Questions tagged [rms]

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How to produce a noise spectrum from an rms velocity specification?

For a dynamic model I am looking at the appropriate input to analyse the performance under the influence of floor vibrations. The norm is an ISO VC-C floor spectrum as displayed in the image. However, ...
Jan's user avatar
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Discrepancy between time & frequency domain RMS magnitude

I'm looking at complex baseband RF at a sample rate of 2.56 MHz. I've plotted the FFT of the entire spectrum, a 16 kHz segment of that spectrum, and the output of 160 decimation low pass filter that ...
Deepstop's user avatar
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Spectrum and Fourier transform of a sine wave

Take for example: $x(t)=A\sin(2\pi f_0t)$. The Fourier transform of this signal is $\hat{s(f)}=\frac{A}{2i}(\delta(f-f_0)-\delta(f+f_0))$. If we want to represent the spectrum of the signal we would ...
fi-xgamex do's user avatar
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Vrms, RF power and PAPR of Random bit string Votlage signal

I have a random bit string which is being generated by an arbitrary waveform generator (AWG), being amplified by an RF amplifier to drive an optical phase modulator for binary phase shift keying ...
generic purple turtle's user avatar
1 vote
2 answers
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How to minimize RMS calculation error due to sampling?

Say I have a sinusoidal signal of 49.93 Hz, which is sampled at 16 kHz. A period of the input signal would then contain 16000/49.93 = 320.448 samples. Naturally, the number of samples has to be an ...
Vic Lo's user avatar
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In the RMS bandwidth equation, why do we have the energy of the signal in the denominator?

In the following equation: $$B_{\rm rms}^2 = \frac{\displaystyle\int_{-\infty}^\infty f^2\lvert G(f)\rvert^2df}{\displaystyle\int_{-\infty}^\infty \lvert G(f)\rvert^2df}.$$ It is not clear why do we ...
FISqrt's user avatar
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2 answers
143 views

Calculating DC from signal avg or rms value required?

If we want to calculate a dc value of any given signal, should the dc value be RMS or average value?
Ifte Siam's user avatar
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For PCM audio samples, can values like max RMS and frequency magnitude be estimated?

I am using OpenAL and a loopback driver to grab PCM samples of whatever audio is being played on the computer in realtime. The PCM data is 1024 samples of 16 bytes (C# ...
McGuireV10's user avatar
2 votes
1 answer
262 views

Approximating average power with RMS vs RMS^2: Why do we even take the root?

I'm slightly confused by various statements around energy / power of PCM audio. Specifically, I came across two seemingly contradicting statements in these two answers: Answer 1 states: [...] you can ...
bluenote10's user avatar