Do A stereo speaker produces a pure "B" tone, with a frequency of 247 Hz. What is the period T of the sound wave produced by the speaker? Macmillan Learning T = What is the wavelength Awater of the same sound wave as it enters some water, where it has a speed of about 1480 m/s? Awater = Aair hs What is the wavelength air of this sound wave as it travels through air with a speed of about 341 m/s? = 4 m E S