9
votes
Accepted
Can a single tympanal ear detect the direction or distance from which a sound comes?
The eardrum is a single sensor: The sound pressure which vibrates the eardrum propagates as a single signal in the hammer bone which is attached to the inner surface of the eardrum, i.e. there is no ...
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5
votes
Can a single tympanal ear detect the direction or distance from which a sound comes?
Yes, to some extent. The shape of human ears filters sound differently depending on direction, see https://en.wikipedia.org/wiki/Head-related_transfer_function
5
votes
Can a single tympanal ear detect the direction or distance from which a sound comes?
The Cochlea that translates sound/vibrations into chemo-electrical (nerve) signals is only a single sensor and therefore directionality cannot be obtained by time-delay estimations.
However, the ear ...
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5
votes
Online Library for sounds of unknown origin?
If you think your sounds are avian, then Xeno-canto also includes a 'Mystery recording' section, and I have had success in crowd-sourcing species IDs for recordings in the past.
Link: https://xeno-...
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5
votes
Powered speaker recommendations for listening to cetacean vocalizations
I prefer headphones to speakers for identifying animals sounds since I can often hear things in headphones that are not audible when played through speakers. See What's more accurate: Speakers or ...
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4
votes
If we turn on a TV, is the sound pressure level of the room increased definitely?
Human hearing sensitivity is approximately logarithmic, leading to the use of decibel scale to measure sound level.
Decibels don't add up directly. For unrelated sounds, the formula is (see e.g. this ...
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4
votes
If we turn on a TV, is the sound pressure level of the room increased definitely?
In general, any added sound increases the total sound pressure level (SPL), even if this sound alone has a smaller SPL than that of the background sound of the room. This is right when the added sound ...
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4
votes
Online Library for sounds of unknown origin?
For birds, a potential option is to try using BirdNET, from the Cornell Lab of Ornithology (ML model). Their goal is to be the "Shazam" for birds.
You would just have to ask them what the ...
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4
votes
Powered speaker recommendations for listening to cetacean vocalizations
Most bookshelf speakers, even budget ones will reproduce the range of 150 Hz to the limits of normal hearing 20 kHz, you would usually expect them to be able to handle much lower frequencies 45 Hz ...
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3
votes
Powered speaker recommendations for listening to cetacean vocalizations
As human hearing is limited to < 20 kHz, you won't be able to hear "animals whose vocal range is 100s of kHz (e.g., odontocetes)" on a speaker whatever its quality.
However, you can ...
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3
votes
Retrieving audio information of multiple wav files in r
you can do that with the package warbleR. The code below saves a couple of sound files (for the sake of the example) and gives you the info you want in a data frame:
library(warbleR)
data(list = c(&...
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1
vote
Can a single tympanal ear detect the direction or distance from which a sound comes?
Sound Cues and Horizontal Plane Localization
There are different sound cues we naturally learn to be able to localize sound sources.
These cues may be related to the sound energy (amplitude) and to ...
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1
vote
Can a single tympanal ear detect the direction or distance from which a sound comes?
The shape of the ear helps with broadband sounds.
If you have a cat you can see a similar effect by testing its ability to find the height of a sound source.
It can accurately find the source when ...
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1
vote
Anthropogenic sound impacts aquatic animals
It seems that studies on fish kept in captivity could be a good way to explore such effects in a controlled environment. A quick Google Scholar search led me to the following article entitled '...
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