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CCS/TMDX5505EZDSP: Noise Cancellation Project / CCS / AIC3204

Part Number: TMDX5505EZDSP

Tool/software: Code Composer Studio


I have a project to make, using the C5505 eZdsp USB Stick to output the input audio but every sample needs to be reversed, if the sample is "1" the output to sample needs to be "-1"

The ideia is a Noise Cancellation system. I am using the example test file AIC3204aic3204.rar .(the example ir rar) 

Sum of waves equals zero sound  

Imagine the input in red, and the output in blue. Thats what i am trying to do. But i have 0 ideas how to do.

Someone could help me ? I know about the delay between input and output , the image is just a exemple.

Thanks and sorry about any orthographic error.