Hertz
The term used for the measure of frequency is "Hertz (Hz)".
frequency meter is used to measure the frequency of unknown frequency signal.
Frequency counter
You think probable to a frequency meter.
The unit used to measure the frequency of sound is hertz (Hz).
An oscilloscope or a frequency counter can be used to measure frequency. Oscilloscopes display the waveform of a signal and can measure its frequency, while frequency counters directly count the number of signal cycles per second to determine frequency.
Hertz means cycles per second. That is its' frequency.
Hertz (Hz)
weins bridge
Hertz is used to measure the frequency of a wave, which represents the number of complete wave cycles that occur in one second.
The equation used to measure wave speed is: Wave speed = frequency x wavelength
Richter