AD2 file extension - ADPCM 2-bit compressed voice file
What is ad2 file? How to open ad2 files?
File type specification:
The AD2 file extension is related ADPCM. Adaptive Differential Pulse Code Modulation (ADPCM) is a lossy compression format, which means that some data is altered and lost during compression. ADPCM can achieve compression ratios of up to 4:1. 2-bit compressed voice file.