Patent ID: 7389093

Claim:
A call apparatus for bidirectional communication for dialog by voice over a network, said call apparatus comprising, as a transmitting system, first gain adjustment means for multiplying voice signals from voice transducing means with a variable gain coefficient to adjust the gain, said voice transducing means transducing the voice, as picked up, into electrical signals; sound data storage means having stored therein sound data in terms of a file as a unit; decoding means for decoding file-based sound data read out from said sound data storage means; second gain adjustment means for multiplying a decoded output from said decoding means with a variable gain coefficient to adjust the gain independent of the first gain adjustment means; synthesizing means for synthesizing a first output from said first gain adjustment means and a second output from said second gain adjustment means; encoding means for encoding a synthesized output of said synthesizing means; and transmitting means for transmitting an encoded output from said encoding means over said network; said call apparatus also comprising, as a receiving system, receiving means for receiving an encoded output, transmitted from transmitting means of another call apparatus over said network; decoding means for decoding encoded data received by said receiving means; third gain adjustment means for multiplying a decoded output from said decoding means with a variable gain coefficient to adjust the gain; and sound outputting means for transducing an output from said third gain adjustment means into sound to output the sound.