All Questions
Tagged with wavelength acoustics
86
questions
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How does flute work?
I started learning flute a few months ago. Here in India you can buy two types of flute hindustani and carnatic. Hindustani flute has a simple acoustics.
Lenth is inversely proportional to frequency.
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5
votes
2
answers
943
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Ultrasonic whistling
My friend from physics who doesn't know whistling says he is good at whistling, but the resonant frequencies are ultrasonic so others cannot hear it.
Could this be right, or is he just bluffing?
...
- 12.5k
1
vote
4
answers
209
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$0$th overtone in closed organ pipes
I know about $1$st, $2$nd or other overtones in the formula of frequency in a one-sided open system (specifically in closed organ pipes) that is
$$ f = \frac{\left( 2 n + 1 \right) v}{4 L} \tag{1} \...
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-1
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1
answer
154
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The physics behind the circle / spiral of fifths
In music theory, there is this thing called the circle of fifths.
If you take a string, and you divide it in two equal parts, you get a so called octave. It is, to our ear, kind of "the same tone&...
1
vote
1
answer
98
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Harmonics in closed and open pipes
What exactly would happen if we sent a frequency that was not one of
the harmonics into a closed and open pipe? What would happen if we
gradually increased this frequency?
From my understanding, I ...
3
votes
2
answers
274
views
Why do water sounds different at different levels?
I observed that when we fill a water bottle it sounds different at different levels of height.
means it sounds different while filling at $\frac{1}4$ level and different at $\frac{1}2$.
I just want to ...
- 77
2
votes
0
answers
102
views
What happens with natural frequency on a rope which length is changing?
I was watching violin concerto, and I thought of two scenarios of sliding on the string and taking finger off the string as shown in the image:
Define $v = \sqrt{\frac{T}{\mu}} = f\lambda$, $T, \mu, ...
- 137
2
votes
1
answer
139
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Mathematical relation between wavelength of wave and area of surface for reflection
I was reading about the reflection of sound waves, and the condition provided is that the reflecting surface's area should be greater than the wave's wavelength. But there isn't a single mention of ...
- 21
5
votes
2
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466
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How to create a standing wave that doesn't oscillate with the fundamental frequency?
Is there a way to make the string on my violin vibrate in an overtone frequency instead of the fundamental frequency?
- 51
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votes
2
answers
57
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Confusion regarding wavelength of stationary waves
Imagine, we have an air column and the the temperature of the air was the same outside and inside the column. If sound waves from a tuning fork then enters the air column, the speed of the standing ...
- 105
7
votes
4
answers
1k
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Confused regarding the wavelength of standing waves and their relation with wave speed
Suppose we have an air column closed at one end and open at one end. We know, the general formula for the wavelength of the stationary waves of different harmonics will be equal to $4L/n$. My ...
- 105
3
votes
2
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437
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Does the wavelength of a sound change from one medium to another?
In my book, it is written that:
v = fλ in a given medium under conditions of fixed temperature and
humidity.
It is also written that:
one of the more important properties of sound is that its speed ...
- 1,064
-1
votes
2
answers
138
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What are the effects of sunscreen blocking low frequency electromagnetic wavelengths of sound? [closed]
Sunscreens block uva and uvb rays but can they block sound waves?
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-1
votes
1
answer
88
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How to calculate the wavelength of the sound in the tube in terms of $L_1$? [closed]
A speaker emitting a sound of frequency 450 Hz is placed above a tube of 54.0 cm high that is filled with water as shown in Figure 1.1. The water is allowed to flow out of the tube slowly. A loud ...
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-2
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2
answers
104
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Is possible to "isolate" some audio frequency? [closed]
I want to know if is possible to "isolate" some audio frequency for certain human that only this human can hear this "frequency spectrum", some animals can hear certain frequencies ...
- 1