Word: pitched
(lookup in dictionary)
(lookup stats)
Dates: during 1930-1939
Sort By: most recent first
(reverse)
...apparatus is a refinement of instruments already in use for measuring the frequency or "pitch" of sounds. These older instruments have the disadvantage that they are not sensitive enough to catch the quick transitions in speech, often lasting for only a fiftieth of a second, which this new apparatus is easily capable of recording...
...other great disadvantage of the old instruments is that the presence of strong overtones might completely obscure the fundamental frequency which the ear catches as the "pitch" of the voice...
...deaf person wants to regulate the fundamental tone of his speaking voice. He can only do this by regulating the "pitch." The new machine, by employing a distorting amplifier and a sound filter, can segregate and record the fundamental pitch even when it is so obscure in the original speech as to be hardly detectable by the usual instruments...
...using the machine, the deaf person talks into a microphone and the sounds of his voice are changed into electrical energy. This energy is then converted into impulses which can be measured in terms of "pitch...
When operated in special electrical hookups the apparatus can also be used to record directly the vibration frequencies of rotating machinery or for monitoring the frequency of broadcasting stations. The apparatus registers not only the fundamental pitch of the voice but also of notes played on musical instruments...