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Altera_Forum
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9 years ago

I get a big noise when I echo the audio data from microphone

I designed a audio system in Qsys. I read the fifo data from the microphone input and write it to the audio write fifo. Although I can hear the microphone echo, it also generate a very big noise. I c...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

I recommend using a triangle wave to test your input function. It is easier to verify that the received data is correct. You should use a function generator connected to the ADC input. Don't forget to get the impedance matched. Once you have a clean triangle wave going to your audio input you should be able to test your data input function.