- #1
btb4198
- 572
- 10
when using the FFT for DSP should I convert the A to D samples back into a Voltages ?
so
A to D sample = sample voltage * ( bits / max Voltages)
so
sample Voltage = (A to D sample ) *(max Voltages/ bits)
that is right, right?
anyhow should I keep the samples as digital samples or convert them to analog samples
before I run them into the FFT?
why or why not?
I kind of think it should matter... but I do not know . I am new to this.
I do think that the A to D / mic on a computer might remove all the negative numbers, but i do not know is you would get negative numbers from a microphone...
do you ?
so
A to D sample = sample voltage * ( bits / max Voltages)
so
sample Voltage = (A to D sample ) *(max Voltages/ bits)
that is right, right?
anyhow should I keep the samples as digital samples or convert them to analog samples
before I run them into the FFT?
why or why not?
I kind of think it should matter... but I do not know . I am new to this.
I do think that the A to D / mic on a computer might remove all the negative numbers, but i do not know is you would get negative numbers from a microphone...
do you ?