<p>I cannot talk about PAMGuard, maybe Doug will chime in.</p>
<p>Typically, I would consider a click belonging to a click train, if</p>
<ul>
<li>the Inter-Click-Interval (ICI) does not change very much,</li>
<li>the pulse power estimate is peaking up and is either similar to previous clicks or is part of a scan</li>
<li>in case you see the intra-head reflection (IPI), then this IPI should be constant (apert from measurement errors)</li>
<li>you can identify a surface reflection trailing the direct arriving click and this delay should also vary not much, but may have a significant trend</li>
</ul>
<p>This is rather easily done with Excel with a single sperm whale, but become a little bit more complex if you have multiple sperm whales</p>

CC BY-SA 4.0
2022-07-10T20:01:22.433Z
Thank you for your answer! I'm pretty okay doing it as a manual analysis, but I wanted to have something more automated. And in theory the PAMGuard function works for that, but I didn't understand how
Cristina Marcolin
CC BY-SA 4.0
2022-07-09T18:34:42.627Z
2023-04-19T11:57:23.323Z
2023-04-19T11:57:23.323Z
WMXZ
<p>I tried to find online resources on how the click train function of the click detector (the in-built click train detector), in PAMGuard, works. Unfortunately, I didn't find anything useful. I also tried myself with some recordings of sperm whales, but I wasn't able to understand how it works.
This tool was not part of my project but was something I wanted to play with, for my knowledge and future use.
Does anyone know of some material I can learn by?</p>

CC BY-SA 4.0
2022-07-12T15:53:39.377Z
Hi Jamie. I tried the in-built function with sperm whale's recordings of echolocation clicks. It was for "fun", because not part of my project. I wanted to learn how to use it for future studies. I am not sure what kind of screenshot I can publish - one with the bearing time display?
Cristina Marcolin
<analysis><pamguard><vocalization>
Click train classification - PAMGuard
# Click train classification - PAMGuard

(Asked by: username_0 on 2022-07-09)

I tried to find online resources on how the click train function of the click detector (the in-built click train detector), in PAMGuard, works. Unfortunately, I didn't find anything useful. I also tried myself with some recordings of sperm whales, but I wasn't able to understand how it works.
This tool was not part of my project but was something I wanted to play with, for my knowledge and future use.
Does anyone know of some material I can learn by?

**Tags:** analysis, pamguard, vocalization

> **Comments:**
> **username_0**: Hi Jamie. I tried the in-built function with sperm whale's recordings of echolocation clicks. It was for "fun", because not part of my project. I wanted to learn how to use it for future studies. I am not sure what kind of screenshot I can publish - one with the bearing time display?  

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## 1 answers

### Answer by username_1 on 2022-07-09. Score: 4

I cannot talk about PAMGuard, maybe Doug will chime in.

Typically, I would consider a click belonging to a click train, if

* the Inter-Click-Interval (ICI) does not change very much,
* the pulse power estimate is peaking up and is either similar to previous clicks or is part of a scan
* in case you see the intra-head reflection (IPI), then this IPI should be constant (apert from measurement errors)
* you can identify a surface reflection trailing the direct arriving click and this delay should also vary not much, but may have a significant trend

This is rather easily done with Excel with a single sperm whale, but become a little bit more complex if you have multiple sperm whales

> **Comments:**
> **username_0**: Thank you for your answer! I'm pretty okay doing it as a manual analysis, but I wanted to have something more automated. And in theory the PAMGuard function works for that, but I didn't understand how  

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