易科势腾（股票代码832204)新三板上市最新公告列表
12 questions
3
votes
1
answer
49
views
Do 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 ...
- 31
3
votes
1
answer
95
views
How to get the distance to a sound source using a 2 channel hydrophone array (bearing)?
I am going to use a 2 channel hydrophone array during some boat surveys. I will be collecting GPS data as well and I heard that with the bearing and the change in location pamguard can estimate the ...
- 61
3
votes
1
answer
64
views
How to synchronize two independent soundtraps working as part of the same hydrophone array?
I am going to carry out a series of surveys in Peru for which I plan to tow two soundtraps inserted in the same towfish. They will be separated by approximately 50 cm so I want to use them to extract ...
- 61
3
votes
1
answer
118
views
The preamplifier in PAMGuard
I'm using a towed array (with two hydrophones and 200m cable) to detect Cetaceans.
We bought from MARINE-ECOSOL. The hydrophone type is Magrec HP03, the DAQ is SAIL DAQ system.
Normally the sounds ...
- 33
11
votes
2
answers
88
views
Filtering audio for multichannel time-difference-of-arrival localisation
I have a multichannel array that I need to bandpass before feeding into my time-difference-of-arrival localisation (TDOA) routine.
I remember hearing somewhere that I should be vary careful about ...
- 4,050
10
votes
2
answers
50
views
Bumped into acoustic array during fieldwork - localisation issue?
While walking backwards in the dark, I bumped into my 4-channel inverted T-shaped acoustic array placed on a tripod. The array has a central mic with 3 peripheral mics at 60 cm Radius at 120 deg ...
- 4,050
6
votes
1
answer
21
views
Automatic mic self-positioning routines?
I work with 4-22 mics on a regular basis in the field. A fixed array frame can't always be setup in the field site (a cave, and sometimes narrow spaces).
I would like to have 'free-form' arrays whose ...
- 4,050
5
votes
3
answers
50
views
Call reflections while recording bat calls with mic array
I have a 4 mic array on a tripod that I use to record Pipistrelles flying about 3-5 m above the ground over a lake.
My calls are always 'double' for some reason (two calls, the direct path and some ...
- 4,050
11
votes
2
answers
119
views
How to interpret the localisation output in PAMGuard using squared array configuration in the 'Bearing Calculator' module?
I am struggling to interpret the output of the ‘Bearing Calculator’ module in PAMGuard using a squared array configuration. I think I understand the primary angle as being right or left (please, ...
7
votes
1
answer
157
views
Bearings on PAMGuard
I've been using PAMGuard's click detector + TMA module on a towed array dataset (four-channel soundtrap) to get localisations of finless porpoises. I get very strange results when I use the new ...
- 359
10
votes
4
answers
106
views
what are the minimum number of micro/hydro-phones needed to perform 3d tracking?
I've heard from colleagues that you need at least 4 mics to get 3d coordinates from time-difference-of-arrival (TDOA) tracking.
Then again, I also remember reading papers which use 3 microphones to ...
- 4,050
6
votes
2
answers
122
views
Packages to acoustically localise animals with microphone arrays
I'm looking to localise vocalising (terrestrial) animals (in my case bat calls) based on time-difference-of-arrivals with an open-source package (preferably written in an open-source language too).
...
- 4,050