The free version of the advanced sound measurement software DSSF3 is now available. It consists of the signal generator, sound recorder and player, and the peak level meter. DSSF3 Basic works with the latest soundboards. Two or more soundboard can be selected easily. The sampling rate can be set up to the maximum value allowed by the hardware. Signal Generator spec Tone, noise, sweep and pulse is generated as a stereo signal. As for tone, sinusoidal, triangle, square, and saw-tooth wave can be chosen. Each channel can generate different signals with specified frequencies. As for noise, white and pink can be chosen. Sweep is a tone signal of which frequency is varied continuously. Pulse signal is generated with specified number of time, duration and interval. Recording and Playback Recording of sound up to about 10 minutes is possible. Playback of the recorded sound can be measured by the FFT analyzer (Spectrum, octave analysis, oscilloscope, ACF IACF measurement) simultaneously.