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Frequency and Sound Meters

Frequency and Sound Meters

By Aurthur Mclelland

Now as in last week we talk EVPs here is two pieces of equipment you can use prove you evps are true one is a frequency meter and a sound meter and here is why.

A frequency meter is an electronic instrument that displays the frequency of a periodic electrical signal. Frequency meter, device for measuring the repetitions per unit of time (customarily, a second) of a complete electromagnetic waveform. Various types of frequency meters are used. Many are instruments of the deflection type, ordinarily used for measuring low frequencies but capable of being used for frequencies as high as 900 Hz. These operate by balancing two opposing forces. Changes in the frequency to be measured cause a change in this balance that can be measured by the deflection of a pointer on a scale. Deflection-type meters are of two types, electrically resonant circuits and radiometers. An example of a simple electrically resonant circuit is a moving-coil meter. In one version, this device possesses two coils tuned to different frequencies and connected at right angles to one another in such a way that the whole element, with attached pointer, can move. Frequencies in the middle of the meter’s range cause the currents in the two coils to be approximately equal and the pointer to indicate the midpoint of a scale. Changes in frequency cause an imbalance in the currents in the two coils, causing them and, in turn, the pointer to move. Another type of frequency meter, not of the deflection type, is the resonant-reed type, ordinarily used in ranges from 10 to 1,000 Hz, although special designs can operate at lower or higher frequencies. These work by means of specially tuned steel reeds that vibrate under the effect of electric current; only those reeds that are in resonance vibrate visibly, however.

A sound level meter or sound meter is an instrument that measures sound pressure level, commonly used in noise pollution studies for the quantification of different kinds of noise, especially for industrial, environmental and aircraft noise. However, the reading from a sound level meter does not correlate well to human-perceived loudness, which is better measured by a loudness meter. The current international standard that specifies sound level meter functionality and performance is the IEC 61672-1:2013.

On top of all that the last thing you need is a camera recording all of them together at the same time and set to the same time I know it is pricey but if we all try a little harder and put up all the information with the evp it make it more proof that no one can disprove.

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