Analysis using warbleR -- getting error

Hi all!

I hope this question is appropriate for this forum, and that you can possibly help lead me in the right direction. I'm using the warbleR package in R and I'm getting an error in my coding in the first steps of the analysis. I'm trying to filter my recordings in the coding, and I'm getting a specific error:

> wavs

 [1] "Catharus-ustulatus-100584.wav" "Catharus-ustulatus-100585.wav" "Catharus-ustulatus-100586.wav"

 [4] "Catharus-ustulatus-100587.wav" "Catharus-ustulatus-101352.wav" "Catharus-ustulatus-101353.wav"

 [7] "Catharus-ustulatus-101354.wav" "Catharus-ustulatus-101356.wav" "Catharus-ustulatus-101436.wav"

[10] "Catharus-ustulatus-101879.wav" "Catharus-ustulatus-104708.wav" "Catharus-ustulatus-105737.wav"

[13] "Catharus-ustulatus-21791.wav"  "Catharus-ustulatus-21792.wav"  "Catharus-ustulatus-2853.wav"

[16] "Catharus-ustulatus-63227.wav"  "Catharus-ustulatus-65833.wav"  "Catharus-ustulatus-67148.wav"

[19] "Catharus-ustulatus-70477.wav"  "Catharus-ustulatus-70509.wav"  "Catharus-ustulatus-79664.wav"

[22] "June2830_sample.wav"

> # tiff image files are better quality and are faster to produce

> lspec(flist = wavs, ovlp = 10, it = "tiff")

  |                                                  | 0 % ~calculating  Error in readChar(con, 4) : invalid UTF-8 input in readChar()

In addition: Warning message:

In readChar(con, 4) : truncating string with embedded nuls

I tried to subset the data with only two or three .wav files, but I get the same error. Any guidance is greatly appreciated, thanks SO MUCH!

Sarah

2 Comments

sarahd

May 29, 2020

Hi EAP,

I'm attaching three of the .wav files in case one of them doesn't work for whatever reason! These are from xeno-canto though, they're not files from my Audiomoths that were deployed. In the above code, I'm trying to filter the .wav files based on an example here (https://rpubs.com/marcelo-araya-salas/110155).

Thanks so much!

EwanP

Sarah,

On my system I am able use WarbleR and your code to process .wav files generated by an AudioMoth, so it it's unlikely that there is a systematic problem.

Can you post one of the files that are causing problems, and I will check it on my system? That way we will know if it's a problem with the files or with your R installation.

Kind regards.

EAP