Troubleshooting Sirius Radio CodecAugust 23, 2020 by Frank Maiden
Sometimes your system may display a Sirius radio codec message. There can be several reasons for this problem.
He is available on 158 (formerly channel 95 on Sirius where he replaced Rumb n on November 12, 2008), and previously on channel 85 on XM and channel 6095 on the Dish Network. Prior to February 9, 2010, DirecTV turned on channel 869, but all Sirius XM music channels were dropped by DMX in favor of Sonic Tap.
New High Performance MPEG-4 AAC Audio - Lets You Create New Applications
MPEG-4 High Afficiency AAC is a combination of MPEG AAC change and SBR bandwidth expansion, which was held at the March 2003 MPEG meeting. The change is based on Coding Technologies' SBR (Spectral Band Replication) technology, which Coding Technologies and its customers use under the aacPlus ™ brand. In June 2001, XM Radio was the first commercial system to use the highly efficient AAC system. Since then, it has been gaining traction in the market, offering stereo CD quality at 48Kbps and superb stereo quality at 32Kbps. Its value was recognized by MPEG at the end of 2001, and is now on track to become the baseline profile for MPEG-4 audio called "High-Efficiency AAC".
High Performance MPEG-4 AAC (HE AAC) is not a replacement for AAC, but a superset that expands the range of high-quality MPEG-4 audio at significantly lower bit rates. High performance AAC decoders decode both simple AAC and enhanced AAC plus SBR. The result is a backward compatible extension of the standard that is almost doubles the efficiency of MPEG-4 audio.
SBR is a unique bandwidth expansion technology that allows audio codecs to provide the same listening experience at about half the data rate. As a result, AAC offers high-quality stereo CD quality at 48Kbps and 5.1-channel surround sound at 128Kbps. This level of efficiency is ideal for delivering internet content and, in fact, allows new applications to be created in the mobile and digital streaming markets.
According to Coding Technologies, SBR technology licensing follows a simple MPEG-4 AAC licensing model with annual restrictions for PC applications, one-off hardware device fees, and no additional music sales fees. electronic. This licensing structure and its technical capabilities aim to make HE-AAC well suited for commercial content services.
In March 2003, MPEG Audio took a big step forward with the highly efficient AAC specification. To meet the requirements of digital televisionand the audio industry MPEG-2 AAC LC plus SBR are also standardized as a replacement for MPEG-2 AAC (MPEG-2 Part 7). This means that wherever MPEG-2 and MPEG-4 AAC are used today, system operators can use new, open and standardized technologies to halve their bandwidth requirements.
In addition, MPEG also recognized a low power decoder option for HE AAC. This low power decoding technique, jointly developed by Panasonic, NEC and Coding Technologies, requires 40% less processing power and decodes HE-AAC bitstreams with slightly reduced audio quality. The availability of low-efficiency and high-quality decoders for HE AAC allows the standard to operate on the widest possible range of processors in mobile and portable applications.
Several independent tests have been conducted over the past 2 years to demonstrate the value of MPEG-4 HE AAC versus “regular” AAC, other audio coding standards and proprietary codecs. These tests show that MPEG-4 HE AAC offers significant an advantage over these proprietary codecs and over AAC without extensions and clearly calls it the most efficient audio codec ever.
MPEG performed a hearing test when selecting course technology for MPEG-4 audio enhancement 1. For the MPEG test, experienced listeners used the MUSHRA blind test method to score subjects against a relatively known uncoded reference. As usual with MPEG tests, elements known to be difficult to code correctly (eg harpsichord, glockenspiel, pitch, German male, castanets) were used. Despite this high bar, HE AAC performed absolutely well and improved AAC significantly.
Digital Radio Mondiale is an international industrial consortium creating a new global standard for digital broadcasting in the AM bands below 30 MHz. Their technology selection tests targeted mono 24Kbps and also used the MUSHRA method with medium broadcast content. HE AAC again showed superior performance even when compared to 32Kbps AAC.
In 2002, the European Broadcasting Union (EBU) conducted a second round of internet audio tests. In this test suite, a variety of multi-bitrate codecs were compared against Coding Technologies' aacPlus with 48Kbps contained in the mix. These results show that aacPlus (currently standardized as HE AAC) is the clear winner, clearly outperforming proprietary competitors and improving over other standards. The EBU report also acknowledges that SBR technology (used in the aacPlus and mp3PRO submissions) is the only fundamental improvement in audio compression over the same set of tests two years earlier.
MPEG-4 HE AAC's unique ability to achieve high quality at very low bit rates not only enhances existing markets but also opens up new markets for digital audio. If bandwidth is limited, the High Efficiency AAC value is increased. This not only improves audio services but also video services such as digital television. When HE AAC is connected to MPEG-4 video, more bits may be allocated to the video signal without affecting the audio quality... This applies to mono, stereo and multichannel applications. Combined with the new and improved MPEG / ITU video coding standard (included in MPEG-4 as part 10), even higher quality improvements are possible.
Expectations for mobile multimedia services are significant with the new 2.5G and 3G mobile networks. Video streaming and other high-speed services have been touted as ideal applications for this new infrastructure. The problem is that for most of the coverage area, these networks typically have a maximum throughput of about 144 kbps, with individual users maintaining connections around 40 kbps. Providing high quality video over this type of connection is problematic and may not meet consumer expectations.
HE AAC is well suited to address this problem by providing end-users with audio download and streaming services within the current bandwidth. 48 Kbps HE AAC offers stereo programming in CD quality and at 32 Kbps excellent stereo programming mming. These data rates, combined with the growing market for audio subscription services, provide ample business opportunities from 2003 to 2004 and beyond.
aacPlus achieved its first commercial success with XM Satellite Radio. With a certain transponder bandwidth, the aacPlus XM radio was able to offer more channels with better quality than the competing Sirius radio system, which uses Lucent's proprietary PAC codec. aacPlus was also selected by the Digital Radio Mondiale consortium as part of the standard for digital AM and shortwave radio.
This legacy has ensured the trust in high performance AAC in the world of digital satellite and cable transmission with open standards. As operators want to improve their services with more channels or higher resolution, the efficiency of HE AAC offers more options for either consolidating audio bandwidth to make room for more videos or overlaying more. audio services such as multilingual and 5.1 surround sound. Since the MPEG-2 standard is alsoExpanded to enable Spectral Range Replication (SBR), operators can use HE AAC in the context of MPEG-2 or MPEG-4 as needed.
Online video-on-demand and video-subscription services continue to grow. With these services, shared server bandwidth usage and last mile bandwidth limitations make it difficult for operators and aggregators to deliver high quality, reliable services to consumers. By halving the audio bandwidth requirement, MPEG-4 reduces both the cost and reliability of Internet content services. Since HE AAC also follows AAC as it meets rights management requirements and does not charge additional distribution fees, it helps create a safe and cost-effective tool for streaming audio and audio / video content over the Internet.
In accordance with MPEG-4 AAC, SBR technology has a direct codec licensing structure without electronic content distribution or user fees. This structure makes MPEG-4 HE AAC ideal for commercialEuropean content distribution services. The HE AAC license is in two parts, with timetables and details available from Coding Technologies for SBR object types and through licensing for AAC object types. MPEG-4 HE AAC is a proven technology that is already widely used and comes out of the box. The source code for the reference decoder will soon be available via MPEG. Source code optimized for encoders and decoders may be licensed from various vendors including Coding Technologies and Fraunhofer IIS. Binary implementations optimized for Win32,
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