Pitch (frequency) – shown by the spacing of the waves displayed. The closer together the waves are, the higher the pitch of the sound. Diagrams 1 and 2 show two sounds with the same frequency ...

A high pitch sound has a high frequency and makes the air vibrate quickly , so the wave peaks are closer together. A low pitch sound makes the air particles vibrate more slowly and so the peaks ...

Results The prevalence of speech-frequency and high-frequency hearing ... using the paired t-test, and the Bonferroni correction for pairwise comparisons. Logistic regression was used to estimate the ...