Hey, thanks a lot Dave. This is exactly the info I was looking for. Acoustic testing is brand new for me so I really appreciate this.
Unfortunately this software is new to everyone and all the data I have is in screenshot mode only due to time constraints.
A few questions, since you're...
Hi all,
Havent turned to this forum in quite some time but hoping you might be able to explain to me my y-axis in the audio FFT I have below. How should I understand the units of dB/20u Pa? Ideally I want to convert this into dBa or something, I'm just not sure how to get a "feel" for this...
If I hava non periodic waveform and I divide it into 3 cycles is taking the RMS of each cycle and averaging the same thing as taking the RMS of all 3 cycles at once?
i feel like I am being misunderstood. Forgetting hypotheticals and taking one specific example. I have a lamp, plug it into a wall and float it from the middle of a ceiling. Can I determine the leakage of the lamp (diff between line and neutral) by measuring Earth current?
i understand that's how RCDs, GFCI's etc work and that's obviously the right way for that reason. What I'm saying is that if you want to measure the amount of leakage your device inherently has, it should be sufficient to measure Earth current (provided that the *device is isolated from ground*...
I'm trying to measure inrush current by looking at the voltage of a 0.1ohm resistor in the line within the first 50uS of flipping a relay to a variable AC source.
Problem is that the new AC source that I have (chroma 61605) apparently has an impedance issue which prohibits good inrush...
Come again? FT - Fourier transform? What do you mean?
My understanding is that I'm looking at something directly measured, rather than 'computed' in that sense
Being interviewed for a position: the guy interviewing me cut me off with something like "so you were looking at an FFT" (I was talking about gain in k-band). I started to correct him but he was adamant about me "looking at an FFT" so I kinda let it go.