Wavetek And Audio Cart - Equal Sound Level Steps
To illustrate the effect on the ear of successive changes of exactly 10 dB.
Audiocart with wave generator.
Setting the generator to a sine wave in the 100-1000 Hz region, the intensity can be changed up and down by 10 dB steps, covering about a 50dB range. Be careful not to exceed the maximum of either the loudspeakers or your ears.