Questions tagged [noise]
The noise tag has no summary.
30 questions
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Removing noise in bulk from audiomoth files in R
I'm new to working with acoustic data and I can't seem to find a solution to a problem.
I have a lot of audio files (64k) which all have traffic and wind noise. The bird vocalizations are the prime ...
4
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3
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111
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Band noises from PAMGuard versus Wenz curve in R
Good morning,
In my work, I am attempting to visualize a 1/3 octave band level extracted from PAMguard binary data on top of a Wenz curve plot with R. Do you know where I can find the exact values of ...
3
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2
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Can someone explain 195-224 dB re μPa at 1 m to me?
I'm reading a journal article on wind and vessel noise in the sound fields experienced by southern killer whales, and I have struggled with a lot of technical jargon in the methods and materials ...
- 33
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Thoughts on the acoustic masking impacts of a high amplitude sound that does not overlap in frequency with a signal of interest?
I have a relatively specific thought on acoustic masking, and wanted to know what others think, or if folks know of studies that have addressed this problem.
When studying acoustic masking, we often ...
3
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Good definition for "noise"?
Does anybody have a good definition for "noise" that includes all aspects of it?
I vaguely remembered something like :
"noise is a signal that does not contain any relevant information ...
- 1,148
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Detection and removing of windy events in wild acoustic recordings
I have to clean my dataset of recordings concerning an African penguin colony inhabits the South African coast. In particular, since I have recordings with days of strong wind with clipped/noisy ...
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Recording parrots, would a Zoom H4N suffice?
I am working on my undergrad thesis with geographical variations on parrot vocalizations.I originally designed my study with Audiomoths because I had just gotten some. However, I now realized that ...
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Could I use the click train identification detector of pamguard when I only have one channel (one hydrophone)?
I have tried to detect click trains of dolphins in my audio file using the click train identification, but it doesn't detect any click trains.
(The recording contains clicks of the species Tursiops ...
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Should the sample rate be incorporated when calculating sound exposure levels?
A sound exposure level is defined as the integral of squared pressures, over a defined time-period and frequency range, and it is reported with units of dB re: 1 ��Pa$^2$s (for water-borne acoustics). ...
- 1,888
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How do I estimate the quantization error in recordings based on bit depth?
I've found myself looking this up about once every few years so thought this would be a good place to pose the question for others (to look up every few years). When considering the precision of ...
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Are there any suggested tools for detecting and potentially removing specific sounds from a recording?
I have some underwater recordings (wav files) that have periods of relatively high self noise (something bumping the hydrophone). These have the potential of biasing the ambient sound measures I want ...
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Recording of whitefly vibrations: "piezo" versus "low-noise microphone with subtrate-air diffusion"
Whiteflies communicate before and during mating through abdomen oscillations which vibrations are believed to propagate mostly in the leaf (~100-400 Hz). They are very low-energy signals which are ...
- 4,122
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How much does inner city noise mask bat echolocation?
When traveling in a very busy,very loud city recently, I noticed a few small bats clearly feeding on bugs attracted to a street lamp. I was on a party street, and there was loud music pouring out of ...
- 3,940
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Many time Hydrophone recording consist of Chain noise at regular interval. How to minimize this unintended sounds?
I was analyzing some marine data from the Red sea. I found some sound structures which didn't look like any biophony.
When I listen to this sound, it looked like some chain noise. since I didn't have ...
- 1,141
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Low cost hydrophones for quantitative sound pressure measurements?
Has anyone experience with using low-cost hydrophones, for example the Acquarian Audio H2a, and use a calibration measurements, for example by comparing to a Brüel Kjaer 8106, to get quantitative ...
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