What Does "RMS" Stand for in a Sound System?

admin

In audio power, RMS stands for Root Mean Square, and it refers to the best value of the waveform. It is the measurement of continuous power that an amplifier can deliver. RMS only applies to AC signals.

RMS power is used in depicting the power of audio products. Power calculations are completed easily using RMS values since power, voltage and current for all AC circuits is given in RMS. However, calculation of RMS power vary with different companies, which sometimes makes it difficult to use RMS power to rate audio power. Another way to rate power is by using peak, or the highest voltage a waveform can reach.

admin

The Voltmeter RMS option computes the true Root Mean Square value of the waveform, over an integer number of waveform cycles. RMS is computed by taking the square of each data point, summing all the squares together, dividing by the number of data points, and then taking the square root of the result.

The RMS computation assumes that enough data points are included to get a good representation of the average value of the signal. For low-frequency repetitive waveforms, highest accuracy is obtained when the computation includes an integer number of cycles. In order to obtain this, the trace must be Triggered and the 1024 trace samples must include at least one full cycle of the waveform. The lowest frequency you can measure this way is thus the sample rate divided by 1024:

admin

http://www.daqarta.com/dw_ll0m.htm

admin

https://www.audiorecording.me/un ... nition-details.html