RFC 3625 (rfc3625) - Page 2 of 15
The QCP File Format and Media Types for Speech Data
Alternative Format: Original Text Document
RFC 3625 QCP File Format and Media Types September 2003
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Conventions Used in this Document. . . . . . . . . . . . . . . 2
3. QCP File Format. . . . . . . . . . . . . . . . . . . . . . . . 2
4. IANA Considerations. . . . . . . . . . . . . . . . . . . . . . 10
4.1. Update of Media Type Audio/qcelp . . . . . . . . . . . . 10
4.2. Update of Media Type Audio/vnd.qcelp . . . . . . . . . . 10
4.3. Registration of Audio/EVRC-QCP . . . . . . . . . . . . . 11
4.4. Registration of Audio/SMV-QCP. . . . . . . . . . . . . . 12
5. Security Considerations. . . . . . . . . . . . . . . . . . . . 13
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 13
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.1. Normative References . . . . . . . . . . . . . . . . . . 13
7.2. Informative References . . . . . . . . . . . . . . . . . 13
8. Intellectual Property Statement. . . . . . . . . . . . . . . . 14
9. Editors' Addresses . . . . . . . . . . . . . . . . . . . . . . 14
10. Full Copyright Statement . . . . . . . . . . . . . . . . . . . 15
1. Introduction
This document specifies the QCP format for storage of [QCELP] 13K,
[EVRC], and [SMV] vocoder frames in files which may reside on network
elements (e.g., media servers, Multimedia Messaging System (MMS)
centers, etc.) and third-generation cellular (3G) handsets, or be
transmitted via email or other mechanisms.
Vocoder frames read from a QCP file may be streamed using protocols
and formats outside the scope of this document, delivered to an
[EVRC], [SMV], or [QCELP] 13K decoder, or otherwise processed.
The QCP format supports [QCELP] 13K as well as [EVRC] and [SMV] data.
Note that this format is different from the EVRC and SMV storage
format specified in [EVRC-SMV].
2. Conventions Used in this Document
The key words "REQUIRED", "MUST", "MUST NOT", "SHOULD", "SHOULD NOT",
and "MAY" in this document are to be interpreted as described in BCP
14, RFC 2119 [KEYWORDS].
3. QCP File Format
The following describes the QCP file format using [ABNF].
A qcp file contains data frames generated by the [QCELP], [EVRC], or
[SMV] vocoders.
Gellens & Garudadri Informational