Writing a loop to analyze hundreds of wav files in one folder

[lenawarbler]

Hi BirdNET fans. I recently switched from BirdNET to BirdNET-Lite and noticed the input file requirements are slightly different.

With the original version, I could specify an input folder ('/mnt/c/folder') and BirdNET would set to work analyzing the hundreds of wav files within. However BirdNET-Lite seems to require a specific file name to work ('/mnt/c/folder/audiofile.wav').

What is appropriate syntax for analyzing 1000 wav files inside one folder? (I am using Ubuntu for Windows).

Here is pseudo-code for what I am trying to do:

for filename in /mnt/c/folder/*.wav; do
python3 analyze.py --i /mnt/c/folder/"$filename" --o /mnt/c/folder/"$filename".csv
done

Perhaps there is an easier way I am not seeing... I am new to Linux! I appreciate your help!

Update: It was easier than I thought! This code will analyze all wavs in a folder and save a csv with the same name

for filename in /mnt/c/folder/*.wav; do
python3 analyze.py --i $filename --o "$filename.csv"
done

[DD4WH]

@lenawarbler
You might also want to check for this version which was modified specifically for batch processing:
https://github.com/FloMee/BirdNET-Lite

[JacobGlennAyers]

Hi there! Similar to the comment above, we encountered the same problem, so we implemented the ability to recursively go through folders given a path on our fork here: https://github.com/UCSD-E4E/BirdNET-Lite

[johannesnelson]

@JacobGlennAyers
Hi Jacob. Thanks for creating this. I successfully get this to run through audio files on folders on my mac, but when I run it on my PC with Windows 11, I get the following error: "Error in processing file: C:\Users\johan\BirdNET-Lite-batch-2\example\file2.wav"

It is probably an easy fix, but I have very limited experience with any of this. Any help getting this to run on my PC would be much appreciated!

[JacobGlennAyers]

Hi there, in Windows, the directories (folders) have paths like this with \ characters, while linux, and MacOS use / characters. So, if you are working with windows, change "example/important/path" to "example\\important\\path"

…

On Thu, Feb 10, 2022, 1:29 PM m1sterjay ***@***.***> wrote: @JacobGlennAyers <https://github.com/JacobGlennAyers> Hi Jacob. Thanks for creating this. I successfully get this to run through audio files on folders on my mac, but when I run it on my PC running Windows 11, I get a file read error: "Error in processing file: C:\Users\johan\BirdNET-Lite-batch-2\example\file2.wav" It is probably an easy fix, but I have very limited experience with any of this. Any help getting this to run on my PC would be much appreciated! — Reply to this email directly, view it on GitHub <#12 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AE6J6GBOM57HKKSARJVQ6ETU2QU25ANCNFSM5F6L7WJA> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[johannesnelson]

@JacobGlennAyers Thanks for getting back to me.

Edit: I resolved this by editing the analyze.py script so that all of the '/' characters in the relevant section were replaced with double backslash and it works now. Thanks again, this will save me a lot of time!

[JacobGlennAyers]

@m1sterjay Thanks for finding a bug, we made a quick fix to the repo using the builtin python os library (automagically handles '\' and '/') in order to make it more platform independent.