Software packages to run microphone frequency-response calibrations?
I will need to measure microphone frequency responses in the coming weeks. In the past I have always used scripts I wrote or written by colleagues. They seemed to work, but required tweaking each time...
View ArticleIs this sound made by 'Flipper' dolphin tv series real?
Flipper was a tv show in the 60s about a dolphin and his humans. There is this sound that flipper supposedly makes out of water that is unlike any other dolphin sound I have heard (I have studied...
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PAMGuard whistle contours out of sync
In PAMGuard Viewer Mode, my whistle contours have become decoupled from the spectrogram on the frequency axis. I think I've accidentally changed a setting as I referred back to screenshots from this...
View ArticleAre "acoustic waves" the same as "mechanical waves"?
In my physics program, “acoustics” was referring to any mechanical waves that use local compression/rarefaction of medium particles to propagate, whatever the propagating medium (gas, liquid, solid).In...
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High Frequency broadband sound at night in a recording - can I rule out...
I have conducted passive acoustic monitoring at a nature reserve (a wetland, near a city and two medium-sized roads).At night only, I have a strange source of sound that goes on and off every now and...
View ArticleCan a single tympanal ear detect the direction or distance from which a sound...
Are we able to detect the direction or the distance from which a sound comes with just one ear?I don't know if the inner ear works as a single point sensor or if it has multiple sensitive regions, like...
View ArticleWhich software can batch calculate weighted SNR of recordings?
A way of assessing the quality of a sound recording in Audacity is to use 'ACX Check' found under Analyze to calculate an SNR value. 'ACX Check' is not intended for batch calculation of SNR for more...
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Help understanding some of the column names and units used in exported...
I'm using PAMGuard to detect killer whale stereotyped calls from hydrophone recordings from Puget Sound, and now I've figured out a general system for exporting the database of Whistle and Moan...
View ArticledB units of spreading compensated pressure
I would like to present propagation modelling results in dB with spreading effects removed. The spreading is largely cylindrical, so I am plotting $20 \log_{10}\Big(p(r, z) \sqrt{r}\Big)$ instead of...
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What are folks doing with extra microSD card adapters?
With the amount of ST600 deployments we do, I order a lot of microSD cards. Every time they come with an adapter, which I do not need more than 2 or 3 on hand. I have a dedicated microSD card case to...
View ArticleWhat kind of cheap ultrasound speaker would you recommend for basic playback...
I'd like to test the sound response of some rodents to ultrasounds (~40-100 kHz), but my recording/playback devices (microphone, speaker, soundcard) are for human-hearing range.Regarding speakers, the...
View ArticleResources/courses for large PAM dataset- porpoises
I am working on extracting porpoise clicks from a multi-year dataset from the northeast pacific using PAMGuard's click detector. I am new to the software and have come across issues in detection using...
View ArticleModeling PTS and TTS Distances for Pile Driving?
I was just wondering if anyone has any suggestions on how to find the auditory Permanent Threshold Shift (PTS) and Temporary Threshold Shift (TTS) ranges for Right whales.I know the source level for...
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How can I measure indisctict temporal(Pulse duration) properties of call?
I'm in my very first year of master's course and bioacoustic studies. My topic is the temporal/spectral structure of Rain call in Treefrog, which is poorly investigated for its function worldwide....
View ArticleHow do I use BirdNet without getting an error?
BirdNet is very new to me and I can't really find a guide online. I've installed it, and I've done the 'pip3 install pywebview gradio' to use the GUI version. Every time I've uploaded a recording and...
View ArticleDoes anyone know if there's a PAM data library for prawn/shrimp behavioural...
First stack exchange post ever, please excuse any breach of convention. Has anyone seen any PAM libraries containing noises from prawn (Penaeus Monodon specifically) or shrimps?
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How to convert relative db to db SPL knowing microphone specifications?
Similarly to this discussion (Is it common to have a negative-positive dB range in underwater spectrograms?), I used the 'seewave' R package to plot the below spectrograms.I limited the coloured...
View ArticleCan't reconcile amplitude from getRMS (soundgen) with output of meanspec...
I want to calculate the sound pressure level (in dB) of a wave and then display the mean power spectrum. The issue I face is that the SPL value I get from getRMS() is very different from the mean...
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PamGuard Click Train Detector is not colouring detected click trains
I have just started to do some tests in the PamGuard Click Train Detector.I ran some data from Riso’s dolphin that has a lot of click trains.For starting, I kept the default configuration for dolphins...
View ArticleBirdNET: workflow for correcting manually trained classifier?
I am using BirdNET GUI for analysis of bird vocalizations. I have created a classifier using the GUI and some training data, and I am wanting to improve it, e.g. correct false classifications and allow...
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