  We present the results of direct numerical simulation of three-dimensional
acoustic turbulence in medium with weak positive dispersion. It is shown that
at the beginning of the long-wavelength region in the turbulence energy
distribution in the $k$-space, there are formed jets in the form of narrow
cones. At larger wavenumbers, the cones broaden, and the distribution
accordingly tends to isotropic. In this region of wavenumbers, the
angle-averaged turbulence spectrum acquires a power-law character, $E(k)\propto
k^{-\alpha}$, with the exponent close to $3/2$, which corresponds to the
Zakharov-Sagdeev weak acoustic turbulence spectrum.
