BBC iMP Trial to start 1st September

"DAB sounds worse than FM" schreef in bericht
...
It was after the iPod Shuffle came out that I read that more people buy
small capacity than large capacity MP3 players. When you think about it
it's not surprising because of the massive price difference.

Yes, the larger capacity ones have discs, the smaller ones are solid state.
Just like those USB keys, the 128/256MB. ones are really cheap.

gr, hwh

Ivan wrote:

IIRC the author was Barry Fox :0)


Oh, him... I'm not his biggest fan ever.


Thanks for the detailed explanation Steve, I'm now a little more up
to speed about what's going on, as I have to admit that my only
awareness of DRM was that I vaguely knew that there was some kind of
digital rejuvenation on the cards for the AM radio spectrum.

It seems a shame that DRM won't be taking off in the UK sooner rather
than later, especially if the signal is more robust than DAB and
offers better quality, plus the choice of many more stations.



We'll likely see radios with DAB+DRM, but they'll only be able to
receive signals below 30 MHz. It'll be interesting to see whether in a
few years' time once DRM has been extended that this rules out the UK
from receiving the higher frequency DRM channels thus consigning the UK
to an absolutely appalling overall digital radio system.


--
Steve - www.digitalradiotech.co.uk - Digital Radio News & Info

Find the cheapest Freeview, DAB & MP3 Player Prices:
http://www.digitalradiotech.co.uk/fr..._receivers.htm
http://www.digitalradiotech.co.uk/da...tal_radios.htm
http://www.digitalradiotech.co.uk/mp...rs_1GB-5GB.htm
http://www.digitalradiotech.co.uk/mp...e_capacity.htm

DAB sounds worse than FM a écrit :

We'll likely see radios with DAB+DRM, but they'll only be able to
receive signals below 30 MHz. It'll be interesting to see whether in a
few years' time once DRM has been extended that this rules out the UK
from receiving the higher frequency DRM channels thus consigning the UK
to an absolutely appalling overall digital radio system.

But we can't digitalize FM band without stop some FM radio.
And it need some years before DRM+ is ready.

So because, UK choice DAB, it will be the transition system before come
back digital FM band.

Pierre PANTALÉON wrote:
DAB sounds worse than FM a écrit :

We'll likely see radios with DAB+DRM, but they'll only be able to
receive signals below 30 MHz. It'll be interesting to see whether in
a few years' time once DRM has been extended that this rules out the
UK from receiving the higher frequency DRM channels thus consigning
the UK to an absolutely appalling overall digital radio system.

But we can't digitalize FM band without stop some FM radio.


Stop FM radio? How dare you say that! ;-)


And it need some years before DRM+ is ready.


DRM+ could be ready within 18 months if they wanted to make it ready.
What do they need to do exactly? They have to decide on possible changes
to an already designed system, then simulate those changes, then
validate those changes. It's not like they're designing a system from
nothing.


So because, UK choice DAB, it will be the transition system before
come back digital FM band.


They'd better sort the audio quality out before they even consider
switching FM off.


--
Steve - www.digitalradiotech.co.uk - Digital Radio News & Info

Find the cheapest Freeview, DAB & MP3 Player Prices:
http://www.digitalradiotech.co.uk/fr..._receivers.htm
http://www.digitalradiotech.co.uk/da...tal_radios.htm
http://www.digitalradiotech.co.uk/mp...rs_1GB-5GB.htm
http://www.digitalradiotech.co.uk/mp...e_capacity.htm

"DAB sounds worse than FM" wrote in message
...
Pierre PANTALÉON wrote:
DAB sounds worse than FM a écrit :

We'll likely see radios with DAB+DRM, but they'll only be able to
receive signals below 30 MHz. It'll be interesting to see whether in
a few years' time once DRM has been extended that this rules out the
UK from receiving the higher frequency DRM channels thus consigning
the UK to an absolutely appalling overall digital radio system.

But we can't digitalize FM band without stop some FM radio.


Stop FM radio? How dare you say that! ;-)


And it need some years before DRM+ is ready.


