Codec for Immersive Voice and Audio Services (IVAS); Jitter Buffer Management
The present document defines the Jitter Buffer Management (JBM) solution for the Immersive Voice and Audio Services (IVAS) codec [2]. Jitter Buffers are required in packet-based communications, such as 3GPP MTSI [7], to smooth the inter-arrival jitter of incoming media packets for uninterrupted playout.
The procedure of the present document is recommended for implementation in all network entities and UEs supporting the IVAS codec; procedures described in [4] and used in this document, such as multi-channel time-scale modification, metadata adaptation and rendering are mandatory for implementations in all network entities and UEs supporting the IVAS codec.
The present document does not describe the C code of this procedure. For a description of the floating-point C code implementation see [3].
In the case of discrepancy between the Jitter Buffer Management described in the present document and its C code specification contained in [3], the procedure defined by [3] prevails.