公开(公告)号：KR1020000036621A

公开(公告)日：2000-07-05

申请号：KR1020000014901

申请日：2000-03-23

Applicant: 실리콘프로(주)

Inventor： 박종영

IPC: H03M1/12

CPC classification number: H03M1/822 ,  G10L19/0019 ,  H03M3/50 ,  H03M2201/932

Abstract: PURPOSE: A speaker driving low power audio digital/analog converter is provided to reduce the power consumption and to improve the productivity by minimizing an analog circuit. CONSTITUTION: A digital/analog converter has a volume controller(2), an interpolator(3) a delta-sigma modulator(4), a pulse modulator(5), a switching circuit(6), and an RLC manual filter(7). The digital/analog converter further comprises an analog volume controller, an analog delta-sigma modulator, and a digital mixer so as to output the signal by modulating a pulse width by mixing analog inputs. A decimator is provided to convert the output signal into a digital signal. The digital/analog converter changes a sampling frequency including the number of bits and over-sampling ratio.

Abstract translation: 目的：提供驱动低功率音频数字/模拟转换器的扬声器，以减少功耗，并通过最小化模拟电路来提高生产率。 构成：数字/模拟转换器具有音量控制器（2），内插器（3），Δ-Σ调制器（4），脉冲调制器（5），开关电路（6）和RLC手动滤波器 ）。 数字/模拟转换器还包括模拟音量控制器，模拟Δ-Σ调制器和数字混频器，以便通过混合模拟输入来调制脉冲宽度来输出信号。 提供抽取器以将输出信号转换为数字信号。 数字/模拟转换器改变包括位数和过采样率的采样频率。