10 Things You Need to Know About Next Generation Audio Contents Introduction 4
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Ts 103 190-2 V1.2.1 (2018-02)
ETSI TS 103 190-2 V1.2.1 (2018-02) TECHNICAL SPECIFICATION Digital Audio Compression (AC-4) Standard; Part 2: Immersive and personalized audio 2 ETSI TS 103 190-2 V1.2.1 (2018-02) Reference RTS/JTC-043-2 Keywords audio, broadcasting, codec, content, digital, distribution, object audio, personalization 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 https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx 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. -
Dolby AC-4, Please Visit Dolby.Com/AC-4
NEXT-GENERATION AUDIO Dolby ® AC-4 For more information on Dolby AC-4, please visit Dolby.com/AC-4. ® ® NEX T-GENERATION AUDIO ED2 OR Dolby AC-4 PCM & METADATA AC-3 AC-4 PCM Integrating Personalized and Immersive Programming into Broadcast Operations The diagram below outlines a representative end-to-end signal flow for live and post-produced content through the broadcast ecosystem. PRODUCTION OPEN STANDARDS OUTSIDE BROADCAST BROADCASTER PAY TV OPERATOR CONFIDENCE MONITOR OUTPUT LEGACY RENDERER/ OBJECT AUDIO PROCESSOR ENCODER CHANNEL AUDIO OBJECT METADATA AUDIO MONITORING METADATA ANALYSIS GENERATION DISTRIBUTION INTEGRATED ENCODER RECEIVER/ MASTER DECODER CONTROL CHANNEL METADATA & OBJECT CHANNEL / GROUPING EMISSION INTEGRATED EMISSION OBJECT ROUTER AND OBJECT AUDIO ENCODER RECEIVER/ ENCODER DEFINITION DECODER PASSTHROUGH ANALYSIS PCM RENDERING AND PROCESSING INGEST PLAYOUT AUDIO SERVER SERVER MONITORING METADATA PCM MEZZANINE CONTRIBUTION AD STREAMING TRANSPORT FORMAT ENCODER MODULATOR/ SERVER ENCODER ENCODING FIBER MUX MUX/ SPLICER STREAMING ENCODER POSTPRODUCTION CDN ANTENNA CDN CONFIDENCE MONITOR OUTPUT OBJECT AUDIO PROCESSOR IN THE HOME SET-TOP BOX CHANNEL METADATA OBJECT AUDIO METADATA ANALYSIS GENERATION DEMODULATOR CHANNEL METADATA & OBJECT CHANNEL / ® GROUPING OBJECT AC-4 HDMI AND OBJECT AUDIO DECODER FORMATTER DEFINITION ANALYSIS PCM RENDERING AND PROCESSING TABLET/SMARTPHONE TV TO AVR / SOUNDBAR METADATA TO HEADPHONES TO SPEAKERS PCM ITU-R BWAV ADM (MXF, IMF) PACKAGING OBJECT APP AC-4 HEADPHONE RECEIVER / AC-4 HDMI® & CHANNEL DECODER RENDERER PROCESSOR DECODER FORMATTER INTERCHANGE TO AVR / SOUND BAR METADATA ED2 ENCODER PCM AC-4 IMMERSIVENESS Dolby AC-4 natively supports immersive audio to move sound around the audience in three-dimensional space. Both channel-based and object-based immersive audio can be delivered to the home and played back on speakers or headphones. -
Implementing Object-Based Audio in Radio Broadcasting
Object-based Audio in Radio Broadcast Implementing Object-based audio in radio broadcasting Diplomarbeit Ausgeführt zum Zweck der Erlangung des akademischen Grades Dipl.-Ing. für technisch-wissenschaftliche Berufe am Masterstudiengang Digitale Medientechnologien and der Fachhochschule St. Pölten, Masterkalsse Audio Design von: Baran Vlad DM161567 Betreuer/in und Erstbegutachter/in: FH-Prof. Dipl.-Ing Franz Zotlöterer Zweitbegutacher/in:FH Lektor. Dipl.-Ing Stefan Lainer [Wien, 09.09.2019] I Ehrenwörtliche Erklärung Ich versichere, dass - ich diese Arbeit selbständig verfasst, andere als die angegebenen Quellen und Hilfsmittel nicht benutzt und mich auch sonst keiner unerlaubten Hilfe bedient habe. - ich dieses Thema bisher weder im Inland noch im Ausland einem Begutachter/einer Begutachterin zur Beurteilung oder in irgendeiner Form als Prüfungsarbeit vorgelegt habe. Diese Arbeit stimmt mit der vom Begutachter bzw. der Begutachterin beurteilten Arbeit überein. .................................................. ................................................ Ort, Datum Unterschrift II Kurzfassung Die Wissenschaft der objektbasierten Tonherstellung befasst sich mit einer neuen Art der Übermittlung von räumlichen Informationen, die sich von kanalbasierten Systemen wegbewegen, hin zu einem Ansatz, der Ton unabhängig von dem Gerät verarbeitet, auf dem es gerendert wird. Diese objektbasierten Systeme behandeln Tonelemente als Objekte, die mit Metadaten verknüpft sind, welche ihr Verhalten beschreiben. Bisher wurde diese Forschungen vorwiegend -
Lasa Journal 8 Pp.36- 43) to Set up a Working Group with Us
