Whistling into Speedy 33 Microphones: Effects on Lab View Graph Visualization

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Discussion Overview

The discussion revolves around the visualization of sound waves produced by whistling into Speedy 33 microphones when connected to a PC running LabVIEW. Participants explore the characteristics of the resulting graph, particularly why the waveform appears sinusoidal for a whistle compared to more complex patterns for speech.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant inquires about the graph's behavior when whistling into the microphone and questions why it appears sinusoidal.
  • Another participant seeks clarification on whether the whistle produces a single frequency, suggesting that this could explain the sinusoidal waveform.
  • A further response proposes that normal speech is more complex than a whistle, attributing this complexity to the varied sounds produced by the vocal tract and mouth movements during speech.
  • It is suggested that a whistle, in contrast, is simpler as it involves a fixed mouth position and a more straightforward airflow, resulting in a less complex sound wave.

Areas of Agreement / Disagreement

Participants express differing levels of understanding regarding the relationship between sound production and waveform visualization. There is no consensus on the specifics of the sound wave characteristics or the underlying reasons for the observed differences between speech and whistling.

Contextual Notes

Some assumptions about sound production and waveform representation are not explicitly stated, and the discussion does not resolve the complexities of sound frequency and waveform generation.

qwerty321
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hello..i just want to ask a simple question..

if I whistle in the speedy 33 microphones and if the speedy 33 is connected to a pc and we are visualising our voice on lab view(graph),what happen to the graph?
why does it turn sinusoidal when we whistle?
thank you!
 
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qwerty321 said:
hello..i just want to ask a simple question..

if I whistle in the speedy 33 microphones and if the speedy 33 is connected to a pc and we are visualising our voice on lab view(graph),what happen to the graph?
why does it turn sinusoidal when we whistle?
thank you!

Your question is a bit difficult to decipher, qwerty. Are you asking why you see certain wave shapes for different sounds that you make with your voice and whistle? What part is confusing you?
 
yeah i mean does the whislte have a same frequency(single tone) that is why we see a sinusoidal form?
 
qwerty321 said:
yeah i mean does the whislte have a same frequency(single tone) that is why we see a sinusoidal form?

I think what you're trying to ask is why is it that normal speech looks much more complicated than a whistle, is that correct.

On one level I suppose you could argue that it must be more complex, otherwise the amount of information that we could convey with speech would be far less rich. An approximate model for how speech is produced is that our "voice box" just creates a fairly broad spectrum "buzzing" sound that is tuned by the mouth and vocal tract to make complex sounds that vary as our mouth and tongue positions vary during speech.

A whistle on the other hand is far simpler. The mouth and lips are usually held in a fixed position and air exhaled (or inhaled) past the lips to resonate them.
 

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