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DAB vs FM: the debate continues

Last post Oct 19, 2009, 6:46 PM by chebby. (16 replies)
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Posted on Jul 11, 2009, 7:56 PM

DAB vs FM: the debate continues

Excellent editorial in The Guardian today attacking the Government's decision to switch off FM radio by 2015. Read it here.

 

Editor
whathifi.com

Posted on Jul 11, 2009, 10:32 PM

277311

Re: DAB vs FM: the debate continues

Andy Clough:
Read it here.

...And then keep reading to see the most bizarre set of readers' comments you'll see this side of a five-star WHFSV Sony TV review...

Consulting Editor, What Hi-Fi? Sound and Vision / whathifi.com
Audio Editor, Gramophone

Posted on Jul 17, 2009, 7:03 PM

277357

Re: DAB vs FM: the debate continues

Both have their merits. However, digital radio signals is so patchy and the bit rate with many stations is still poor. You can tell which colour flag I'm waving. . . .Geeked
A65+, CD73T, Pro-ject X1/Clearaudio turntable, Marantz ML 2060 Tuner, MA RS6, Chord Chrysalis/Merlin Chopin & Chord carnival Silver Plus.


"....You could sell me a pink elephant."

Posted on Jul 17, 2009, 7:31 PM

277357

Re: DAB vs FM: the debate continues

Andrew Everard:

Andy Clough:
Read it here.

...And then keep reading to see the most bizarre set of readers' comments you'll see this side of a five-star WHFSV Sony TV review...



Yes, some absolute genius in there. To paraphrase: "once you switch to digital, they'll know where you live and you'll get loads of junk mail". They probably think that TV stations know exactly how many people watch their programmes (as opposed to having a small sample of people - with a box in that you press a button saying "taking a poop" on it when you nip out - and multiplying by a million).

Oh and the use of the word 'wallah', which is always a good sign.
Responsible for the techie bits. Has biased opinions.

Posted on Jul 17, 2009, 10:13 PM

279870

Re: DAB vs FM: the debate continues

Obviously got better since I posted my original response...
Consulting Editor, What Hi-Fi? Sound and Vision / whathifi.com
Audio Editor, Gramophone

Posted on Aug 01, 2009, 4:10 PM

279939

Re: DAB vs FM: the debate continues

Unfortunately, I've just found out the hard way that DAB is an absolute farce.

Literally yesterday I bought a DAB/FM tuner mistakenly thinking that Classic FM would sound better on DAB than on FM. I turned to Google to find out why this wasn't the case, and within about 20 seconds, thanks to Wikipedia, I knew. Apparently, you need at least a bitrate of 256Kbps with the mp2 format that DAB uses for transparency, yet Classic FM broadcasts at 160Kbps and Jazz FM at 128Kbps!

What's the point of building all these transmitters, and wasting money on DAB, if it's so useless there isn't even enough bandwidth to broadcast a proper signal.

Classic FM on FM sounds a lot more natural and seems to carry more emotion in the music. (To my ears anyway.) And I'm not some analogue buff; the only other source component I own is a CD player, and my Amplifier is solid state.

Cheers, Marco.
Marantz PM7001,Marantz CD6002,Marantz SD4051, Tangent DAB-200,Focal Chorus 705v,Atacama Nexus 6/Matrix Black Glass.Headbox MkII + Sennheiser HD595, Grado SR80i
Chord Silver Plus/Cobra 3/Silver Siren/Chrysalis. Tacima CS929/Isotek Premium/QED Quoduit.

Posted on Aug 01, 2009, 4:13 PM

286478

Re: DAB vs FM: the debate continues

Here's the link by the way: http://en.wikipedia.org/wiki/Digital_Audio_Broadcasting#Sound_quality
Marantz PM7001,Marantz CD6002,Marantz SD4051, Tangent DAB-200,Focal Chorus 705v,Atacama Nexus 6/Matrix Black Glass.Headbox MkII + Sennheiser HD595, Grado SR80i
Chord Silver Plus/Cobra 3/Silver Siren/Chrysalis. Tacima CS929/Isotek Premium/QED Quoduit.

Posted on Aug 05, 2009, 8:57 PM

279870

Re: DAB vs FM: the debate continues

JohnDuncan:
Andrew Everard:

Andy Clough:
Read it here.

...And then keep reading to see the most bizarre set of readers' comments you'll see this side of a five-star WHFSV Sony TV review...



Yes, some absolute genius in there. To paraphrase: "once you switch to digital, they'll know where you live and you'll get loads of junk mail". They probably think that TV stations know exactly how many people watch their programmes (as opposed to having a small sample of people - with a box in that you press a button saying "taking a poop" on it when you nip out - and multiplying by a million).

Oh and the use of the word 'wallah', which is always a good sign.

Oh my God, I didn't realise that my Pure DAB radio had a built in transmitter and mic. I must learn how to disable it before my personal info. ends up on a Government CD which is lying around on a train..

As for the debate.. I am in two minds. If I listen to a stronger broadcast like Radio 1 then things sound good enough to me, but if I start scrolling then other not so wholesome sounding stations are found, with lower bitrates, which ain't good news. I knew where I was at least with FM as most stations on the dial sounded great and lively.

