24 Oct
2002
24 Oct
'02
12:05 p.m.
nikodimka wrote:
You can calculate your tranformation for the input
signal S(x_i) once
And the same transformation for S(x_i)+1 again.
I mean two similar input signals differing in one bit of value.
So when you have two output saignals you can calculate
the error due to aliasing: abs( F(S(x_i)) - F(S(x_i)+1) )
(Or is it just a trivial thing and it doesnt work and
this is not what you discuss?)
it seems to me you're referring to what is commonly called
quantization error. quantization is rarely an issue with
32-bit float DSP, less so with doubles.
tim