A crude approximation at voice production is to consider the breathing passages and mouth to be a resonating tube closed at one end. (See Figure 17.30.) (a) What is the fundamental frequency if the tube is 0.240-m long, by taking air temperature to be 37.0°C? (b) What would this frequency become it the person replaced the air with helium? Assume the same temperature dependence for helium as for air. Figure 17.30 The throat and mouth form an air column closed at one end that resonates in response to vibrations in the voice box. The spectrum of overtones and their intensities vary with mouth shaping and tongue position to form different sounds. The voice box can be replaced with a mechanical vibrator, and understandable speech is still possible. Variations in basic shapes make different voices recognizable.
A crude approximation at voice production is to consider the breathing passages and mouth to be a resonating tube closed at one end. (See Figure 17.30.) (a) What is the fundamental frequency if the tube is 0.240-m long, by taking air temperature to be 37.0°C? (b) What would this frequency become it the person replaced the air with helium? Assume the same temperature dependence for helium as for air. Figure 17.30 The throat and mouth form an air column closed at one end that resonates in response to vibrations in the voice box. The spectrum of overtones and their intensities vary with mouth shaping and tongue position to form different sounds. The voice box can be replaced with a mechanical vibrator, and understandable speech is still possible. Variations in basic shapes make different voices recognizable.
A crude approximation at voice production is to consider the breathing passages and mouth to be a resonating tube closed at one end. (See Figure 17.30.) (a) What is the fundamental frequency if the tube is 0.240-m long, by taking air temperature to be 37.0°C? (b) What would this frequency become it the person replaced the air with helium? Assume the same temperature dependence for helium as for air.
Figure 17.30 The throat and mouth form an air column closed at one end that resonates in response to vibrations in the voice box. The spectrum of overtones and their intensities vary with mouth shaping and tongue position to form different sounds. The voice box can be replaced with a mechanical vibrator, and understandable speech is still possible. Variations in basic shapes make different voices recognizable.
A crude approximation of voice production is to consider the breathing passages and mouth to be a resonating tube closed at one end. (a) What is the fundamental frequency if the tube is 0.240-m long, by taking air temperature to be 37.0ºC ?(b) What would this frequency become if the person replaced the air with helium? Assume the same temperature dependence for helium as for air.
Chapter 16, Problem 069
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The bellow of a territorial bull hippopotamus is measured at 116 dB above the threshold of hearing. What is the sound intensity?
Hint: The threshold of human hearing is Io = 1.00 x 10-12 W/m2.
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A crude approximation of voice production is to consider the breathing passages and mouth to be a resonating tube closed a
one end. What is the fundamental frequency fi if the tube is 0.200 m long, by taking air temperature to be 37.0 °C?
What would this frequency become if the person's breathing passage were filled with hydrogen instead of air? Assume the
same temperature dependence for hydrogen as for air.
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Question Credit: OpenStax College Physics
Essential University Physics: Volume 2 (3rd Edition)
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