[opendtv] Re: Digital radios outstrip analogue

  • From: Mitch Cardwell <mitchrc@xxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Tue, 1 Mar 2005 14:30:13 -0800

Because Craig you keep thinking that we can shut off one system and  
fire up another with no transition. At least the radio transition  
doesn't take any additional spectrum.

Mitch


On Mar 1, 2005, at 2:18 PM, Craig Birkmaier wrote:

> Can someone please remind me again why we need separate digital TV
> and radio services.
>
> It's called digital broadcasting, and smart receivers will be able to
> tune to any source of bits.
>
> Why segregate these services and the devices that use them?
>
> I understand potential differences in robustness requirements. But
> well designed digital broadcast systems already have the ability to
> optimize portions of the network for services with different
> application requirements.
>
> Except for here in the U.S. of course...
>
> Regards
> Craig
>
>
>
>
> At 12:19 PM -0500 3/1/05, dmenolan wrote:
>> Hi Jeroen,
>>
>> I agree but there a) people who don't like the current bit rate at  
>> which =
>> the services are run (between 128 and 192kb/s) b) although you see  
>> lots o=
>> f DAB portables you never see a battery operated DAB radio c)  
>> although lo=
>> ts of people do have excellent indoor antenna reception on a  
>> telescopic r=
>> od, they generally reckon the current low power VHF Band III signals  
>> shou=
>> ld be up to 9dB higher. Set against that my analogue FM is crap and  
>> the D=
>> AB versions of the same stations are flawless: domestic harmony in  
>> the mo=
>> rnings. d) Its very clear why it is a success: same business model as  
>> Fre=
>> eview. New digital only stations, simulcast of existing services, no  
>> subs=
>> cription and under =A399.
>> Heretically if you were starting digital radio today you would NOT  
>> use Eu=
>> reka 147: you would and some countries are planning to, use DVB-H as  
>> its =
>> 6.8 times more efficient than DAB (spectrum occupancy+audio coding)  
>> and t=
>> here will be scale economies from simultaneous deployment of DVB-H in  
>> cel=
>> lular systems. Of course it too uses that notorious but highly  
>> industrial=
>> ised and effective multicarrier system!!
>> And, of course, DVB-H is probably better suited for battery operated  
>> digi=
>> tal radios...
>> Kind Regards,
>>
>> Dermot Nolan
>>
>> -------------Forwarded Message-----------------
>>
>> From:        INTERNET:opendtv@xxxxxxxxxxxxx, INTERNET:opendtv@xxxxxxxxxxxxx
>> To:  , INTERNET:opendtv@xxxxxxxxxxxxx
>>      =
>>
>> Date:        01/03/105 15:43 PM
>>
>> RE:  [opendtv] Digital radios outstrip analogue
>>
>>  =
>>
>> Hi, =
>>
>>
>> See: http://news.bbc.co.uk/2/hi/uk_news/4302459.stm
>>
>> "Sales of digital radios have outstripped the demand for traditional  
>> sets=
>>  =
>>
>> for the first time"
>> "In total more radios are currently being sold in Dixons than in  
>> 1985." =
>>
>> "A century after Marconi's invention, the loud and clear message is  
>> that =
>>
>> radio is still a popular format. =
>>
>>
>>
>> Shows you what a multi carrier transmission system can do...  ;-) =
>>
>>
>> Greetings, =
>>
>> -- Jeroen =
>>
>>
>> +------------------------------- 
>> +----------------------------------------=
>> --+
>> | From:     Jeroen H. Stessen   | E-mail:  Jeroen.Stessen@xxxxxxxxxxx  
>> |
>> | Building: SFJ-5.22 Eindhoven  | Deptmt.: Philips Applied  
>> Technologies |=
>>
>> | Phone:    ++31.40.2732739     | Visiting & mail address: Glaslaan 2  
>> |
>> | Mobile:   ++31.6.44680021     | NL 5616 LW Eindhoven, the  
>> Netherlands |=
>>
>> | Pager:    ++31.6.65133818     | Website:  
>> http://www.apptech.philips.com=
>> / =
>>
>> |
>> +------------------------------- 
>> +----------------------------------------=
>> --+
>>
>>
>>  =
>>
>>  =
>>
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