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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

Check your data sheet. You must use a word length that matches the audio output chip. Most but not all are 16 bits. However, you cannot assume it is 0 to 64K. Min and max might be +/- 32K. Again check the data sheet.