laSa• International Association of Sound and Audiovisual Archives Association Internationale d' Archives Sonoreset Audiovisuelles Internationale Vereinigung der Schall- und Audiovisuellen Archive laSa• journal (formerly Phonographic Bulletin) no. 9 May 1997 IASA JOURNAL Journal of the International Association of Sound and Audiovisual Archives IASA Organie de l'Association Internationale d'Archives Sonores et Audiovisuelle IASA Zeitschchrift der Internationalen Vereinigung der Schall- und Audiovisuellen Archive IASA Editor: Chris Clark, The British Library National Sound Archive, 29 Exhibition Road, London SW7 2AS, UK. Fax 441714127413, e-mail [email protected] Reviews and Recent Publications Editor: Pekka Gronow, Finnish Broadcasting Company, PO Box 10, SF-00241, Helsinki, Finland. Fax 358014802089 The IASA Journal is published twice a year and is sent to all members of IASA. Applications for membership of IASA should be sent to the Secretary General (see list of officers below). The annual dues are 25GBP for individual members and 100GBP for institutional members. Back copies of the IASA Journal from -1971 are available on application. Subscriptions to the current year's issues of the IASA Journal are also available to non-members at a cost of 35GBP. Le IASA Journal est publie deux fois I'an et distribue a tous les membres. Veuilliez envoyer vos demandes d'adhesion au secretaire dont vous trouverez I'adresse ci-dessous. Les cotisations anuelles sont en ce moment de 25GBP pour les membres individuels et 100GBP pour les membres institutionelles. Les numeros precedeentes (a partir de 1971) du IASA Journal sont disponibles sure demande. Ceux qui ne sont pas membres de I' Assoociation puevent obtenir un abonnement du IASA Journal pour I'annee courante au cout de 35GBP. -
Audio Coding for Digital Broadcasting
Recommendation ITU-R BS.1196-7 (01/2019) Audio coding for digital broadcasting BS Series Broadcasting service (sound) ii Rec. ITU-R BS.1196-7 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio- frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Resolution ITU-R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http://www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series of ITU-R Recommendations (Also available online at http://www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management SNG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. -
Surround Sound Processed by Opus Codec: a Perceptual Quality Assessment
28. Konferenz Elektronische Sprachsignalverarbeitung 2017, Saarbrücken SURROUND SOUND PROCESSED BY OPUS CODEC: APERCEPTUAL QUALITY ASSESSMENT Franziska Trojahn, Martin Meszaros, Michael Maruschke and Oliver Jokisch Hochschule für Telekommunikation Leipzig, Germany [email protected] Abstract: The article describes the first perceptual quality study of 5.1 surround sound that has been processed by the Opus codec standardised by the Internet Engineering Task Force (IETF). All listening sessions with up to five subjects took place in a slightly sound absorbing laboratory – simulating living room conditions. For the assessment we conducted a Degradation Category Rating (DCR) listening- opinion test according to ITU-T P.800 recommendation with stimuli for six channels at total bitrates between 96 kbit/s and 192 kbit/s as well as hidden references. A group of 27 naive listeners compared a total of 20 sound samples. The differences between uncompressed and degraded sound samples were rated on a five-point degradation category scale resulting in Degradation Mean Opinion Score (DMOS). The overall results show that the average quality correlates with the bitrates. The quality diverges for the individual test stimuli depending on the music characteristics. Under most circumstances, a bitrate of 128 kbit/s is sufficient to achieve acceptable quality. 1 Introduction Nowadays, a high number of different speech and audio codecs are implemented in several kinds of multimedia applications; including audio / video entertainment, broadcasting and gaming. In recent years the demand for low delay and high quality audio applications, such as remote real-time jamming and cloud gaming, has been increasing. Therefore, current research objectives do not only include close to natural speech or audio quality, but also the requirements of low bitrates and a minimum latency. -
Lynn Olson: a Tiny History of High Fidelity
A Tiny History of High Fidelity, Part 1 A Rainy Night in Portland, 1936. Thanks to the restoration movement, much of downtown Portland still looks like this. Where do I come from? Where am I going? Who am I? These ancient questions are with us still. With only the slightest of changes, they can be recast into a form that provides a guidepost to the music lover, the audiophile, the hobbyist, and the artisan-engineer. Where does the art of sound reproduction come from? Where is it going? What do I seek from this art? Radio! 