ADPCM TRANSCODER USING the CCITT RECOMl.ENDATION G.721

[1]  Rikio Maruta,et al.  Synchronous Tandem Algorithm for 32-kbit/s ADPCM , 1985, IEEE Trans. Commun..

[2]  M. Sato,et al.  A single chip signal processor for CCITT standard ADPCM codec , 1985, 1985 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.