Influence of Speech Codecs Selection on Transcoding Steganography
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Omtp Codecs 1 0, Release 1
OMTP CODECS DEFINITION AND REQUIREMENTS This document contains information that is confidential and proprietary to OMTP Limited. The information may not be used, disclosed or reproduced without the prior written authorisation of OMTP Limited, and those so authorised may only use this information for the purpose consistent with the authorisation. VERSION: OMTP CODECS 1_0, RELEASE 1 STATUS: SUBJECT TO BE - APPROVED BY BOARD 21 JULY 2005 DATE OF LAST EDIT: 6 JULY 2005 OWNER: P4: HARDWARE REQUIREMENTS AND DE- FRAGMENTATION OMTP CODECS CONTENTS 1 INTRODUCTION ............................................................................4 1.1 DOCUMENT PURPOSE ..........................................................................4 1.2 INTENDED AUDIENCE ............................................................................5 2 DEFINITION OF TERMS .................................................................7 2.1 CONVENTIONS .....................................................................................7 3 OMTP CODEC PROFILES ............................................................8 3.1 AUDIO DECODE....................................................................................8 3.2 AUDIO ENCODE....................................................................................9 3.3 VIDEO DECODE....................................................................................9 3.4 VIDEO ENCODE....................................................................................9 3.5 IMAGE DECODE..................................................................................10 -
Packetcable™ 2.0 Codec and Media Specification PKT-SP-CODEC
PacketCable™ 2.0 Codec and Media Specification PKT-SP-CODEC-MEDIA-I10-120412 ISSUED Notice This PacketCable specification is the result of a cooperative effort undertaken at the direction of Cable Television Laboratories, Inc. for the benefit of the cable industry and its customers. This document may contain references to other documents not owned or controlled by CableLabs. Use and understanding of this document may require access to such other documents. Designing, manufacturing, distributing, using, selling, or servicing products, or providing services, based on this document may require intellectual property licenses from third parties for technology referenced in this document. Neither CableLabs nor any member company is responsible to any party for any liability of any nature whatsoever resulting from or arising out of use or reliance upon this document, or any document referenced herein. This document is furnished on an "AS IS" basis and neither CableLabs nor its members provides any representation or warranty, express or implied, regarding the accuracy, completeness, noninfringement, or fitness for a particular purpose of this document, or any document referenced herein. 2006-2012 Cable Television Laboratories, Inc. All rights reserved. PKT-SP-CODEC-MEDIA-I10-120412 PacketCable™ 2.0 Document Status Sheet Document Control Number: PKT-SP-CODEC-MEDIA-I10-120412 Document Title: Codec and Media Specification Revision History: I01 - Released 04/05/06 I02 - Released 10/13/06 I03 - Released 09/25/07 I04 - Released 04/25/08 I05 - Released 07/10/08 I06 - Released 05/28/09 I07 - Released 07/02/09 I08 - Released 01/20/10 I09 - Released 05/27/10 I10 – Released 04/12/12 Date: April 12, 2012 Status: Work in Draft Issued Closed Progress Distribution Restrictions: Authors CL/Member CL/ Member/ Public Only Vendor Key to Document Status Codes: Work in Progress An incomplete document, designed to guide discussion and generate feedback, that may include several alternative requirements for consideration. -
Space Application Development Board