1900-1930 In the first years of Electrical Amplification, engineers had their hands full just trying to master the complex and non-intuitive mathematics of vacuum tube amplifiers and oscillators. It is worth keeping in mind that vacuum tubes were electronics in the first half of the Twentieth Century; before Lee DeForest modified Edison's light-bulb, the only form of "amplification" were relays that could repeat and rebuild telegraph signals. Radio relied on tuned circuits, massive brute-force spark-gap transmitters, large long-wave antennas, and crystal-diode rectification that directly powered the headphones. The faint signal that wiggled the headset diaphragm was a infinitesimal fraction of the megawatts that poured in all directions from the transmitter. Records, of course, were purely mechanical and acoustic, and wouldn't work at all if it weren't for horn-gain in recording and playback. What we now think of as electronic engineering back then was electrical engineering, focussed on keeping AC power transmission systems in phase and specialized techniques for pushing a telephone-audio signal down hundreds of miles of wire without benefit of amplification. -
Operating Instructions Blu-Ray Disc Home Theater Sound System SC
BT300.book 1 ページ 2009年6月12日 金曜日 午後12時13分 Operating Instructions Blu-ray Disc Home Theater Sound System Model No. SC-BT303 SC-BT300 SC-BT203 SC-BT200 The illustration shows the image of the unit SC-BT300 with “P” indicated on the packaging. Dear customer Thank you for purchasing this product. For optimum performance and safety, please read these instructions carefully. Before connecting, operating or adjusting this product, please read the instructions completely. Please keep this manual for future reference. To update the firmware of this unit, refer to page 32. Region management information BD-Video Example: This unit plays BD-Video marked with labels containing the region code A. DVD-Video Example: This unit plays DVD-Video marked with labels containing the region number “1” or “ALL”. 1 2 1 ALL 4 [For[the[U.S.A.[and[Canada[ ® If you have any questions contact As an ENERGY STAR Partner, [U.S.A.]and]Puerto]Rico]:1-800-211-PANA(7262) Panasonic has determined that [Canada]: 1-800-561-5505 this product meets the ENERGY STAR® guidelines for energy efficiency. [Only]for[U.S.A.]and]Puerto]Rico]: The warranty can be found on page 58. For Canada only: The word “Participant” is used in place of the word [Canada]: The warranty can be found on page 59. “Partner”. P PC PX RQT9508-1P 2009/7/08 BT300.book 2 ページ 2009年6月12日 金曜日 午後12時13分 ≥These operating instructions are applicable System SC-BT300 SC-BT303 SC-BT200 SC-BT203 to models SC-BT300, SC-BT303, SC-BT200 Main unit SA-BT300 SA-BT300 SA-BT200 SA-BT203 Getting started and SC-BT203 for a variety of regions. -
Configure Surround Sound on an Intel NUC Or Comptue Stick
Surround Sound Setup Guide for NUC This guide will show the recommend method to setup surround sound through bitstreaming. Bitstreaming is the process whereby the NUC sends an un-encoded digital signal to an A/V receiver, to which the receiver will decode the signal, not the NUC, and often produces better quality sound, depending on the receiver. What is Needed: AV Receiver with HDMI or TOSLINK (SPDIF), if using optical audio Surround speakers (5.1 or 7.1) 2 HDMI cables or a TOSLINK cable (a mini DisplayPort to HDMI cable can also be used from the NUC to the Receiver) HDMI display, keyboard, mouse NUC running Windows* Media Player Classic* (https://mpc-hc.org/) 1. Download and install the latest Intel® graphics drivers (https://downloadcenter.intel.com/) 2. Connect the HDMI or mini DisplayPort cable from the NUC to an HDMI input of the AV receiver. If using TOSLINK on the NUC, connect the NUC’s TOSLINK output to a TOSLINK input on the receiver. 3. Start Windows* and download and install Media Player Classic* (MPC-HC) (http://mpc-hc.org/downloads/) 4. Open MPC-HC. On the Menu bar, click View, then Options. 5. On the left side menu tree, click on Internal Filters, then click on Video Decoder (on the bottom of the screen). 6. It’s suggested that Hardware Acceleration be used, especially if 4K content is played, choose a Hardware Acceleration option, then click OK. 7. If 4K or HEVC (h.265) content is going to be played, also select, HEVC, and UHD (4K). -
Lossless Compression of Audio Data
