7/12/2011
6/17/2011
6/28/2007
DIGITAL RADIO IN BRAZIL - IBOC IBIQUITY X DRM
Brazil is running to choose between the IBOC IBIQUITY or DRM , theses are ways to digital radio in brazil, what about they.
IBOC IBIQUITY - In band in channel from Ibiquity
DRM – Radio digital mondiale
The IBOC is very expensive and can exclude most part of little radios in 3rd world , radios must have a lot money to implant and pay the royalties every year about U$ 3.000 ( this could be less than this today) and there is no perspective to create new channels in the dial with this system, IBOC needs a large occupation and specially to OM the interference will be a big problem
the IBOC is probably champion in this round, the Brazilian government is tending adopt IBOC under pressure (Big Radios broadcastings)
But there is one chance that the two systems could be used in Brasil, this possibility was showed by the communication minister Hélio Costa and this behavior is new and I think that the society is pushing him to this decision , the two system in operation could save the governmental image, DRM could used low power radios, gov radios and educational radios.
This maters is new to me too, and if has experience in your country tell me, this blog will accept IBOC defenders and DRM defenders
What IBOC has to say to you:
In one of the most revolutionary moves since Frank Conrad introduced radio broadcasting in 1919, iBiquity Digital Corporation has created HD Radio technology to bring AM and FM radio into the digital 21st century.
This breakthrough technology allows digital radio signals to ride the same airwaves as analog AM and FM radio broadcasts, bringing crystal-clear sound from any radio station to the listening public along with new audio channels to FM and wireless data services. The HD Radio In-Band, On-Channel (IBOC) system is the only FCC-approved system for AM and FM. It provides for true, end-to-end digital broadcasting within the existing spectrum and allows with continued analog broadcasts to legacy receivers.
iBiquity’s partners include leading consumer and broadcast electronics manufacturers; semiconductor and electronic component manufacturers; automakers; retailers and wireless data service providers. Each of our partners has joined with iBiquity Digital to advance the rollout of HD Radio through the introduction of new products, services and equipment that will allow for a seamless transition to digital radio in much the same way that color television replaced black-and-white broadcasts.
iBiquity Digital has 100 employees spread across three offices in Columbia, Maryland (corporate headquarters), Warren, New Jersey, and Pontiac, Michigan.
iBiquity Digital: Transforming how consumers use, view and benefit from radio.
More choice, crystal-clear sound, new data services. Read all about it. Radio for the 21st century. iBiquity Digital is the developer and licenser of HD Radio technology, which is transforming AM and FM radio into a digital medium featuring increased programming variety, drastically improved sound quality and an array of new data services. The iBiquity Digital Press Room houses press releases, recent news coverage, fact sheets, downloadable images and PR contact information.
From: http://www.ibiquity.com/
What DRM has to say to you:
Digital Radio Mondiale (DRM) is the universal, openly standardised, digital radio system for short-wave, medium-wave and long-wave - digital radio for the radio frequencies below 30MHz. It has been endorsed by the ITU, and is standardised as ETSI ES 201 980.
DRM has near-FM sound quality plus the ease-of-use that comes from digital transmissions. The improvement over AM is immediately noticeable. DRM can be used for a range of audio content, and has the capacity to integrate text and data. This additional content can be displayed on DRM receivers to enhance the listening experience.
DRM uses the existing AM broadcast frequency bands and is designed to fit in with
the existing AM broadcast band plan, based on signals of 9 kHz or10 kHz bandwidth.
It also has modes requiring only 4.5 kHz or 5 kHz bandwidth, and modes that can take advantage of wider bandwidths - 18 kHz or 20 kHz - allowing DRM to operate alongside AM transmissions in every market of the world.
The DRM system uses COFDM (Coded Orthogonal Frequency Division Multiplex). This means that all the data, produced from the digitally encoded audio and associated data signals, is shared out for transmission across a large number of closely spaced carriers. All of these carriers are contained within the allotted transmission channel. Time interleaving is applied in order to mitigate against fading. Various parameters of the OFDM and coding can be varied to allow DRM to operate successfully in many different propagation environments - the selection of the parameters allows transmissions to be planned that find the best combination of transmit power, robustness and data capacity.
The DRM system uses MPEG 4 HE AAC v2 for mixed programming providing high quality at low data rates. In addition, CELP and HVXC coders are available to provide speech-only programming at even lower data rates.
In 2005, the DRM Consortium decided to extend the DRM system to operate in all the broadcasting bands below 120 MHz. This range includes:
• 47 MHz to 68 MHz (Band I) allocated to analogue television broadcasting;
• 65.8 MHz to 74 MHz (OIRT FM band)
• 76 MHz to 90 MHz (Japanese FM band)
• 87.5 MHz to 107.9 MHz (Band II) allocated to FM radio broadcasting.
This system extension has the internal project name DRM+. The DRM Consortium
is now preparing to test and verify the design of DRM+ prior to standardisation
as a revision to the existing DRM System specification, ETSI ES 201 980.