Space Application Development Board The Space Application Development Board (SADB-C6727B) enables developers to implement systems using standard and custom algorithms on processor hardware similar to what would be deployed for space in a fully radiation hardened (rad-hard) design. The SADB-C6727B is devised to be similar to a space qualified rad-hardened system design using the TI SMV320C6727B-SP DSP and high-rel memories (SRAM, SDRAM, NOR FLASH) from Cobham. The VOCAL SADB- C6727B development board does not use these high reliability space qualified components but rather implements various common bus widths and memory types/speeds for algorithm development and performance evaluation. VOCAL Technologies, Ltd. www.vocal.com 520 Lee Entrance, Suite 202 Tel: (716) 688-4675 Buffalo, New York 14228 Fax: (716) 639-0713 Audio inputs are handled by a TI ADS1278 high speed multichannel analog-to-digital converter (ADC) which has a variant qualified for space operation. Audio outputs may be generated from digital signal Pulse Density Modulation (PDM) or Pulse Width Modulation (PWM) signals to avoid the need for a space qualified digital-to-analog converter (DAC) hardware or a traditional audio codec circuit. A commercial grade AIC3106 audio codec is provided for algorithm development and for comparison of audio performance to PDM/PWM generated audio signals. Digital microphones (PDM or I2S formats) can be sampled by the processor directly or by the AIC3106 audio codec (PDM format only). Digital audio inputs/outputs can also be connected to other processors (using the McASP signals directly). Both SRAM and SDRAM memories are supported via configuration resistors to allow for developing and benchmarking algorithms using either 16-bit wide or 32-bit wide busses (also via configuration resistors). -
Concatenation of Compression Codecs – the Need for Objective Evaluations
Concatenation of compression codecs – The need for objective evaluations C.J. Dalton (UKIB) In this article the Author considers, firstly, a hypothetical broadcast network in which compression equipments have replaced several existing functions – resulting in multiple-cascading. Secondly, he describes a similar network that has been optimized for compression technology. Picture-quality assessment methods – both conventional and new, fied for still-picture applications in the printing in- subjective and objective – are dustry and was adapted to motion video applica- discussed with the aim of providing tions, by encoding on a picture-by-picture basis. background information. Some Various proprietary versions of JPEG, with higher proposals are put forward for compression ratios, were introduced to reduce the objective evaluation together with storage requirements, and alternative systems based on Wavelets and Fractals have been imple- initial observations when concaten- mented. Due to the availability of integrated hard- ating (cascading) codecs of similar ware, motion JPEG is now widely used for off- and different types. and on-line editing, disc servers, slow-motion sys- tems, etc., but there is little standardization and few interfaces at the compressed level. The MPEG-1 compression standard was aimed at 1. Introduction progressively-scanned moving images and has been widely adopted for CD-ROM and similar ap- Bit-rate reduction (BRR) techniques – commonly plications; it has also found limited application for referred to as compression – are now firmly estab- broadcast video. The MPEG-2 system is specifi- lished in the latest generation of broadcast televi- cally targeted at the complete gamut of video sys- sion equipments. tems; for standard-definition television, the MP@ML codec – with compression ratios of 20:1 Original language: English Manuscript received 15/1/97. -
Ffmpeg Documentation Table of Contents
