To reduce the scale of the operation means of a sound reproducing apparatus provided with a speaker array.

When speaker units SP are disposed in mirror symmetry, a DSP 10 has the ability of generating a parameter for signal processing only for a directivity pattern belonging to one of respective sectors obtained by bisecting a space that the speaker array 40 faces by a mirror symmetry plane. When the directivity pattern belonging to the other sector is instructed, the DSP 10 generates a parameter corresponding to the directivity pattern for which the directivity pattern is mirror-inverted to perform signal processing and supplies driving signal sample to each speaker unit SP obtained as a result to the speaker unit SP at a position for which the original speaker unit SP is mirror-inverted. Similar coping is possible when the speaker units SP are arranged in revolution symmetry.