Disclosed is a mobile communication terminal which is provided with an equalizer function of audio equipment to adjust a timbre of transmittingreceived speech sounds so as to satisfy a great number of users having various individualities and tastes simultaneously. The LCD device element is capable of changing a frequency modulation range freely. The speech signal is then segmented into pitch-synchronous frames. The riser element and the support element are each disposed within a casing formed at least in part with a stretch material.