wavepad | experimental synthesizer built using the Web Audio API | Audio Utils library
kandi X-RAY | wavepad Summary
kandi X-RAY | wavepad Summary
An experimental synthesizer built using the [Web Audio API] written in ES6 and compiled using [Babel] Works offline using Service Worker.
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QUESTION
I've more than 200 MP3 files and I need to split each one of them by using silence detection. I tried Audacity and WavePad but they do not have batch processes and it's very slow to make them one by one.
The scenario is as follows:
- split track whereas silence 2 seconds or more
- then add 0.5 s at the start and the end of these tracks and save them as .mp3
- BitRate 192 stereo
- normalize volume to be sure that all files are the same volume and quality
I tried FFmpeg but no success.
...ANSWER
Answered 2019-Apr-17 at 13:43QUESTION
I am looking for a way to automate tasks in external programs with python.
I have large audio files in AAC format. I need to convert them to mp3, and then amplify them (avoiding the distortion).
I wrote a program with the pydub librarie that works great with small files, but my files ar too large (longer than 2hs or 200mb) and i run out of memory (because that lib store the full files in RAM, i think). I can't split the file in chunks because i could not merge them again for the previous reason, and i need the file in one piece.
So, i would like to write a program that open another program to convert the file to mp3 (mediahuman audio converter) and then, amplify the converted file with another program (WavePad audio editor) but i don't know if is this possible.
In the present, i'm doing that manually, but that takes a long time of waiting and requires less than 10 clicks (spread throughout the process), wich is tedious.
I leave the program i wrote. I transcribed it to remove some functions that are not relevant and are not related to this process, plus I translated the comments, variables and other things into English, so it may have some errors but the original program works well:
...ANSWER
Answered 2019-Feb-21 at 08:21As agreed in comments, as a solution I am going to propose using a command line tool: FFmpeg. Here's the command you need:
ffmpeg -i input-file.aac -b:v 128k -filter:a loudnorm output.mp3
using loudnorm. You can also apply gain directly as explained in the docs, but one should expect inferior results. Normalization can be done in number of ways, I suggest reading this post.
By combining it with e.g. find . -name '*.wav' -type f
you can easily find and convert all files in a directory tree.
If you're bent on using Python, you can check Python bindings. Basics:
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