science

Nasometry

Nasometry is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Nasometry rather than just read about it. In short: Nasometry refers to measurement of the modulation of the area of the velopharyngeal opening, using movements of the velum and pharyngeal walls, in speech and singing. The velopharyngeal opening connects the oral air passageway with the nasal air passageway.

Key takeaways

Nasometry belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Nasometry to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Nasometry from memory before moving on to harder problems.

Reference excerpt

Nasometry refers to measurement of the modulation of the area of the velopharyngeal opening, using movements of the velum and pharyngeal walls, in speech and singing. The velopharyngeal opening connects the oral air passageway with the nasal air passageway. The size of this velopharyngeal opening generally controls the nasality of the resulting speech or singing. The term nasometry is generally used to refer to non-invasive techniques for measuring the size of the opening, as opposed to endoscopic or other visual methods. During vowel sounds, nasometry usually refers to the use of a system for measuring nasalance. During consonants, nasometry usually refers to the measurement of air escaping past the velum and escaping through the nose. This escaping air is referred to as nasal emission. Thus, a complete system for nasometry consists of a combined nasalance measurement system and nasal emission measurement system. However, when one or another of these variables is not important, the term nasometry can be used to refer to either measurement of nasalance or nasal emission.

See also Nasalization Nasalance Glottal Enterprises NVS System Kay-Pentax Nasometer II Archived 2009-07-25 at the Wayback Machine icSpeech Portable Nasometry Unit

References

Worked examples

Example 1 — a first encounter with Nasometry

Start with the simplest possible case. Write down what Nasometry claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Nasometry before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Nasometry ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Nasometry

In research: Nasometry appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Nasometry in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Nasometry is common in secondary-school and first-year university syllabi. It links to neighbouring topics Human voice, Phonetics, so understanding it makes those chapters shorter.
In everyday life: Look for Nasometry outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Nasometry in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Nasometry means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Nasometry out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Nasometry in simple terms?

Why does Nasometry matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Nasometry?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Nasometry.