| 摘要 |
<p>A speech coding apparatus includes an excitation quantization circuit (350; 355; 357; 450; 550; 470; 600; 650; 680; 700; 750; 780) which quantizes an excitation signal using a plurality of pulses. The position of at least one of the pulses is represented by a number of bits determined in advance, and the amplitude of the pulse is determined in advance depending upon the position of the pulse. <IMAGE></p> |