The tech is greeting the two systems
from: www.drm.org
I will tell you the evolution of the iboc and drm in Brazil every week
by this blog
IBOC IBIQUITY - In band in channel from Ibiquity
DRM – Radio digital mondiale
The IBOC is very expensive and can exclude most part of little radios in 3rd world , radios must have a lot money to implant and pay the royalties every year about U$ 3.000 ( this could be less than this today) and there is no perspective to create new channels in the dial with this system, IBOC needs a large occupation and specially to OM the interference will be a big problem
the IBOC is probably champion in this round, the Brazilian government is tending adopt IBOC under pressure (Big Radios broadcastings)
But there is one chance that the two systems could be used in Brasil, this possibility was showed by the communication minister Hélio Costa and this behavior is new and I think that the society is pushing him to this decision , the two system in operation could save the governmental image, DRM could used low power radios, gov radios and educational radios.
This maters is new to me too, and if has experience in your country tell me, this blog will accept IBOC defenders and DRM defenders
What IBOC has to say to you:
In one of the most revolutionary moves since Frank Conrad introduced radio broadcasting in 1919, iBiquity Digital Corporation has created HD Radio technology to bring AM and FM radio into the digital 21st century.
This breakthrough technology allows digital radio signals to ride the same airwaves as analog AM and FM radio broadcasts, bringing crystal-clear sound from any radio station to the listening public along with new audio channels to FM and wireless data services. The HD Radio In-Band, On-Channel (IBOC) system is the only FCC-approved system for AM and FM. It provides for true, end-to-end digital broadcasting within the existing spectrum and allows with continued analog broadcasts to legacy receivers.
iBiquity’s partners include leading consumer and broadcast electronics manufacturers; semiconductor and electronic component manufacturers; automakers; retailers and wireless data service providers. Each of our partners has joined with iBiquity Digital to advance the rollout of HD Radio through the introduction of new products, services and equipment that will allow for a seamless transition to digital radio in much the same way that color television replaced black-and-white broadcasts.
iBiquity Digital has 100 employees spread across three offices in Columbia, Maryland (corporate headquarters), Warren, New Jersey, and Pontiac, Michigan.
iBiquity Digital: Transforming how consumers use, view and benefit from radio.
More choice, crystal-clear sound, new data services. Read all about it. Radio for the 21st century. iBiquity Digital is the developer and licenser of HD Radio technology, which is transforming AM and FM radio into a digital medium featuring increased programming variety, drastically improved sound quality and an array of new data services. The iBiquity Digital Press Room houses press releases, recent news coverage, fact sheets, downloadable images and PR contact information.
From: http://www.ibiquity.com/
What DRM has to say to you:
Digital Radio Mondiale (DRM) is the universal, openly standardised, digital radio system for short-wave, medium-wave and long-wave - digital radio for the radio frequencies below 30MHz. It has been endorsed by the ITU, and is standardised as ETSI ES 201 980.
DRM has near-FM sound quality plus the ease-of-use that comes from digital transmissions. The improvement over AM is immediately noticeable. DRM can be used for a range of audio content, and has the capacity to integrate text and data. This additional content can be displayed on DRM receivers to enhance the listening experience.
DRM uses the existing AM broadcast frequency bands and is designed to fit in with
the existing AM broadcast band plan, based on signals of 9 kHz or10 kHz bandwidth.
It also has modes requiring only 4.5 kHz or 5 kHz bandwidth, and modes that can take advantage of wider bandwidths - 18 kHz or 20 kHz - allowing DRM to operate alongside AM transmissions in every market of the world.
The DRM system uses COFDM (Coded Orthogonal Frequency Division Multiplex). This means that all the data, produced from the digitally encoded audio and associated data signals, is shared out for transmission across a large number of closely spaced carriers. All of these carriers are contained within the allotted transmission channel. Time interleaving is applied in order to mitigate against fading. Various parameters of the OFDM and coding can be varied to allow DRM to operate successfully in many different propagation environments - the selection of the parameters allows transmissions to be planned that find the best combination of transmit power, robustness and data capacity.
The DRM system uses MPEG 4 HE AAC v2 for mixed programming providing high quality at low data rates. In addition, CELP and HVXC coders are available to provide speech-only programming at even lower data rates.
In 2005, the DRM Consortium decided to extend the DRM system to operate in all the broadcasting bands below 120 MHz. This range includes:
• 47 MHz to 68 MHz (Band I) allocated to analogue television broadcasting;
• 65.8 MHz to 74 MHz (OIRT FM band)
• 76 MHz to 90 MHz (Japanese FM band)
• 87.5 MHz to 107.9 MHz (Band II) allocated to FM radio broadcasting.
This system extension has the internal project name DRM+. The DRM Consortium
is now preparing to test and verify the design of DRM+ prior to standardisation
as a revision to the existing DRM System specification, ETSI ES 201 980.
The tech is greeting the two systems
from: www.drm.org
I will tell you the evolution of the iboc and drm in Brazil every week
by this blog
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