@techreport{joetansey-alvc-codec-02, number = {draft-joetansey-alvc-codec-02}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-joetansey-alvc-codec/02/}, author = {Joe Tansey}, title = {{Adaptive Layered Voice Container (ALVC) for Constrained Networks}}, pagetotal = 5, year = 2025, month = oct, day = 13, abstract = {This document specifies the Adaptive Layered Voice Container (ALVC), a codec-agnostic framing and metadata container that enables progressive voice delivery in constrained and lossy networks. ALVC defines a Base layer that is intelligible on its own at sub-kilobit rates, and optional Enhancement layers that improve quality when additional capacity is available. The container supports store-and- forward operation, progressive enhancement, unequal error protection signaling, and receiver behavior for seamless splice-and-improve playback. ALVC does not define a new speech coding algorithm; it multiplexes existing voice coders within a layered container.}, }