Using u-law compression for audio files on Windows 7

Question

I need to convert some hi res audio files to u-law compression. I find no documentation on this- I'm almost certain the codec is there on Windows machines, but how the heck do I access it?

Answer 1

Yes the codec is there, however it is outside of WASAPI. APIs that deal with codecs are:

• Audio Compression Manager
• DirectShow
• Media Foundation

Not sure about the latter, however the first two have the μ-law encoder readily available (the codec itself has ACM interface, and DirectShow offers a wrapper over it).