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Understanding sampling rate in adau1446 evaluation board

Question asked by sss36 on Aug 26, 2013
Latest reply on Sep 12, 2013 by ColemanR



I want to use downsampling and upsampling in my algorithm.


I am doing some basic testing with sine tone. I generate sine tone with 500Hz with sample rate 48kHz. The output captured from DAC is 500Hz sine tone.


But If i generate same sine tone with 500Hz frequency with sampling rate 16kHz. The output captured from DAC is 1500Hz sine tone. I was thinking that the sine tone frequency will remain the same at 500Hz.


Is there any way I can change the sampling rate of whole system ADAU1446 and AD1938 to 16kHz?