Hi All,
i want to build a peak detektor with a Usrp(LFRX),so i hope some of
you can give me some hints about the peak detector modules ?
As i know, there are 3 peak detector:
- Detect Peak
- Peak Detector
- Peak Detector2
Therefore i have some questions:
To 2.) What allowed values for ?
And what does this mean ? Which unit ?
What is Alpha, and which are allowed values ?
If the peak detector gets a peak, what does it spit
out ?
Which are the allowed values for <TH Factor Rise/Fall>,
is this in db or a linear factor ?
Is there any example for a peak detector ?
Is there also a peak detector with a complex input ?
Regards Markus
Markus F. <feldmann_markus gmx.de> writes:
Therefore i have some questions:
To 2.) What allowed values for ?
And what does this mean ? Which unit ?
What is Alpha, and which are allowed values ?
If the peak detector gets a peak, what does it spit
out ?
Which are the allowed values for <TH Factor Rise/Fall>,
is this in db or a linear factor ?
I studied some of the theory to the EWMA(exponentially weighted moving
average),
so i think the can be easily deactivated by setting this to
0.
As i understand, the tries to wait until inputs from
the
future are done and take this into the computing of the average ?
Because the description of the Peak Detector talks about i
think the
is a factor meaningfully greater than <1.0> ?
The alpha seems to weight the input values, which are be computed for
the
average, but i think it also results in a average computing of a longer
time ?
The alpha should be meaningfully 0 < alpha <= 1.0 .
Is this correct ?
A other Problem is that the Peak Detektor freezes the graphical
elements,
but i don’t get any overrun/underrun.
I have got a decimation of 256 and a sample_rate of 250k.
Are there known Problems with the Peak Detector ?
Regards Markus