Which frequency theory is appropriate for sounds that are lower than 1,000 Hz?

Frequency theory is particularly relevant for sounds that are lower than 1,000 Hz because it explains how the pitch of these sounds is perceived based on the rate at which hair cells in the cochlea of the inner ear fire action potentials. According to frequency theory, the frequency of sound waves causes the auditory nerve fibers to fire vibrations in synchrony with the sound waves themselves. As a result, if a sound wave has a frequency of 500 Hz, the corresponding auditory nerve fibers will fire at that same rate, allowing the brain to interpret the pitch accurately.

This theory is most applicable for lower frequencies where the volley principle can also come into play, reflecting how a group of neurons can work together to convey higher frequencies by alternating their firing. However, frequency theory itself primarily focuses on the direct correlation between the sound wave frequency and the rate of nerve firing.

Understanding frequency theory is crucial for grasping how we perceive lower pitches, making it the appropriate choice in this context.