Questions tagged [sound]

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3
votes
2answers
90 views

Why does the frequency of a bottle filling up changes?

Today as I was filling up a bottle of water, and I could hear the distinctive change in pitch that signals that the bottle is near filling up, I started wondering what equation determines the ...
2
votes
2answers
46 views

How to convert the velocity field to a pressure field for obtaining the sound level?

I am studying jet mixing noise and I am given a velocity field, with $V_x$, $V_y$, $V_z$ in the Cartesian coordinates. I wanted to know if there is a method by which I could find some information ...
0
votes
0answers
100 views

How to use Spectroid app to measure low frequency vibrations?

Need to measure how low frequency (vibration) changes when going through different materials. The only possible way found is by using Spectroid app. However, have no idea of what settings to set up. ...
0
votes
0answers
10 views

Relationship between particle size and wave parameters in acoustic levitation

Can you tell me in acoustic (ultrasonic) levitation if a relationship between the acoustic sound wave parameters (frequency or amplitude or other) and the particle size that can be levitated is known? ...