A 4 kb/s hybrid MELP/CELP speech coding candidate for ITU standardization. - Alan McCree; Jacek Stachurski; Takahiro Unno; Ali Erdem Ertan; Erdal Paksoy; Vishu Viswanathan; Ari Heikkinen; Anssi Rämö; Sakari Himanen; Peter Blöcher; Oliver Dressler (ICASSP, 2002)

Hybrid MELP/CELP coding at bit rates from 6.4 to 2.4 kb/s. - Jacek Stachurski; Alan McCree; Vishu Viswanathan; Ari Heikkinen; Anssi Rämö; Sakari Himanen; Peter Blöcher (ICASSP (2), 2003)

Exploiting time warping in AMR-NB and AMR-WB speech coders. - Lasse Laaksonen; Sakari Himanen; Ari Heikkinen; Jani Nurminen (INTERSPEECH, 2003)

Segmental speech coding model for storage applications. - Anssi Rämö; Jani Nurminen; Sakari Himanen; Ari Heikkinen (INTERSPEECH, 2004)