CHAPTER 12 Lossless Compression of Audio Data ROBERT C. MAHER OVERVIEW Lossless data compression of digital audio signals is useful when it is necessary to minimize the storage space or transmission bandwidth of audio data while still maintaining archival quality. Available techniques for lossless audio compression, or lossless audio packing, generally employ an adaptive waveform predictor with a variable-rate entropy coding of the residual, such as Huffman or Golomb-Rice coding. The amount of data compression can vary considerably from one audio waveform to another, but ratios of less than 3 are typical. Several freeware, shareware, and proprietary commercial lossless audio packing programs are available. 12.1 INTRODUCTION The Internet is increasingly being used as a means to deliver audio content to end-users for en tertainment, education, and commerce. It is clearly advantageous to minimize the time required to download an audio data file and the storage capacity required to hold it. Moreover, the expec tations of end-users with regard to signal quality, number of audio channels, meta-data such as song lyrics, and similar additional features provide incentives to compress the audio data. 12.1.1 Background In the past decade there have been significant breakthroughs in audio data compression using lossy perceptual coding [1]. These techniques lower the bit rate required to represent the signal by establishing perceptual error criteria, meaning that a model of human hearing perception is Copyright 2003. Elsevier Science (USA). 255 AU rights reserved. 256 PART III / APPLICATIONS used to guide the elimination of excess bits that can be either reconstructed (redundancy in the signal) orignored (inaudible components in the signal). -
Frequently Asked Questions Dolby Digital Plus
Frequently Asked Questions Dolby® Digital Plus redefines the home theater surround experience for new formats like high-definition video discs. What is Dolby Digital Plus? Dolby® Digital Plus is Dolby’s new-generation multichannel audio technology developed to enhance the premium experience of high-definition media. Built on industry-standard Dolby Digital technology, Dolby Digital Plus as implemented in Blu-ray Disc™ features more channels, less compression, and higher data rates for a warmer, richer, more compelling audio experience than you get from standard-definition DVDs. What other applications are there for Dolby Digital Plus? The advanced spectral coding efficiencies of Dolby Digital Plus enable content producers to deliver high-resolution multichannel soundtracks at lower bit rates than with Dolby Digital. This makes it ideal for emerging bandwidth-critical applications including cable, IPTV, IP streaming, and satellite (DBS) and terrestrial broadcast. Dolby Digital Plus is also a preferred medium for delivering BonusView (Profile 1.1) and BD-Live™ (Profile 2.0) interactive audio content on Blu-ray Disc. Delivering higher quality and more channels at higher bit rates, plus greater efficiency at lower bit rates, Dolby Digital Plus has the flexibility to fulfill the needs of new content delivery formats for years to come. Is Dolby Digital Plus content backward-compatible? Because Dolby Digital Plus is built on core Dolby Digital technologies, content that is encoded with Dolby Digital Plus is fully compatible with the millions of existing home theaters and playback systems worldwide equipped for Dolby Digital playback. Dolby Digital Plus soundtracks are easily converted to a 640 kbps Dolby Digital signal without decoding and reencoding, for output via S/PDIF. -
The Story of Alan Blumlein
Alan Dower Blumlein Of the men who were responsible for the development of the Marconi-EMI high-definition television system in the early 1930s, the name of Alan Dower Blumlein stands out. He was one of the most remarkable and significant engineers of the twentieth century. Yet, following his death in 1942, his work was shrouded in secrecy. He received neither obituary nor tributes. This article is based on Robert Alexander's book, which is the first comprehensive Blumlein biography hortly after 4.20 in the He simply found no need to be able afternoon on Sunday, 7 June to write. As with all things in his life S1942 — a glorious summer's up to this time, if he saw no need, he day, clear skies, warm sunshine and showed no interest. It was only perfect visibility for flying — a Halifax through sheer determination that Alan bomber crashed into the steep hillside Blumlein set himself the task of of a valley just north of the River learning to read detailed reference Wye near the village of Welsh books on his chosen subject, realising Bicknor in Herefordshire. All of its the need for this in order to advance eleven occupants were killed in the his passion for everything electrical. enormous fire that engulfed the aircraft on impact. After a slow start... Of the scientific personnel who died Blumlein's career initially took that day, Alan Dower Blumlein stands gradual steps. hi 1925, he co- out as possibly the greatest loss. "A published an elementary paper on national tragedy," one of his electrical principles in Wireless and later friend, Isaac Shoenberg, who Bernard colleagues would call it.