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a disturbance, which supplies the oscillations to be amplified; a means of generating sound or other oscillatory fluid Brownian motion; a means for feedback of that oscillatory motion as a disturbance to the input of the amplifier. Whistles are in this category. There are several ways to describe the feedback process.
Dec 4, 2014 · The reflected wave returns to the aperture, where it interacts with the turbulence. If the turbulence is "back in phase" with the pressure wave, the action reinforces itself - and a tone is created. If there are too many different path lengths (or not enough reflections), then there is no particular frequency that is favored, and instead of resonance you get mostly white noise - a "hiss".
- 1 Strategies to Reach A Distant Listener/Audience
- 2 Influence of Language Phonology in Singing
- 3 The Sung Mode of Whistled Speech
5.4.1.1 Control of the Source
In whistling and professional singing, mastering the technique of production requires a phase of learning in addition to the implicit acquisition that people acquire by growing up in linguistic communities or families that extensively use singing or whistled speech. Shouting is generally developed from birth without any particular distinct extra learning. In each of these three speech registers, an efficient emission relies on a homogeneous, powerful, relaxed and precise control of both the a...
5.4.1.2 From Standard to Shouted Speech… Toward Whistles
In shouting, to increase the range of ordinary speech or to overcome noise, individuals adjust their voices by raising amplitude levels in a quasi-subconscious way. During this vocal effort, called the “Lombard effect” (Lombard 1911), the spoken voice progressively passes into the register of the shouted voice. Effort is also intensified with the tendency to prolong syllables, to reduce the flow of speech and to increase the fundamental frequency. There is a large body of literature on this p...
5.4.1.3 Vowel Lengthening in Singing
The sung form of speech is also characterized by an increase in vowel duration in most of the singing styles. This results from the combination of many parameters that influence production in the singing voice. First, artistic choices justify this strategy, for example, to control the homogeneity of timbre quality, especially in the bel canto technique (Woisard-Bassols 2001). Moreover, a slower tempo is often inherent to music, resulting in a slower rate of speech. Next, articulatory movement...
In a similar manner to whistled speech, the contributions for encoding the word meaning of both the Fo and the formant distribution may influence the composition and the interpretation of songs. However, due to the complex frequency spectrum of the singing voice, testing this aspect is less simple. Furthermore, other parameters must be considered. ...
The sung/singing mode of whistled speech is a practice that consists of emulating the sung voice while producing a whistled sentence. It is not an aspect extensively developed in all of the cultures that use whistled speech. It seems to be much more common in tonal languages, likely because such languages partly encode melody and meaning in singing...
- Julien Meyer
- julmeyer.lab@gmail.com
- 2015
Let's consider the specific type whistle shown in the question. When we blow the whistle, air is forced to rush out through the narrow opening. The flow of air at the center of the stream is significantly faster than the neighboring air close to the main stream. If the air stream is easily deflected (unstable), vortexes are generated.
Jul 28, 2022 · The vibrations, and hence sound, are transmitted in the form of a wave, known as a sound wave. The particles vibrate in the same direction as the wave propagates. Such type of wave is known as a longitudinal wave. The sound wave carries energy and keeps traveling until it loses energy. Sound requires a medium to propagate.
13.1.1 Introduction. Wave phenomena are ubiquitous, so the wave concepts presented in this text are widely relevant. Acoustic waves offer an excellent example because of their similarity to electromagnetic waves and because of their important applications. Beside the obvious role of acoustics in microphones and loudspeakers, surface-acoustic ...
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during a passing sound wave. There is plenty of confusion about how to measure sound amplitude. Sound intensity is the product of pressure and velocity and reflects the power (energy/time) of the sound wave: Intensity = pressure x velocity = power / area Near the sound source, intensity decreases with the square of the distance from the source.
