High Resolution Signal Converter for Multimedia Systems

In this paper, we proposed a high-resolution signal converter for multimedia systems. This design investigates the high-order multimedia converter before digital to analog converter circuit. The high-resolution signal converters of the digital signal processing modulation system consist of dynamic range and signal to noise ratio. The spontaneous noise of signal processing modulators should be eliminated or suppressed. Therefore, a digital signal processing modulation converter for multimedia system is designed to reduce the spontaneous noise. This signal converter includes a dynamic range adjuster, a high-order integrators feedback modulator and a multi-stage interpolator. Dynamic range adjuster that eliminates the redundant signal effectively is necessary for multimedia system. The adjuster adds fitting dynamic signal before the quantizer and minimizes the distortion. In order to prove the quality of the design, we program whole system into FPGA. After measuring, the system has a linear signal to noise ratio and high-resolution signal in a practical multimedia case.