ffmpeg Documentation Table of Contents 1 Synopsis 2 Description 3 Detailed description 3.1 Filtering 3.1.1 Simple filtergraphs 3.1.2 Complex filtergraphs 3.2 Stream copy 4 Stream selection 5 Options 5.1 Stream specifiers 5.2 Generic options 5.3 AVOptions 5.4 Main options 5.5 Video Options 5.6 Advanced Video options 5.7 Audio Options 5.8 Advanced Audio options 5.9 Subtitle options 5.10 Advanced Subtitle options 5.11 Advanced options 5.12 Preset files 6 Tips 7 Examples 7.1 Preset files 7.2 Video and Audio grabbing 7.3 X11 grabbing 7.4 Video and Audio file format conversion 8 Syntax 8.1 Quoting and escaping 8.1.1 Examples 8.2 Date 8.3 Time duration 8.3.1 Examples 8.4 Video size 8.5 Video rate 8.6 Ratio 8.7 Color 8.8 Channel Layout 9 Expression Evaluation 10 OpenCL Options 11 Codec Options 12 Decoders 13 Video Decoders 13.1 rawvideo 13.1.1 Options 14 Audio Decoders 14.1 ac3 14.1.1 AC-3 Decoder Options 14.2 ffwavesynth 14.3 libcelt 14.4 libgsm 14.5 libilbc 14.5.1 Options 14.6 libopencore-amrnb 14.7 libopencore-amrwb 14.8 libopus 15 Subtitles Decoders 15.1 dvdsub 15.1.1 Options 15.2 libzvbi-teletext 15.2.1 Options 16 Encoders 17 Audio Encoders 17.1 aac 17.1.1 Options 17.2 ac3 and ac3_fixed 17.2.1 AC-3 Metadata 17.2.1.1 Metadata Control Options 17.2.1.2 Downmix Levels 17.2.1.3 Audio Production Information 17.2.1.4 Other Metadata Options 17.2.2 Extended Bitstream Information 17.2.2.1 Extended Bitstream Information - Part 1 17.2.2.2 Extended Bitstream Information - Part 2 17.2.3 Other AC-3 Encoding Options 17.2.4 Floating-Point-Only AC-3 Encoding -
TR 101 329-7 V1.1.1 (2000-11) Technical Report
ETSI TR 101 329-7 V1.1.1 (2000-11) Technical Report TIPHON; Design Guide; Part 7: Design Guide for Elements of a TIPHON connection from an end-to-end speech transmission performance point of view 2 ETSI TR 101 329-7 V1.1.1 (2000-11) Reference DTR/TIPHON-05011 Keywords internet, IP, network, performance, protocol, quality, speech, voice ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.:+33492944200 Fax:+33493654716 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://www.etsi.org/tb/status/ If you find errors in the present document, send your comment to: [email protected] Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. -
Ffmpeg Codecs Documentation Table of Contents
FFmpeg Codecs Documentation Table of Contents 1 Description 2 Codec Options 3 Decoders 4 Video Decoders 4.1 hevc 4.2 rawvideo 4.2.1 Options 5 Audio Decoders 5.1 ac3 5.1.1 AC-3 Decoder Options 5.2 flac 5.2.1 FLAC Decoder options 5.3 ffwavesynth 5.4 libcelt 5.5 libgsm 5.6 libilbc 5.6.1 Options 5.7 libopencore-amrnb 5.8 libopencore-amrwb 5.9 libopus 6 Subtitles Decoders 6.1 dvbsub 6.1.1 Options 6.2 dvdsub 6.2.1 Options 6.3 libzvbi-teletext 6.3.1 Options 7 Encoders 8 Audio Encoders 8.1 aac 8.1.1 Options 8.2 ac3 and ac3_fixed 8.2.1 AC-3 Metadata 8.2.1.1 Metadata Control Options 8.2.1.2 Downmix Levels 8.2.1.3 Audio Production Information 8.2.1.4 Other Metadata Options 8.2.2 Extended Bitstream Information 8.2.2.1 Extended Bitstream Information - Part 1 8.2.2.2 Extended Bitstream Information - Part 2 8.2.3 Other AC-3 Encoding Options 8.2.4 Floating-Point-Only AC-3 Encoding Options 8.3 flac 8.3.1 Options 8.4 opus 8.4.1 Options 8.5 libfdk_aac 8.5.1 Options 8.5.2 Examples 8.6 libmp3lame 8.6.1 Options 8.7 libopencore-amrnb 8.7.1 Options 8.8 libopus 8.8.1 Option Mapping 8.9 libshine 8.9.1 Options 8.10 libtwolame 8.10.1 Options 8.11 libvo-amrwbenc 8.11.1 Options 8.12 libvorbis 8.12.1 Options 8.13 libwavpack 8.13.1 Options 8.14 mjpeg 8.14.1 Options 8.15 wavpack 8.15.1 Options 8.15.1.1 Shared options 8.15.1.2 Private options 9 Video Encoders 9.1 Hap 9.1.1 Options 9.2 jpeg2000 9.2.1 Options 9.3 libkvazaar 9.3.1 Options 9.4 libopenh264 9.4.1 Options 9.5 libtheora 9.5.1 Options 9.5.2 Examples 9.6 libvpx 9.6.1 Options 9.7 libwebp 9.7.1 Pixel Format 9.7.2 Options 9.8 libx264, libx264rgb 9.8.1 Supported Pixel Formats 9.8.2 Options 9.9 libx265 9.9.1 Options 9.10 libxvid 9.10.1 Options 9.11 mpeg2 9.11.1 Options 9.12 png 9.12.1 Private options 9.13 ProRes 9.13.1 Private Options for prores-ks 9.13.2 Speed considerations 9.14 QSV encoders 9.15 snow 9.15.1 Options 9.16 vc2 9.16.1 Options 10 Subtitles Encoders 10.1 dvdsub 10.1.1 Options 11 See Also 12 Authors 1 Description# TOC This document describes the codecs (decoders and encoders) provided by the libavcodec library. -