DRM+ could be ready within 18 months if they wanted to make it ready.
What do they need to do exactly? They have to decide on possible changes
to an already designed system, then simulate those changes, then
validate those changes. It's not like they're designing a system from
nothing.


True, browsing around on the net I've read that.. "Texas instruments can
supply the RS500, which supplies all the necessary hardware and software to
design and build receivers able to support any combination of DRM, DAB,
FM-RDS and AM, cutting down significantly on the development time and
resources needed from the manufacturer".

"Pricing for both the DRM300 and DRM350 chips starts at $18 in sample
quantities of 1000 or less and are expected to be available in Q3 2005."
Then let the roll-out commence!










So because, UK choice DAB, it will be the transition system before
come back digital FM band.


They'd better sort the audio quality out before they even consider
switching FM off.


--
Steve - www.digitalradiotech.co.uk - Digital Radio News & Info

Find the cheapest Freeview, DAB & MP3 Player Prices:
http://www.digitalradiotech.co.uk/fr..._receivers.htm
http://www.digitalradiotech.co.uk/da...tal_radios.htm
http://www.digitalradiotech.co.uk/mp...rs_1GB-5GB.htm
http://www.digitalradiotech.co.uk/mp...e_capacity.htm

Ivan wrote:
"DAB sounds worse than FM" wrote in message
...
Pierre PANTALÉON wrote:
DAB sounds worse than FM a écrit :

We'll likely see radios with DAB+DRM, but they'll only be able to
receive signals below 30 MHz. It'll be interesting to see whether
in a few years' time once DRM has been extended that this rules
out the UK from receiving the higher frequency DRM channels thus
consigning the UK to an absolutely appalling overall digital radio
system.

But we can't digitalize FM band without stop some FM radio.


Stop FM radio? How dare you say that! ;-)


And it need some years before DRM+ is ready.


DRM+ could be ready within 18 months if they wanted to make it ready.
What do they need to do exactly? They have to decide on possible
changes to an already designed system, then simulate those changes,
then validate those changes. It's not like they're designing a
system from nothing.


True, browsing around on the net I've read that.. "Texas instruments
can supply the RS500, which supplies all the necessary hardware and
software to design and build receivers able to support any
combination of DRM, DAB, FM-RDS and AM, cutting down significantly on
the development time and resources needed from the manufacturer".

"Pricing for both the DRM300 and DRM350 chips starts at $18 in sample
quantities of 1000 or less and are expected to be available in Q3
2005." Then let the roll-out commence!


Yes, but this is still the 30 MHz version of DRM, not the version
that'll be able to handle 120 MHz and below.



--
Steve - www.digitalradiotech.co.uk - Digital Radio News & Info

Find the cheapest Freeview, DAB & MP3 Player Prices:
http://www.digitalradiotech.co.uk/fr..._receivers.htm
http://www.digitalradiotech.co.uk/da...tal_radios.htm
http://www.digitalradiotech.co.uk/mp...rs_1GB-5GB.htm
http://www.digitalradiotech.co.uk/mp...e_capacity.htm

DAB sounds worse than FM a écrit :

Stop FM radio? How dare you say that! ;-)

Because, we need FM spectrum for DRM+ !
It's true, it exist iBOC


DRM+ could be ready within 18 months if they wanted to make it ready.
What do they need to do exactly? They have to decide on possible changes
to an already designed system, then simulate those changes, then
validate those changes. It's not like they're designing a system from
nothing.

Short time to develop DRM+, but to improve new changes in real life it's
another thing.

So because, UK choice DAB, it will be the transition system before
come back digital FM band.



They'd better sort the audio quality out before they even consider
switching FM off.

perhaps, but simulcast seems impossible, we need spectrum with
transition system.

Pierre PANTALÉON wrote:
DAB sounds worse than FM a écrit :

Stop FM radio? How dare you say that! ;-)

Because, we need FM spectrum for DRM+ !
It's true, it exist iBOC


DRM is not IBOC.


