Hello
In a project with DSP, I can use both lookup table and c-block.
First, which element has the fastest speed
And after code generation and putting it on the IC, which one works better?
You must be specific to find the answer.What is the size of your lookup table?How do you implement this table (what algorithm do you use) in a C code?
Thank you for your reply
There are 3 variables in the lookup table
And in c-block, if is used 3 times
Hello againThank you for your replyThere are 3 variables in the lookup tableAnd in c-block, if is used 3 times
Hello again
It would be a not-so-small project just to compare those 2 methods.
The size of the table:
- How much memory space would this table take in the DSP chip?
- Does your DSP have sufficient space for the resolution you want?
- What kind of method you will use to prevent the oscillation with the noise level of the input signals?The C code:
- How does your algorithm represent the nonlinearity? Linear calculation does not need lookup tables because the calculation is simple. But if you need to use lookup table, you definitely deal with nonlinearity.
- How complicated is your algorithm?
- How long does it take your code in the DSP to performing the computation?