Essential Technology for High-Compression Speech Coding Takehiro Moriya
Information LSP (Line Spectrum Pair): Essential Technology for High-compression Speech Coding Takehiro Moriya Abstract Line Spectrum Pair (LSP) technology was accepted as an IEEE (Institute of Electrical and Electronics Engineers) Milestone in 204. LSP, invented by Dr. Fumitada Itakura at NTT in 975, is an efficient method for representing speech spectra, namely, the shape of the vocal tract. A speech synthesis large-scale integration chip based on LSP was fabricated in 980. Since the 990s, LSP has been adopted in many speech coding standards as an essential component, and it is still used worldwide in almost all cellular phones and Internet protocol phones. Keywords: LSP, speech coding, cellular phone 1. Introduction President and CEO of NTT (Photo 2), at a ceremony held in Tokyo. The citation reads, “Line Spectrum On May 22, 204, Line Spectrum Pair (LSP) tech- Pair (LSP) for high-compression speech coding, nology was officially recognized as an Institute of 975. Line Spectrum Pair, invented at NTT in 975, Electrical and Electronics Engineers (IEEE) Mile- is an important technology for speech synthesis and stone. Dr. J. Roberto de Marca, President of IEEE, coding. A speech synthesizer chip was designed presented the plaque (Photo 1) to Mr. Hiroo Unoura, based on Line Spectrum Pair in 980. In the 990s, Photo 1. Plaque of IEEE Milestone for Line Spectrum Pair (LSP) for high-compression speech coding. Photo 2. From IEEE president to NTT president. NTT Technical Review Information this technology was adopted in almost all interna- better quantization and interpolation performance tional speech coding standards as an essential compo- than PARCOR. -
Low Rate Speech Coding and Random Bit Errors: a Subjective Speech Quality Matching Experiment
NTIA Technical Report TR-10-462 Low Rate Speech Coding and Random Bit Errors: A Subjective Speech Quality Matching Experiment Andrew A. Catellier Stephen D. Voran NTIA Technical Report TR-10-462 Low Rate Speech Coding and Random Bit Errors: A Subjective Speech Quality Matching Experiment Andrew A. Catellier Stephen D. Voran U.S. DEPARTMENT OF COMMERCE Gary Locke, Secretary Lawrence E. Strickling, Assistant Secretary for Communications and Information October 2009 DISCLAIMER Certain commercial equipment, instruments, or materials are identified in this report to adequately describe the experimental procedure. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the material or equipment identified is necessarily the best available for the purpose. iii CONTENTS Page FIGURES ............................................ vi TABLES ............................................. vii 1 INTRODUCTION ..................................... 1 2 EXPERIMENT DESCRIPTION .............................. 3 2.1 Speech Recordings . 3 2.2 Experiment Procedure . 4 2.3 Listeners . 5 2.4 Speech Quality Matching Algorithm . 5 2.5 Speech Coding and Bit Errors . 7 2.6 Bookkeeping . 10 2.7 Objective Speech Quality Estimation . 10 3 RESULTS .......................................... 13 3.1 Listening Experiment . 13 3.2 Objective Estimation . 14 3.3 Bit Error Statistics . 16 4 CONCLUSIONS ...................................... 18 5 ACKNOWLEDGEMENTS ................................. 19 6 REFERENCES ....................................... 20 v FIGURES Page Figure 1. The human interface used during the experiment. 5 Figure 2. Signal flow through the encoding, bit error, and decoding processes. 7 Figure 3. Example bit error patterns that conform with the subset property. BER is 15, 10, and 5% in the top, middle and bottom panels, respectively. 9 Figure 4. -
