lecture3

lecture3 - Part I Breathing for voice and speech production...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Part I Breathing for voice and speech production
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
How do humans produce sound? What is the point of this section? To determine how speakers can differ from each other, and the kinds of things they can vary that convey information to listeners. Listeners gather information about the organism from sounds it produces, so it’s useful to know how those sounds are actually related to the body that produced them.
Background image of page 2
The human vocal organs Phonation requires: a source of power (to set molecules vibrating); a vibrating structure to convert aerodynamic power to acoustic energy; a filter to shape resulting output. In humans, these are the lungs, the vocal folds, and the supraglottic vocal tract.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
The human vocal tract Phonation is not the original function of these structures. The lungs are used for respiration (aka exchange of gasses—out with carbon dioxide waste, in with new oxygen), smell, and thermoregulation. The larynx protects the airway, and provides a rigid frame for heavy lifting. Supraglottic structures are used for eating, smelling, and so on.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Breathing The lungs provide most of the raw power for speech and voice. Speech breathing requires some changes to regular respiration. Prolonging exhalation so that more than one word can be produced on a single breath. We’ll start by describing normal breathing, then talk about how we change our behavior to speak.
Background image of page 6
Respiratory anatomy Breathing uses the lungs, chest wall, and abdomen. The lungs are a complex branching network of air passages that end in millions of spongy, elastic air cells. No muscles of their own Supported by diaphragm Contained by 12 pairs of ribs
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
The chest wall Between lungs and ribs are tissues called pleura . One pleura ( visceral pleura ) runs between the lung and the ribs. A second ( parietal pleura ) lines the chest wall. The pleura doubly seal the lungs. A small amount of fluid lies between the pleura, so they can slide against each other, but not pull apart. The pleura link lung tissue to the ribs, so that when the rib cage elevates/compresses, lung tissue goes with it.
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Changing the shape of the chest cavity Three primary muscles of respiration The diaphragm The internal intercostals the external intercostals. Function: By changing the shape of the chest cavity, these muscles create positive/negative air pressure in lungs.
Background image of page 10
A dome-shaped muscle Contracts downwards When it contracts, the dome flattens out, increases size of thoracic cavity When it relaxes, it returns to rest position and reduces the size of the thoracic cavity. The most important inspiratory muscle
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/01/2008 for the course COMM 119 taught by Professor Kreiman during the Winter '07 term at UCLA.

Page1 / 49

lecture3 - Part I Breathing for voice and speech production...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online