... over sampling ratios. As mentioned before, this attenuation is due to NRZ sampling. Notice the attenuation near 20KHz: Black: X2 over sampling Red: X4 over sampling Blue: X8 over sampling ... Shannon, the father of information theory. Nyquist Sampling Theory: A sampled waveforms contains ALL the information without any distortions, when the sampling rate exceeds twice the highest ... filtered audio Red: filtered aliased energy Sampling Theory Page 19 Copyright Dan Lavry, Lavry Engineering, Inc, 2004 Sampling Theory For Digital Audio By Dan Lavry, Lavry Engineering,...