, M-Audio's Delta series, Digigram's VX222v2, Sound Blaster's Audigy 2). See more details at http://www.magma.ca/~gtaylor/ASIOTestSigGen.htm

The license of this software is Freeware, you can free download and free use this audio utility software.