Can anyone explain how to use Windows Audio Compression Manager (VC ++)? Thank you and before that I need to study before I start ..
stu Apart from that, whatever compression you want to work with, you need to know about the format of the WAVEFORMATEX structure. If you have WAV files, they can already have a WAVEFORMATEX structure which you can Can use directly, but if you want to decode ACM If you want to use MP3 files, you'll need to build your WAVEFORMATEX, which is often non-trivial (Google Friends).
Second, the use of ACM is easier with continuous bit rate compression because you know how much it will run, how much it will get, and you can change the entire blocks. With VBR you may need to deal with "survivors" in the source buffer.
Thirdly, you have to realize that often conversions can not be done in one step. All compressed formats will provide a decompression for PCM, but then you may need to make a secondary conversion to get a sample rate or bit rate.
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