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Implemetation (10*Log10) in fixed point

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Author
Mohammed Hameed
Posted
22-Feb-2005 13:51 GMT
Toolset
C51
New! Implemetation (10*Log10) in fixed point
Hi everybody

I want to implement 10*log10(of something)in fixed point DSP. Is that way to take look up table and then process or is there any other optimal solution for this. please provide some suggestion which are of utmost valuable for me.

thanks

Hameed
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Author
Hans-Bernhard Broeker
Posted
22-Feb-2005 15:09 GMT
Toolset
C51
New! RE: Implemetation (10*Log10) in fixed point
or is there any other optimal solution

There are plenty of other possible approaches to this problem. Whether or not they're optimal depends on the application's needs. It's impossible to way what's "optimal" without having a definition of "good".

What's more, most of the possible solutions are independent of the platform, i.e. this is not the right place to ask this question.
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Author
Mike Kleshov
Posted
22-Feb-2005 16:35 GMT
Toolset
C51
New! RE: Implemetation (10*Log10) in fixed point
There are many different ways to calculate the logarithm of a number. For example, here is an overview:
http://yacas.sourceforge.net/Algochapter5.html#c5s3
Which one is "optimal" depends on many factors: range of input values, required precision, instruction set of your DSP etc.

- mike

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