41. The sample is tensioned between two hard points, mechanical vibration is induced and the fundamental frequency is measured. 42. The changes with the greatest effects towards feminization, based on current evidence are fundamental frequency and voice resonance. 43. Harmonic synthesis involves the creation of higher order harmonics from the fundamental frequency signals present in the recording. 44. The lujon is played with soft mallets, and produces a sound that is dominated by its fundamental frequency . 45. If the phase delay varies with frequency, harmonics may be sharpened or flattened relative to the fundamental frequency . 46. Vocoders often include a second system for generating unvoiced sounds, using a noise generator instead of the fundamental frequency . 47. It has also been used to determine the fundamental frequency of human speech and to analyze radar signal returns. 48. This is not to be confused with electronically changing the fundamental frequency , which is referred to as pitch shifting. 49. It is now widely accepted that the brain processes the information present in the overtones to calculate the fundamental frequency . 50. Let A and B be two periodic sounds with stable fundamental frequencies ( stimuli ) ffreq A and ffreq B.
