Batch wav file trimmer

2008-12-02 07:06:01

I have a folder of over 1000 wav files of sound recorded from scientific equipment. Each file is 1-3 seconds. The recording automatically started at the start of the event, however every file has at least 0.5 seconds of silence at the end. (however its not a fixed duration in all the files)

I am looking for a program that that can trim this silence from the end of the files automatically.

WavTrim looked promising, however when I load the files in I would get the message: "File too small to be processed (0.94s)!" so that wont work.

Does anyone know of anything similar?

Thanks

Batch wav file trimmer

Reply #1 – 2008-12-02 10:03:48

If Mac OS X is an option for you, I'd recommend SampleManager.

Batch wav file trimmer

Reply #2 – 2008-12-02 10:08:22

I have got access to a Mac yes, but it appears can't do batch jobs. I got around 1500 files. Thats my problem, i have found software, but nothing that can do it batch.

Batch wav file trimmer

Reply #3 – 2008-12-02 17:24:40

I do not have the experience myself, but you might take a look at sox. It has a "silence" effect that is designed to remove silence from the beginning, middle, or end of the audio. sox is a command line tool and thus suited for batch processing.

Batch wav file trimmer

Reply #4 – 2008-12-02 20:33:59

I own SampleManager and it does process multiple files, although I admit to have never done a batch of 1500. Out of curiosity I decided to do a test with 256 files, 2 s in length and shorten them to 1. It took about 6 seconds to process them all.
The "trim beginning below" and "trim end below" options in SM allow to set a threshold (e.g. -90dBFS) to define the trim points. That could be a useful feature for your application. There's a SM demo available if you'd like to try it first.
What do you expect from the "batch" feature ?