Honored Contributor
Honored ContributorWhen testing with a ramp, were you reading the values from ROM similar to your WAV data? If not, you may want to try this to prove that your routines for reading the data from the ROM are working correctly.
If after testing your ROM routines you still have a problem, the issue is most likely your WAV conversion. I already suggested double checking the endianness. Perhaps your conversion is not handling two's complement correctly? What WAV files are you testing with? Maybe you could generate some simple WAV files of your own with a program such as Audacity so that you can more easily verify the results.