Ts 148 060 V13.0.0 (2016-01)
ETSI TS 1148 060 V13.0.0 (201616-01) TECHNICAL SPECIFICATIONION Digital cellular telecocommunications system (Phahase 2+); In-band control of remremote transcoders and rate aadaptors for fullull rate traffic channels (3GPP TS 48.0.060 version 13.0.0 Release 13) R GLOBAL SYSTETEM FOR MOBILE COMMUNUNICATIONS 3GPP TS 48.060 version 13.0.0 Release 13 1 ETSI TS 148 060 V13.0.0 (2016-01) Reference RTS/TSGG-0148060vd00 Keywords GSM ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. -
Technical Manual Creating Media for the Motorola V1100
Technical Manual Creating Media for the Motorola V1100 Version 01.00 Table of Contents TABLE OF CONTENTS ............................................................................................................................. 2 TABLE OF FIGURES ................................................................................................................................. 3 INDEX OF TABLES.................................................................................................................................... 4 OVERVIEW ................................................................................................................................................. 5 GLOSSARY ................................................................................................................................................... 5 REFERENCES ............................................................................................................................................... 6 REVISION HISTORY ..................................................................................................................................... 6 DISPLAY ...................................................................................................................................................... 7 DISPLAY INFO ............................................................................................................................................. 8 GRAPHICS & VIDEO................................................................................................................................ -
G.729/A Speech Coder: Multichannel Tms320c62x Implementation (Rev. B)
Application Report SPRA564B - February 2000 G.729/A Speech Coder: Multichannel TMS320C62x Implementation Chiouguey Chen C6000 Applications Xiangdong Fu ABSTRACT This document provides a detailed description of the implementation of the G.729 speech encoder and decoder (codec) on the Texas Instruments (TI) TMS320C6201 digital signal processor (DSP). Topics include program structure, code writing rules, data/program memory requirements, and performance evaluation. Issues regarding multichannel implementation and interrupts are also addressed. Contents 1 Introduction . 2 2 Multichannel System . 2 3 Algorithm Description . 4 3.1 Encoder Structure . 4 3.2 Decoder Structure . 5 4 Coding Guidelines . 5 4.1 Variable, Array, and Pointer Names. 5 4.2 Math Operations . 5 4.3 Tables and Functions. 5 4.4 Interrupt Issues . 5 4.4.1 Interrupts at the Frame Boundary. 6 4.4.2 Interrupts at the Submodule Boundary. 6 5 Data Memory Requirements. 6 5.1 Memory for Context Data. 6 5.2 Memory for Tables . 8 5.3 Memory for Local Variables and Arrays. 10 6 Performance/Code Size Results. 10 7 References . 10 List of Figures Figure 1. Framework Initialization. 3 Figure 2. Framework Kernel . 3 List of Tables Table 1. Encoder Context Data Structure (ENCODER_G729_MEM_BLK). 7 Table 2. Decoder Context Data Structure (DECODER_G729_MEM_BLK). 8 Table 3. List of G.729_TABLES. 9 Table 4. G.729/A Performance/Code Size Results. 10 TI is a trademark of Texas Instruments Incorporated. 1 SPRA564B 1 Introduction This document provides a detailed description of the implementation of the G.729/A speech encoder and decoder (codec) the Texas Instruments (TI) TMS320C6201 digital signal processor (DSP).