I guess there is some way to go before the deadline in 2015, and just hope they all sort it out in time.

Ex-Record Producer (15 years) & Mastering Engineer
Audiophile, but not Audio-Nutter. I have my ears tested annually for my job (mastering audio), to check reception and frequency detection.

Posted on Aug 20, 2009, 7:06 PM

286478

Re: DAB vs FM: the debate continues

The daft thing is that they broadcast digital radio at better quality on Freeview than DAB.  Of course there are fewer stations to choose from but to my knowledge they are all broadcast as 192k MP2 streams (see http://www.digitalradiotech.co.uk/digital_radio_samples.htm).  The BBC channels actually sound very good through my Humax feeding my DAC
Mac Mini + iTunes + Apple Lossless ripped CDs; Beresford TC-7520 USB DAC; Behringer A500; PMC TB2i's;
Humax 9200T hooked into DAC via SPDIF;
No money wasted on fancy interconnects or cables!

Posted on Oct 06, 2009, 11:55 AM

294538

Re: DAB vs FM: the debate continues

How good is internet radio today?  (The only station I ever listen to is R5, when I'm in the car and don't fancy any music.)

I'd have thought that's the future, maybe with analogue radio as a backup. Come to an agreement with the cellphone providers to supply basic services FOC, a "radio set" would a sim-less cellphone receiver, perhaps more upmarket sets would have improved bitrates if you pay a bit as a option, and utilise wifi and static BB. Infrastructures all there.

Problem with DAB is I don't think most radio listeners care enough for any improvement.  95+% of the general population want generic background noise. It's not like freeview where most people like the idea of more stations.  hifi enthusiast's and tech heads alone can't support the platform, it must be embraced by the masses, and right now it doesn't offer them anything.

Posted on Oct 18, 2009, 2:21 AM

314287

Re: DAB vs FM: the debate continues

DAB works fine in my Yamaha Receiver until I walk out into the Conservatory where the signal breaks up, and the sound is then awful.  I find 76% signal strength is fine and anything less results in interference.  I have a suspicion that weather also has an effect that really does surprise me as I thought DAB would be better than FM with reference to this.


Hearing this properly in a Gym at work, there is always an delay of maybe a second before it catches up eventually with the FM equivalent that is definately annoying.

Panasonic 37LZD85 TV, Panasonic BD30 Player,
Yamaha YSP-30D, YST-FSW100PB Sub Woofer, YSD-11
Dock, Sky HD Box, Wii Console, Kenmark Stand.
Son has B&W Zeppelin, Daughter has KEF Picoforte, Wife has iPOD Touch awaiting Sonos expansion.....

Posted on Oct 18, 2009, 11:01 AM

319426

Re: DAB vs FM: the debate continues

FM is 'better' in this respect because a weaker signal is often still perfectly listenable and degrades more 'gracefully' - whereas DAB justs hits a 'brick wall' when signal strength drops below a certain threshold. 

Two possible solutions...

A professionally installed DAB roof aerial. (A diagonally oriented 1.5m half-length dipole will do both FM and DAB well -  if you live in a good reception area - or just get a dedicated DAB 'folded-dipole' aerial if you don't want FM.)

Or...

Use the radio channels from your Skybox as the quality and bitrates are better than DAB. (Assuming the stations you listen to are on it.)

 

Rega P2 • Ortofon 2M Blue • Rega Fono Mini • Naim Nait 5i • Naim CD5i • Naim NAT 05 FM tuner • Rega R3 loudspeakers • Naim NAC-A5 speaker cable • Beresford TC7520 • Panasonic DMR-EX78 DVD/HDD • Chord Chrysalis, Crimson & Naim interconnects

Posted on Oct 18, 2009, 9:14 PM

319496

Re: DAB vs FM: the debate continues

Is there a definitive date when the UK will upgrade to DAB+?

Posted on Oct 19, 2009, 10:54 AM

319764

Re: DAB vs FM: the debate continues

getdownmonkeyman:
Is there a definitive date when the UK will upgrade to DAB+?

There is no announced intention at all to upgrade to DAB+ in the UK.


Rega P2 • Ortofon 2M Blue • Rega Fono Mini • Naim Nait 5i • Naim CD5i • Naim NAT 05 FM tuner • Rega R3 loudspeakers • Naim NAC-A5 speaker cable • Beresford TC7520 • Panasonic DMR-EX78 DVD/HDD • Chord Chrysalis, Crimson & Naim interconnects

Posted on Oct 19, 2009, 4:10 PM

319909

Re: DAB vs FM: the debate continues

Thanks Chebby, now that my external TV aerial is redundant I may as well replace it with a DAB/FM Aerial next year.  Any ideas ref price/manufacturer?
Panasonic 37LZD85 TV, Panasonic BD30 Player,
Yamaha YSP-30D, YST-FSW100PB Sub Woofer, YSD-11
Dock, Sky HD Box, Wii Console, Kenmark Stand.
Son has B&W Zeppelin, Daughter has KEF Picoforte, Wife has iPOD Touch awaiting Sonos expansion.....
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