RFC 3190 (rfc3190) - Page 1 of 17
RTP Payload Format for 12-bit DAT Audio and 20- and 24-bit Linear Sampled Audio
Alternative Format: Original Text Document
Network Working Group K. Kobayashi
Request for Comments: 3190 Communication Research Laboratory
Category: Standards Track A. Ogawa
Keio University
S. Casner
Packet Design
C. Bormann
Universitaet Bremen TZI
January 2002
RTP Payload Format for
12-bit DAT Audio and 20- and 24-bit Linear Sampled Audio
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2002). All Rights Reserved.
Abstract
This document specifies a packetization scheme for encapsulating
12-bit nonlinear, 20-bit linear, and 24-bit linear audio data streams
using the Real-time Transport Protocol (RTP). This document also
specifies the format of a Session Description Protocol (SDP)
parameter to indicate when audio data is preemphasized before
sampling. The parameter may be used with other audio payload
formats, in particular L16 (16-bit linear).
1. Introduction
This document describes the sampling of audio data in 12-bit
nonlinear, 20-bit linear, and 24-bit linear encodings, and specifies
the encapsulation of the audio data into the Real-time Transport
Protocol (RTP), version 2 [1,2]. DAT (digital audio tape) and DV
(digital video) devices [3,4] use these audio encodings in addition
to 16-bit linear encoding. The packetization scheme for 16-bit
linear audio (L16) is already specified [2,5]. This document
specifies the packetization scheme for the other encodings following
that for L16; in particular, when used with the RTP profile [2],
these payload formats follow the encoding-independent rules for
Kobayashi, et al. Standards Track
