Vocal register
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Vocal registers
From highest register to lowest register
Whistle
Falsetto
Modal
Vocal fry
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A labeled anatomical diagram of the vocal folds or cords.A vocal register in the human voice is a particular series of tones, produced in the same vibratory pattern of the vocal folds, and possessing the same quality. Registers originate in laryngeal function. They occur because the vocal folds are capable of producing several different vibratory patterns. Each of these vibratory patterns appears within a particular range of pitches and produces certain characteristic sounds.[1] The term register can be somewhat confusing at it encompasses several aspects of the human voice. The term register can be used to refer to any of the following[2]:

A particular part of the vocal range such as the upper, middle, or lower registers.
A resonance area such as chest voice or head voice.
A phonatory process
A certain vocal timbre
A region of the voice which is defined or delimited by vocal breaks.
A subset of a language used for a particular purpose or in a particular social setting.
In linguistics, a register language is a language which combines tone and vowel phonation into a single phonological system.

Within speech pathology, the term vocal register has three constituent elements: a certain vibratory pattern of the vocal folds, a certain series of pitches, and a certain type of sound. This view is also adopted by many vocal pedagogists


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Note added at 2 hrs (2008-10-13 21:22:00 GMT)
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Language Sciences : Language and sexuality - Published by Elsevier - [ Traducir esta página ] Similarly, female opera singers often feel that their vocal register is somewhat reduced and their voice lessbrilliant when they are

Ian Geller, baritone, composer, conductor, voice teacher, vocal ... - [ Traducir esta página ] Alongside the faultless interpretation, it was above all the voluminous vocal register of the singer which rendered the performances an unclouded joy for ...
iangeller.com/page13.

Sound distance to measure Speed of Sound
http://arts.ucsc.edu/EMS/Music/tech_background/TE-01/soundSp...
Speed of Sound
You can measure the speed of sound the same way you measure the speed of a runner, with a stopwatch on a closed track.

* Find a place where you can hear a good echo, and stand a known distance from whatever the sound is reflecting off of.
* Fire a starter's pistol and start the stopwatch. Stop the watch when you hear the echo.
* Divide 2 times the distance (it's a round trip) by the time to get the speed.

At 21 degrees C (70°F), you should get 344 meters per second, or 1129 ft per second. At freezing, the numbers are 331 m/s or 1087 ft/s. The proper formula for the change in speed due to temperature is:

Where T is degrees Celsius. The works out to about a 0.1% change per degree Fahrenheit.

The Speed of sound in water is 1480 m/s or 4856 ft/s. More than 3000 miles per hour.

There is a project under way to take the earth's temperature by measuring the speed of sound between the USA and Australia.