128 views

### Why do certain types of sound seem to fade faster? [duplicate]

I noticed that if I'm playing music in a room and I go into another room or walk further and further, then at some point I can only hear the percussion and the melody to a lesser extent. All the ...
3k views

### Why do you only hear the bass when someone nearby is wearing earphones?

When someone nearby is listening to music through earphones or headphones, usually you can only hear the bass (unless it's really loud where you can hear the singer's voice and the other instruments ...
40k views

### How far can one hear sound?

I was thinking how far can I hear sound coming from a concert. Today I was walking at night and I could hear sound from somewhere very far. I started following the sound but sound used to disappear ...
2k views

### Physically, why are high sound frequencies more easily absorbed than low sound frequencies?

If someone is playing music in a room, outside the room you generally hear a more pronounced reduction in high frequencies, compared to low. I know that sound is most easily absorbed by a material ...
2k views

### How can one calculate the distance a particular sound will travel?

What do you need and how to calculate a distance traveled by sound? For example if you hit a bell with a specific amount of power how far will it travel?
398 views

### Does a square wave “smooth out” in the air?

I understand that playing a square wave from speakers cannot produce a PERFECTLY sharp division between compression and rarefaction. But it's sharp enough to sound distinctly different from a sine ...
653 views

### Why does a wall act as a low-pass filter?

Learning about the fourier transform and its connection to filtering/convolution got me curious about naturally occurring filters. Why/how is it that brick walls naturally act as a low-pass filter (...
108 views

### Why is it hard to feel sound pressure from higher frequencies?

Reading the Wikipedia page on pressure magnitudes, https://en.wikipedia.org/wiki/Orders_of_magnitude_(pressure) I was surprised to see that the threshold for pain (140db) is listed as ±200 Pa of ...
164 views

### What sound frequency can be heard the greatest distance by humans?

What sound frequency can be heard the greatest distance by humans? Assuming a pure tone, single frequency, same source SPL (dB) for each frequency, outdoors with no obstacles between source and ...
31 views

### How low frequency sounds transmitted through wall?

I know in theory that it's wavelength is large enough compare to barrier width. But unable to understand through visualization how low frequency waves passes through it. Why only low frequency wave ...