[sdiy] SDIY MATH GOALS--need real help!

[Tom Wiltshire]

On 27 Feb 2009, at 03:24, Matthew Smith wrote:

> Quoth Dan Snazelle at 2009-02-27 12:30...
>> i feel i have gotten about as far as i can in understanding many  
>> electronic books and topics in the last few years without knowing  
>> ANY math beyond basic pre-algebra. I never took anything past  
>> algebra one in high school and that was in 1992 and i dont  
>> remember any of it.
>
> Dan, I truly sympathise - I have a similar problem.

Yeah, another sympathetic ear here too. My maths is so rusty that the  
cogs don't really turn at all any longer. I was better at this stuff  
when I was 15 than I am now. Like you, I'd like to learn more,  
particularly the complex-numbers filter theory stuff.

If I could work out how to get from digital filter coefficients to  
frequency responses, I'd be able to write software to design my own  
digital filters, and that'd open up a number of new avenues to me. At  
the moment, digital filters are a bit of shot in the dark.

T.