Search found 4 matches

by rtdavey
Wed Feb 15, 2012 3:45 pm
Forum: Boxes
Topic: Spectral analysis box query about amplitude and power
Replies: 6
Views: 10177

Re: Spectral analysis box query about amplitude and power

Apologies... upon further investigation I have found that the Simple DSP box can be configured for different streams, including spectrum.

:D
by rtdavey
Wed Feb 15, 2012 3:13 pm
Forum: Boxes
Topic: Spectral analysis box query about amplitude and power
Replies: 6
Views: 10177

Re: Spectral analysis box query about amplitude and power

Sorry to continue with this thread again... but I am having a further difficulty with spectral analysis and amplitudes. I want to square the spectral amplitudes to make them spectral powers before averaging them... but cannot find a suitable mathematical box for this. I tried using a Simple DSP box ...
by rtdavey
Wed Feb 15, 2012 2:37 pm
Forum: Boxes
Topic: Spectral analysis box query about amplitude and power
Replies: 6
Views: 10177

Re: Spectral analysis box query about amplitude and power

Thanks Jozef That answers all my questions for me... and it means that the Power Spectrum Display box is really a Spectrum Amplitude Display box. I think to be more precise I will square all my spectrum amplitude values and then use the Spectrum Average box to give me the spectrum power indicator th...
by rtdavey
Wed Feb 15, 2012 1:29 pm
Forum: Boxes
Topic: Spectral analysis box query about amplitude and power
Replies: 6
Views: 10177

Spectral analysis box query about amplitude and power

I am designing for EEG analysis and want to use the Spectral Analysis box. I see it has amplitude output, as well as phase, real and imaginary outputs. I want to make use of the power in the spectrum, which is amplitude squared. But I am confused by the terminology used in the Spectral Analysis box ...