A method of expressing the amplitudes of complex non-periodic signals such as speech.

 A method of expressing the amplitudes of complex non-periodic signals such as speech.


" Volume  "

The reverberation time of a 184.2 cubic meters broadcast studio is 0.84 sec. Find the absorption effect of the materials used in metric sabines.

 The reverberation time of a 184.2 cubic meters broadcast studio is 0.84 sec. Find the absorption effect of the materials used in metric sabines.


"  35.3   "


formula:
 T60 = 0.161xV
STxAave

V-- volume unit m^3

ST-- second unit s

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please see the link: http://www.soundonsound.com/sos/sep98/articles/acoustic_3.html

A diagram which shows the relationship between RF signal phase and maximum bunching of the electron beam in velocity-modulated devices.

 A diagram which shows the relationship between RF signal phase and maximum bunching of the electron beam in velocity-modulated devices.



" Applegate Diagram  "

Single sideband full carrier emission type.

Single sideband full carrier emission type.

 H3E

What is the reference tone level for dBrn?

What is the reference tone level for dBrn?

 -90 dBm

Actual height of antenna should be at least, " quarter wavelength "

Actual height of antenna should be at least, " quarter wavelength "

Psophometer , is a device that measures the internal open circuit voltage of an equivalent noise generator having an impedance of 600 ohms and delivering noise power to a 600 ohms load.

Psophometer,  is a device that measures the internal open circuit voltage of an equivalent noise generator having an impedance of 600 ohms and delivering noise power to a 600 ohms load.