Can anyone please recommend the best lookup table generator usable in Windows 98 for sinewaves of varying amplitudes?
Thank you,
Robert
- posted
19 years ago
Recommend LUT generator
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- posted
19 years ago
Excel's not bad. Cheers, Alf
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- posted
19 years ago
Ehhr, Excel?
Meindert
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- posted
19 years ago
Why on earth would you need more than one look-up table for sinewaves?
It's almost guaranteed to be easier to just multiply the amplitude into a single, unit amplitude sine wave table look-up result, than to waste lots of memory to have a full look-up table per amplitude.
As to what the "best" generator for such tables might be, that's impossible to answer without knowing what what "good" means to you, in this context. I'ld use gnuplot and Unix'ish textutils to do this.
-- Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de) Even if all the snow were burnt, ashes would remain.
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- posted
19 years ago
You need to define "best". I use Goldwave. Peter
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- posted
19 years ago
I use python for that sort of thing. Works under Windows too.
-- Andrew
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- posted
19 years ago
I use C.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
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- posted
19 years ago
MathCad. Keeps the maths human readable too.
Steve
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- posted
19 years ago
Use the same language that you use on the target (C, for me). Then, test the LUT client code (are we interpolating correctly between lookup values? are we handling all the exceptional cases correctly?) on your desktop machine. Exhaustive testing is usually much easier (read: more likely to be done) on the desktop than on your target. Desktop testing also identifies good test values to put through the target code - do that too. E.g. I did a 3rd order by 4 element LUT (35 "bytes" of table values total including the addwf PCL instructions) implementation of antilog on a PIC last year. I would probably still be working on it if I hadn't determined the table length-by-width requirements on excel and prototyped the code on the desktop.
Bob