The trace on 3 comes from a sound with a higher frequency than the one on 2. So sounds 2 and 3 are the same volume (amplitude), but 3 has higher pitch (frequency).

Let’s start our expla nations of loudspeaker measurement graphs with the most basic graph of a speaker’s behavior: the frequency response. Sometimes this is referred to as the amplitude response as ...

Frequency, wavelength, amplitude and wave speed You need to know about these quantities used in waves - what they mean, the symbols used for them and the units used to measure them.

I tested a sound frequency app to see if sound therapy would help ease my chronic pain. Here's how well it worked for me (and what the science says).

Room EQ Wizard’s waterfall graphs show how long it takes for sound to decay per frequency, but this is NOT what is being displayed in Audioholic’s waterfall graphs in our loudspeaker reviews at all.