Questions tagged [measurement]
The measurement tag has no usage guidance.
11
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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 ...
- 707
8
votes
2
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Best practice for measuring amplitude of biophony
It is often useful to quantitatively measure (or at least estimate) the amplitude of an acoustic event such as a bird song. The desired measurement could be, for instance, that a bird sang at 105 dB ...
- 301
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$10\log_{10}(X)$ or $20\log_{10}(X)$ dB values - how to tell?
Inspired by this question on dBs, I wanted to ask about a potentially dumb confusion I always have.
When referring to an absolute measurement value, dBs always come with a reference. However, it is ...
- 4,010
11
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2
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What is the AudioMoth absolute sensitivity in V/Pa?
How can I know the absolute sensitivity in V/Pa of AudioMoths (when used alone and also when used in the manufacturer's case) and its relation to the gain setting? A value measured at 1kHz or a full ...
- 664
13
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4
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Echolocation Click Measurement
I am looking for some advice regarding software/code that is appropriate for obtaining precise measurements of echolocation click parameters (peak frequency, 3 and 10 dB bandwidth, etc.). While I know ...
- 1,097
11
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4
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Batch-update Raven selection tables with new measurements?
I have gone through hundreds of recordings in Raven Pro 1.6, taking a suite of measurements on each one. I now have a batch of txt files (Raven selection tables) with the measurements.
Let's say I ...
- 451
21
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4
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163
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"dB [re 1 µPa]" notation - why sometimes with a reference, and sometimes without?
I've come across several different formats for reporting acoustic measurements. One that has particularly confused me is when someone reports the source level of something as, for example, "120 ...
- 3,560
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How to measure sperm whale's IPI?
It's pretty easy to find the definition of a sperm whale's IPI (interpulse interval) and the methods that can be used to do it. Papers usually show some spectrograms with different pulses (Møhl et al.,...
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Manual measurements of calls from spectrograms. Should I be concerned with accuracy?
I've been struggling to measure the duration of my field-recorded bat calls well (with decent amounts of reverberation).
Manual measurements are common in my study field using spectrograms. Using a ...
- 4,010
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3
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Methods to analyse overlapping calls
Background
I'm currently handling a multi-microphone dataset with groups of free flying frequency-modulating (FM) bats (1-30 bats). I'd like to assess if bats change their call bandwidth across group ...
- 4,010
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Which method to report source/received level (p2p, rms, peak) of recorded sounds?
I've seen papers report source/received levels of animal vocalisation using three measures: rms, peak and peak-to-peak.
Even within a field there doesn't always seem to be a single convention, and ...
- 4,010