Method and apparatus for analog-to-digital converting signal modulated in frequency domain

摘要

A digital-to-analog converter is provided for converting a digital input signal modulated in a frequency domain such as a delta-sigma modulated digital signal recorded in conformity with the DSD scheme to an analog output signal. The converter comprises a digital filter for filtering a digital input signal to generate a digitally filtered output signal comprised of a second number (N) of bits, and a digital-to-analog converting unit for converting the digitally filtered output signal to an analog form to generate an analog output signal.