How to convert u-law and a-law encoded wav files to pcm wav file in c program?

Question

I want to convert a-law & u-law wav files to pcm wav file in c program. How do I do that ? Will sox c libraries be useful ? Please help.

Answer 1

Follow these steps:

1. Search for an audio library
2. Get Documentation for that library
3. Search for the terms u-law and a-law
4. If you can't find something meaningful go to step 1.
5. Use this library in your code according to the documentation

EDIT

If you follow these steps for the SOX library you'll find the line

ul indicates μ-law (8-bit), al indicates A-law

which is a strong hint that these formats are supported by sox