ADPCM codecs have been included since Win95, so any Windows transcoder that uses ACM should be able to do the job.

Hi,<BR><BR>I've got a 4-bit WAV that's resisting my attempts to decode. I've tried uLAW, aLAW, and VOX ADPCM without luck. I've also tried to open it with the proprietary X-Box ADPCM and Dreamcast CDI ...

San Jose, California (November 27, 2000): Integrated Silicon Systems (ISS) - The Multimedia ASVC Company[tm] today announced the immediate availability of a series of semiconductor IP core solutions ...

This paper presents the Adaptive Differential Pulse Code Modulation (ADPCM) method of digitally storing and reproducing speech or other waveforms. A detailed explanation of the encoding steps is given ...

The CS4000 family of ADPCM cores delivers up to 3,470 simplex or 173 full-duplex voice channels. Aimed at high-end telco architectures, the cores support the G.721, G.723, G.726, G.726a, G.727 and ...