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Published on Oct 20, 2011
Under the guidance of a tutor from the National Theatre, she [Margaret Thatcher] underwent a training programme which included special humming exercises aimed at lowering the pitch level at which she formwely spoke. From tape recordings of speeches made before and after receiving tuition a marked difference can be very hear. When there are played through an electronic pitch analyser, it emerges that she achieved a reduction in pitch of 46 Hz, a figure which is almost half the average difference in pitch between male and female voices. (Atkinson, 1984, p.113)
from Anne Carson - The Gender of Sound (Glass, Irony and God)