MP3 Audio editor functionality

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Hi All
i have a problem in editing a mp3 audio.basically i want to erase some part of the audio.it would be a great help for me..

Posted 27-Jun-12 1:11am

vaibhavbvp

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Richard MacCutchan · Answer 1 · 2012-06-27T02:24:00

Solution 1

You don't say what your problem is, but some of these links[^] may be useful.

Posted 27-Jun-12 2:24am

Richard MacCutchan

Albert Holguin · Answer 2 · 2012-06-27T04:31:00

Solution 2

You have to be more specific with your problem, erasing part of an audio file can be as easy as deleting some of the binary data stored within, or replacing the samples with zeros.

Not completely sure what you're trying to accomplish.

Posted 27-Jun-12 4:31am

Albert Holguin

Maximilien · Answer 3 · 2012-06-27T05:52:00

Remember that an MP3 file is compressed audio.

You need to decompress the file (in memory) to a wav file structure , work on the actual wav file structure and compress the result to MP3.

you will loose quality when doing this (that's why music is handled in wav format)

You will also need a mp3 codec to decompress and more importantly compress back again the audio.

It's the same general idea when working with jpeg images, you need to "decompress" the image from the jpeg, work with the bitmap and compress back again to jpeg.

good luck.

vaibhavbvp · Answer 4 · 2012-06-27T19:31:00

Solution 4

@Albert Holguin.
Ist let me thank you for your valuable suggestion.Now let me explain the problem:

actually my problem is I have a mp3 audio,now let suppose this audio is playing,and i want to delete some part of this audio file.

e.g. audio length is of 5minutes,now i want to change its length to 3 minutes,that's i want

Posted 27-Jun-12 19:31pm

vaibhavbvp

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Maximilien 28-Jun-12 7:26am

You cannot edit a playing mp3 file; you need to convert it to "wav"

open the mp3 file, decompress to WAV, edit the WAV data to your liking and re-save to MP3 after that (you will loose precision and audio quality)

as a suggestion, have a look at the Audacity source code (I'll leave googling as an exercise).