DRM+ could be ready within 18 months if they wanted to make it ready.
What do they need to do exactly? They have to decide on possible
changes to an already designed system, then simulate those changes,
then validate those changes. It's not like they're designing a
system from nothing.

Short time to develop DRM+, but to improve new changes in real life
it's another thing.


DRM has a completed specification. The audio codec won't change. The
fact it uses OFDM and QPSK, 16-QAM and 64-QAM won't change. The vast
majority of the spec won't change, and it's predominantly just being
extended and the extensions required to work at higher frequencies are
not difficult to define, because they're simple transmission parameters
that are easily arrived at from experience of DAB, DVB-T/H etc.

3 years is too long for these changes, let alone 5 years.

Anyway, someone from teh DRM consortium has admitted that it's DAB
broadcasters that are employing delaying tactics so that DRM doesn't
compete with DAB. Pathetic.


So because, UK choice DAB, it will be the transition system before
come back digital FM band.



They'd better sort the audio quality out before they even consider
switching FM off.

perhaps, but simulcast seems impossible, we need spectrum with
transition system.


Given the BBC's and Ofcom's love of farcical digital radio
implementation then they'll probably replace FM in-band. Now that would
be utterly farcical, but I wouldn't put it past the freaks.


--
Steve - www.digitalradiotech.co.uk - Digital Radio News & Info

Find the cheapest Freeview, DAB & MP3 Player Prices:
http://www.digitalradiotech.co.uk/fr..._receivers.htm
http://www.digitalradiotech.co.uk/da...tal_radios.htm
http://www.digitalradiotech.co.uk/mp...rs_1GB-5GB.htm
http://www.digitalradiotech.co.uk/mp...e_capacity.htm

DAB sounds worse than FM wrote:

DRM has a completed specification. The audio codec won't change. The
fact it uses OFDM and QPSK, 16-QAM and 64-QAM won't change. The vast
majority of the spec won't change, and it's predominantly just being
extended and the extensions required to work at higher frequencies
are not difficult to define, because they're simple transmission
parameters that are easily arrived at from experience of DAB, DVB-T/H
etc.

3 years is too long for these changes, let alone 5 years.

Anyway, someone from teh DRM consortium has admitted that it's DAB
broadcasters that are employing delaying tactics so that DRM doesn't
compete with DAB. Pathetic.


Does that apply to the BBC World Service which has nothing to benefit
from DAB ?

Remember the BBC W/S is paid for by the F&CO and not the licence fee
and I would have thought the F&CO would have been very positive about
DRM.

J

John wrote:
DAB sounds worse than FM wrote:

DRM has a completed specification. The audio codec won't change. The
fact it uses OFDM and QPSK, 16-QAM and 64-QAM won't change. The vast
majority of the spec won't change, and it's predominantly just being
extended and the extensions required to work at higher frequencies
are not difficult to define, because they're simple transmission
parameters that are easily arrived at from experience of DAB, DVB-T/H
etc.

3 years is too long for these changes, let alone 5 years.

Anyway, someone from teh DRM consortium has admitted that it's DAB
broadcasters that are employing delaying tactics so that DRM doesn't
compete with DAB. Pathetic.


Does that apply to the BBC World Service which has nothing to benefit
from DAB ?

Remember the BBC W/S is paid for by the F&CO and not the licence fee
and I would have thought the F&CO would have been very positive about
DRM.


The companies that want to delay DRM are the ones that support DAB and
don't want any competition for DAB. So, from the list of DRM members:

http://www.drm.org/members/members.php

the organisations that are in the DRM consortium, or are associate
members, that support DAB a

BBC
IRT
EBU (full of ex-BBC people)


--
Steve - www.digitalradiotech.co.uk - Digital Radio News & Info

Find the cheapest Freeview, DAB & MP3 Player Prices:
http://www.digitalradiotech.co.uk/fr..._receivers.htm
http://www.digitalradiotech.co.uk/da...tal_radios.htm
http://www.digitalradiotech.co.uk/mp...rs_1GB-5GB.htm
http://www.digitalradiotech.co.uk/mp...e_capacity.htm