Forum Discussion
Altera_Forum
Honored Contributor
Honored ContributorUPSAMPLING BLOCK Problem
Hi guys, has anyone experiences with the DSP Builder "UPSAMPLING BLOCK" ??? I want to use it but there is one big Problem: The Up Sampling block increases the output sample rate from the input...
Altera_ForumHonored Contributor
Honored ContributorWhat you want then is not upsampling but "sample and hold". You don't need dsp builder to do that for you. All you need is an output sampling rate 5 times the input sampling rate. Then for every input sample produce 5 output samples that equal current input using basic logic.
True upsampling is to interpolate the input. One method is to insert zeros then low pass filter to remove freq copies introduced by zero insertion.
