How to adjust seewave spectro to account for hydrophone sensitivity?
I am using seewave's spectro() to generate a spectrogram from a hydrophone recording. My call is:spectro(wave, wl=2048, wn="hamming", ovlp=50, flim=c(40, 1000), dBref=3D1*10e-6, scalelab="dB re 1 uPa",...
View ArticleWhich people/groups/departments are working on soil bioacoustics?
I am a new PhD student at the University of Liverpool working on developing bioacoustic monitoring of belowground invertebrates in savanna habitats. It would be great to know if there are any other...
View ArticleHow do I format EVO 256GB and 512 GB using the SoundTrap ST600 software?
When I put a new SD card in the soundtrap, the software gives me IO error i have try to format it according to the user's manual but when I insert this new card, the software doesn't react. This...
View ArticleMy data is not being stored in the SQLite database
I just finished processing an acoustic dataset from SoundTraps, and when I opened the SQLite database that I created, it appears blank for my Whistle and Moan detector, LTSA and Noise Band Monitor....
View ArticleBirdNET Classifier Selection Tables
I have a custom classifier that I created with BirdNET to run on recordings of continuous data written into hour-long files. I'm realizing that in the current format, BirdNET will assign a separate...
View ArticledynaSpec R package is creating an MP4 file with only audio and no video
I am trying to visualize a short recording of an insect, using a WAV file, using the scrolling_spectro command in the R package dynaSpec. the MP4 file is being created, but with no video and only audio...
View ArticleAre you a grad student working in Bioacoustics?
Applications now being accepted for the Graduate Summer Course in Bioacoustics, hosted again at The University of Southern Denmark. Many of the founders and members of this stack exchange have been...
View ArticleHydrophone calibration in a tank vs open water?
I’m looking to calibrate some hydrophones (specifically SoundTrap 300HFs, but perhaps this applies more broadly). I’m aiming to compare the SoundTrap hydrophone with a reference one, roughly following...
View ArticleError using lts() from R package seewave
I am dealing with an unusual error in trying to create long-term spectral averages with the lts() function from R package seewave. I have a 1 h long time series made up of audio files of 5 minutes each...
View ArticleWould a single collision of human vocal folds cause an audible sound?
If it were possible to only exhale enough air to cause a single collision, would that be audible?
View ArticleDifference TFSD from seewave and scikit-maad
I noticed a difference in output when computing the TFSD using the seewave R package and the scikit-maad implementation in python.Is there any justification and is it possible to get the same result...
View Article"dB [re 1 µPa]" notation - why sometimes with a reference, and sometimes...
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 dB re 1...
View ArticleHow to convert stereo audio files to mono?
I have multiple stereo .wav recordings which I want to convert into mono files for further analysis. Is there a way in RavenPro/R/Audacity to batch convert them to mono sound files (channel 1 or...
View ArticleHow to set frequency limits when using acoustic_complexity_index() from...
I have previously used R and the functions ACI() from seewave and acoustic_complexity() from soundecology to calculate the Acoustic Complexity Index (ACI). However, I am transitioning to using Python...
View ArticleWhat affordable hydrophone options exist for in-the-field listening?
I am looking to purchase a hydrophone and speaker system that I can use to identify singing humpback whales while at sea, in order to deploy different tags to better understand song behavior on feeding...
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SoundTrap 4300 CH1 Faint Signal & Banding
We have collected 2 channeled recordings from two different ST4300 units, and more recently we have noticed that the signal in CH1 looks really weak. This has occurred in most but not all new...
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How to parametrize PAMGuard to avoid great bearing inaccuracies all along a...
I am running PAMGuard click detector on a two hydrophone array's recording to detect sperm whales clicks and calculate their bearing. The array is at a roughly 2300m depth, 40m above ocean's floor,...
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How does Raven paging deal with imperfectly continuous data?
I have sound files from a recorder that writes very near continously, but with very tiny 0.0192 s gaps between every 1-minute file. A single 60-sec file with a sample rate of 180 kHz should be 10800000...
View ArticleLooking for a suitable hydrophone where data can be monitored remotely (does...
Methodology problem: If soundtrapping whales with an array of hydrophones that are set out for ~1 year underwater, is data collection purely physical? As in do you have to wait until the end of the...
View ArticleHow to Translate Power Metrics in Raven Pro to Received Levels
I added in-band power and average power measurements to my selection table in Raven. I also have the end to end calculation of my instruments. To calculate the received levels, is it just a matter of...
View ArticleDifferences/similarities between BirdNET and Merlin
I am relatively new to the bird bioacoustics world (I'm a primatologist by trade but starting a side project with bird vocals from passive acoustic data I've got from Madagascar) and was a bit confused...
View ArticleRaven Pro 1.6. - Date and time template issues for page sound
I'm trying to read in .flac audio files to Raven Pro in the format "20200712T085500.flac" which is 08:55:00 on the 12th of July, 2020.On the "Date and Time" tab on Raven Pro 1.6 when I select file name...
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 ArticleHow to concatenate files from SoundTrap ST600?
We set the OceanInstuments SoundTrap ST600 (Firmware 4.0.0.7, Offloader 1.52, MSP 1.36) to record continuously, with 30 min. files every 30 min. When downloading the data, we selected the "Zero Fill...
View ArticleWhat's the "best" sound level meter available on the market?
I am thinking of purchasing a sound level meter to use for opportunistic measurements of shorebird vocalizations in the field this summer (Utqiagvik, Alaska). There are many options online, but I'm...
View ArticleDo any of the PAMGuard modules use towed array depth readings?
I am using PAMGuard to playback towed array data from DCLDE 2022 dataset. I used the array configuration dialog to import the DCLDE 2022 array file and see all 6 channels of data when I start PAMGuard...
View ArticleAre consumer grade USB audio interfaces 'safe' to use for bioacoustics...
I've been seeing many relatively affordable USB audio interfaces (even multichannel ones, in fact) with >= 96 kHz sampling rates. These seem like a cost-effective alternative to some of the more...
View ArticleHow does PAMGuard echo detector work?
I have sperm whales recordings and I would like to isolate clicks and their bottom and surface reflections.I first thought to run the echo detector associated with the click detector module but the...
View ArticleDataset of alarm calls with mutual excitation? (Hawkes process model)
I have learned about an interesting mathematical model for time series and I am curious to know if it can find an application in bioacoustics.The model is named "Hawkes process" and is a generalization...
View ArticleST600 recording issues - files created but no sounds
We just got two st600s back from the field and the data is really really quiet - it appeared to have recorded but it's almost as if the hydrophone wasn't connected and it's just fuzz. These were brand...
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