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Selectable Mode Vocoder (SMV) is variable bitrate speech coding standard used in CDMA2000 networks.^[1] SMV provides multiple modes of operation that are selected based on input speech characteristics.

^ "3GPP2 C.S0030-0 Selectable Mode Vocoder (SMV) Service Option for Wideband Spread Spectrum Communication Systems" (PDF). 3rd Generation Partnership Project 2. 2004. Archived from the original (PDF) on 2011-07-23. Retrieved 2009-05-26.