This paper presents a procedure for wind speed measurement using ultrasonic transducers based on short-time Fourier transform (STFT). The measurement of wind speed was performed by estimating the ultrasonic transit-time (ToF). For this purpose the estimated ToF was used the technique of digital signal processing, based on the STFT. The ultrasonic signal detection was performed by setting a threshold level equivalently half the maximum power for the operating frequency of the ultrasonic transducers. Simulation results are presented considering the influence of the additive noise Gaussian, and estimation of ToF considering the evaluation of STFT windows using Hamming, Hanning and Bartlett.