Patent ID: 7933548
Filing Date: 2011-04-26
Classification: G10L,H04M

Abstract:
1. A cellular phone which has a reception unit for receiving a signal including frame type information which represents on a frame basis whether a frame in question is a voice signal or pseudo noise information corresponding to a case of no relevant voice signal existing, a codec circuit for, when said frame type information included in said signal received by the reception unit represents said voice signal, decoding the voice signal, while when the frame type information represents said pseudo noise information, generating a pseudo noise signal corresponding to the pseudo noise information, and a sound unit for generating, upon input of said voice signal decoded by the codec circuit, a voice corresponding to the voice signal, while upon input of said pseudo noise signal generated by the codec circuit, generating a pseudo noise corresponding to the pseudo noise signal, wherein said codec circuit includes a receiving call sound volume adjustment unit which, when said frame type information represents said pseudo noise information, sends said pseudo noise signal generated to said sound unit with the signal level reduced by a predetermined amount, while when said frame type information represents said voice signal, sending said voice signal decoded to said sound unit with the signal level unchanged.