Does anyone know how to make a frame-based DMA ADC to DAC loop look seamless with no block affect at the edges. I am setting my ADC DMA for a frame of size 256 samples, as is the length of the DAC DMA frame. When looking at the output from the DAC I see that my edges are miss-matching at the frame boundaries. My sampling is around 100KHz and the signal at my ADC input is around 3.5KHz. Tried to speed up things and then slow them down to see whether it removes the edge but with no luck. Any ideas, anyone?