In the testbench I set the reset signal to 0 so that I only expect to see the results of the "else" option. But at the beginning of the waveform the results of
AUDIO_OUT_VALID <= '1';
AUDIO_OUT <= AUDIO_IN;
are showing even though RESET = 0 throughout the entire time. I don't see how this can happen. I would be happy to provide more info if needed. Thanks in advance!