Audio DAC (2) June 2, 2016Ham Radio BlogsFPGAphoenix O.K. It works. The value of an 8-bit counter and 24 zeros are fed into a dac with Fs = 48kHz. (Note that 48kHz divided by 256 makes 187.5Hz.) This figure shows that the dac has a eight times oversampling FIR interpolation filter.