| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a communication terminal which can prevent nonconformities in sound, generation of echoes, and howling, even if conversation option equipment is used. SOLUTION: A plurality of voice quality modes are prepared, in response to conversation option equipment. Data stored in a ROM 6 are read, and the data are used by a central processing section 4 for controlling a digital equalizer 8, a noise compressor 9, a volume 10, an echo canceller 11, and a side tone adding circuit 12, to control the voice quality of conversation.</p> |
