| 摘要 |
<p>PURPOSE:To contrive smallness in size lightness in weight of an equipment and improvement of productivity by decreasing necessary resolution in a D/A converter to a low value of 1-bit so that a chip area can be contracted in the case of forming the D/A converter by an integrated circuit. CONSTITUTION:A digital data of element waveform quantized into each 1-bit is oversampled and digital/analog converted by a data converting means 12. Since a synthesized voice is formed from the data of element waveform thus quantized into 1-bit by oversampling, necessary resolution for a D/A converter is decreased very low to 1-bit, so that in the case of forming the D/A converter by an integrated circuit, a chip area can be contracted without improving work accuracy.</p> |
