sox

I've been working on this issue for the past 3 months and am completely stuck. I am trying to package up my NodeJS AWS Lambda function that will use SoX and it's dependencies to convert audio files to MP3. I can get my code to recognize the custom location of the SoX binary by following instructions referenced here , and here . I ended up adding this code to the start of my Lambda function call to update the process.env PATH variable to include the path to the custom binary. process.env['PATH'] = process.env['PATH'] + ':' + path.join(process.env['LAMBDA_TASK_ROOT'], 'binaries'); This results

I'm using the sox tool and I would like to merge two audio files , let's say long.ogg and short.ogg to output a file output.ogg . This is very easy using $ sox -m long.ogg short.ogg output.ogg . Thing is, I would like the short.ogg to be played after n seconds (while long.ogg should start right from the beginning). To do so, I've found the pad effect. But I don't understand the syntax to delay only the short.ogg input file, not the long.ogg one. I found a (dirty) way of doing so (with n=6): $ sox short.ogg delayed.ogg pad 6 $ sox -m long.ogg delayed.ogg output.ogg I would like not to have to

I need to get the length of a .wav file. Using: sox output.wav -n stat Gives: Samples read: 449718 Length (seconds): 28.107375 Scaled by: 2147483647.0 Maximum amplitude: 0.999969 Minimum amplitude: -0.999969 Midline amplitude: 0.000000 Mean norm: 0.145530 Mean amplitude: 0.000291 RMS amplitude: 0.249847 Maximum delta: 1.316925 Minimum delta: 0.000000 Mean delta: 0.033336 RMS delta: 0.064767 Rough frequency: 660 Volume adjustment: 1.000 How do I use grep or some other method to only output the value of the length in the second column, i.e. 28.107375? Thanks phihag The stat effect sends its

I'm trying to use sox to convert asterisk voicemails to raw audio. The encoding information of the original wav is PCM S16 LE, so I thought I would just be able to do sox msg0000.wav msg0001.raw but the raw file from that is garbled and, according to VLC, 4 minutes long, compared to a 6 second source file. I'm not sure where I'm going wrong, anybody how to convert a wav to raw? Preferably using sox, but any commandline solution will do fine. Are you sure that your problem is with sox and not VLC? I've also had problems getting VLC to play raw audio. There are command-line options but I didn't

I use this command to merge two audio files into one using sox: sox end.mp3 -p pad 6 0 | sox - -m start.mp3 output.mp3 I was wondering how can I merge 3 or 4 audio files using only one command instead of using the "output.mp3" as the input to the next command and so on? I will really appreciate any help You can do it with one invocation of sox like this: sox -m in1.mp3 in2.mp3 in3.mp3 out.mp3 If you want to combine this with the pad effect you need to be clearer about what you want. To combine mix and effects (pad, trim etc) use the following: sox -m "|sox end.mp3 -p pad 6 0" start.mp3 output