Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16- 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis OscilloScope Frequency counter AC/DC voltmeter Signal-to-Noise Ratio Signal-to-Noise and Distortion Spurious-Free Dynamic Range Effective Number Of Bits Total Harmonic Distortion Inter-Modulation Distortion Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra Spectra of digital sum difference product of two signals Spectrum of digital product of original signal and its fundamental Spectrum of Real and Complex Transfer Function Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals sum difference dependence of one channel on another amplitude distribution of input signals.