Questions tagged [audio]

For questions asking about the creation of or propagation of sound. Questions about how creatures or beings vocalize should use the [vocalizations] tag. Questions about music should use the [music] tag.

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7 votes
3 answers
257 views

Biologically what kind of feet would make the least amount of noise?

I'm designing creatures on my made up planet where animals evolved exceptional hearing and I'm wondering what kind of feet they might evolve to produce the least amount of sound when walking to avoid ...
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  • 285
1 vote
2 answers
96 views

Multi-Spectral Senses Overwhelming [closed]

In my story there is extensive modification of people's bodies, mainly through genetic engineering, and i have thinkered with all the possibilities of it, from increasing your physical and mental ...
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4 votes
3 answers
260 views

How much energy it would be required to propel a projectile with sound? Would it be lethal to its user?

Context: in a scenario where batteries suddenly became extremely energy dense due to some events between the main characters, I was thinking about which electromagnetic weapons I could use, such as ...
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  • 335
2 votes
4 answers
339 views

Use of Sound in a Radio and Electric Communication Enabled Species

Alright, so I was bouncing ideas off the wall about how the society of a species (maybe genetically modified humans?) with biological radio communication and electric field communication would look ...
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3 votes
3 answers
140 views

How long would a gramophone record made of vinyl remain comprehensible when played?

A gramophone record made of vinyl is stored under cool conditions in a sealed envelope. How long would it remain comprehensible when played after it was manufactured (assuming that the record was ...
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  • 4,140
6 votes
1 answer
818 views

Would dragons be able to purr?

My dragons have a... "difficult" personality. They're very catlike. Sure, they're more like KrimsonRogue's cat (somewhere around chaotic good). But, if I want to make my dragons smug, blue-...
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5 votes
2 answers
150 views

"AC" compressed air?

So, compressed air power is a Thing. Compressed air tools are reasonably common, and compressed air has even been delivered commercially as an industrial utility at times. But all existing compressed-...
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5 votes
3 answers
230 views

How to hide this underground city from seismologists, oil prospectors, and ground surveying projects?

In my previous question Would this underground city be noticed by seismologists?, it was established that a Goblin city in one of my settings would probably not go unnoticed do to the meddling of ...
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14 votes
4 answers
2k views

Would this underground city be noticed by seismologists?

The setting is current day Los Angeles... except for the goblin city that exists beneath it. Its chambers range from about 500-2000ft underground and has a population of several thousand. A lot of ...
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2 votes
1 answer
115 views

How could a ballistic mask provide full protection without compromising the wearer's singing voice?

So, I'm having trouble with one of my character designs. Guardian angels are former humans who died in such dumb ways that Heaven simply couldn't let them in, not before they proved they can prevent ...
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9 votes
2 answers
484 views

How do I determine the physical size of a quartz crystal of a given shape and vibrational mode needed to approximate a specific resonant frequency?

So, one of my D&D characters has a cut/relief-carved quartz crystal amulet (medallion shaped) that's both an arcane focus (crystal) and a holy symbol (amulet), and I thought it would be a good ...
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  • 11.1k
2 votes
2 answers
248 views

On Siren Head's sonic attacks

At this point, roughly 98% of D&D SRD monsters are on the good side in my setting, I mean, they're too cool. So, I decided to throw something less cool, scary, intimidating and evil that's ...
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8 votes
3 answers
255 views

How can our boss play his theme song in (almost) any environment?

So. our boss is kinda... nuts. His current pet project is to create a device that can play his theme song whenever his location is revealed to someone within a 50 meter radius. Naturally, he ...
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3 votes
3 answers
278 views

Could sound be recorded by door panels and later replayed?

In my novel, a character makes the claim that sound can be recorded by the panels in a door. The door panel vibrates with sound, according to him, and those vibrations are recorded analogically, very ...
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  • 47
11 votes
2 answers
1k views

How close to the Sun would you have to be to hear it?

Taken from this fascinating answer: The Sun is immensely loud. The surface generates thousands to tens of thousands of watts of sound power for every square meter. That's something like 10x to ...
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10 votes
1 answer
208 views

Dissipating sonic booms

Alastair Reynolds is a contemporary sci-fi writer whose works often demonstrate a strong grip on science as it presently stands. Recently, I picked up his book On The Steel Breeze for a quick re-read ...
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  • 2,723
3 votes
1 answer
294 views

How quiet can a static, non-propulsive pulsejet be?

The wizards of Magitechia have discovered that the deflagration or detonation of certain chemical compounds have beneficial supernatural effects, that are useful for powering magical apparatuses. ...
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  • 4,608
3 votes
1 answer
112 views

What frequency range would be ideal for audible communication on a planet with a thick atmosphere? [closed]

If you lived on a planet with a very thick atmosphere, and you communicated verbally, what frequency range would be best? What would you eventually evolve to? Would their voices need to be high ...
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5 votes
1 answer
252 views

Can a sound of 125dbs from a watch be used to cause pain for self defense?

I was planning on creating a watch capable of producing around 125 dbs of sound for self defense: it would irritate/incapacitate an attacker and possibly give the victim an opportunity to leave the ...
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  • 59
14 votes
1 answer
388 views

Planet-wide vocalizations: is there a natural limit preventing it?

Premise I recently recalled when the Chelyabinsk meteor crashed overhead in 2013. The pressure wave was immense. The infrasounds, as recorded by nuclear missile detectors, appeared to traverse the ...
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10 votes
8 answers
632 views

Pre-electrical fast long-distance communication using Acoustic Mirrors

It takes a lot of work, but it can be done. The Mongol Yam, a horse-based mail system, is probably the best example that has been done before. But after visiting the local science museum recently, I ...
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  • 783
15 votes
1 answer
197 views

Music Dragonfly via Perforations in Wings

Info I'm designing a prehistoric-dragonfly that has little holes or perforations in its wings. When the wind flows through them, they make music (the viability of flying with these wings will be ...
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  • 3,246
4 votes
2 answers
182 views

How would building an acoustic amplifier into a large scale rockface work?

I'd like for this to be how a small species communicates with a giant species. I was assuming a series of tunnels would carry the sound like a pipe organ.
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  • 41
4 votes
6 answers
513 views

How can an optical signal be converted into a mechanical/acoustic signal without using electricity?

There are several ways to directly convert acoustic/mechanic signals into optic signals (e.g. opening/closing a shutter, or the acousto-optic effect). Is there any way to do the reverse, without using ...
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  • 954
1 vote
5 answers
218 views

How Could an Alien or Superhero Increase and Decrease Their Hearing at Will?

Would it be possible for an extraterrestrial humanoid or superhero to increase and decrease their hearing at will, and if so, how? I'm thinking specifically of an alien who can somehow adjust their ...
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  • 1,579
11 votes
7 answers
3k views

Underwater acoustic muffling/dampening and sonar evasion. Is a stealth torpedo possible?

So I have various factions with submarines and surface ships battling it out for control over various underwater resources. One of the rarer and more lethal weapons is a "stealth torpedo". It ...
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4 votes
1 answer
360 views

Sound From a Super Nova

Let's say there exists an alternate reality from ours that is identical in every aspect save for one. There exists a substance in space that allows for the transmission of sound. Let's call this ...
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