On 25/08/2023 13:01, Brian Gaff wrote:

> I'm seeing a lot of the stations on Freeview dedicated to radio moving from
> Stereo to Mono. Even Classic FM has done it now, which in my view negates
> the point of having it on there, they are also going DAB plus on that band.
> I was wondering if we are in fact seeing the beginning of the end for Radio
> on this platform? Just how much more bandwidth would they get from chucking
> radio off though? Brian

Does it really use so much more bandwidth to transmit in stereo as mono?
It won't be twice as much, as you only need the mono plus the difference
between the channels - I think it's called "joint stereo".

--
Max Demian

On Sun, 27 Aug 2023 21:00:16 +0100, Brian Gregory
<void-invalid-dead-dontuse@email.invalid> wrote:

>In case anyone doesn't realise. It's not just mono, it's bad sounding
>low bit rate mono.

Is it MP2 - same as DAB?

On 29/08/2023 17:40, Scott wrote:
> On Sun, 27 Aug 2023 21:00:16 +0100, Brian Gregory
> <void-invalid-dead-dontuse@email.invalid> wrote:
>
>> In case anyone doesn't realise. It's not just mono, it's bad sounding
>> low bit rate mono.
>
> Is it MP2 - same as DAB?

I believe so. I guess the Media Info program I used on the recording I
made could be wrong.

Also, if it is something more advanced like AAC, then there would surely
be some non HD TVs that couldn't play it.

--
Brian Gregory (in England).

On Tue, 29 Aug 2023 18:13:32 +0100, Brian Gregory
<void-invalid-dead-dontuse@email.invalid> wrote:

>On 29/08/2023 17:40, Scott wrote:
>> On Sun, 27 Aug 2023 21:00:16 +0100, Brian Gregory
>> <void-invalid-dead-dontuse@email.invalid> wrote:
>>
>>> In case anyone doesn't realise. It's not just mono, it's bad sounding
>>> low bit rate mono.
>>
>> Is it MP2 - same as DAB?
>
>I believe so. I guess the Media Info program I used on the recording I
>made could be wrong.
>
>Also, if it is something more advanced like AAC, then there would surely
>be some non HD TVs that couldn't play it.

I thought Freeview sound was MP3 (except HD).

On Tue 29/08/2023 18:13, Brian Gregory wrote:
> On 29/08/2023 17:40, Scott wrote:
>> On Sun, 27 Aug 2023 21:00:16 +0100, Brian Gregory
>> <void-invalid-dead-dontuse@email.invalid> wrote:
>>
>>> In case anyone doesn't realise. It's not just mono, it's bad sounding
>>> low bit rate mono.
>>
>> Is it MP2 - same as DAB?
>
> I believe so. I guess the Media Info program I used on the recording I
> made could be wrong.
>
> Also, if it is something more advanced like AAC, then there would surely
> be some non HD TVs that couldn't play it.
>

DAB is mp2
DAB+ is AAC (or was it AAC+?)

On 29/08/2023 18:16, Scott wrote:
> I thought Freeview sound was MP3 (except HD).

No. MP2.

--
Brian Gregory (in England).

On 29/08/2023 19:02, Woody wrote:
> DAB+ is AAC (or was it AAC+?)
AFAIK both are supported on DAB+.

--
Brian Gregory (in England).

On Tue, 29 Aug 2023 19:20:39 +0100, Brian Gregory
<void-invalid-dead-dontuse@email.invalid> wrote:

>On 29/08/2023 18:16, Scott wrote:
>> I thought Freeview sound was MP3 (except HD).
>
>No. MP2.

This makes sense given the date of commencement of ONdigital.

"Brian Gaff" <brian1gaff@gmail.com> wrote in message
news:uccir1$hhk3$1@dont-email.me...
> But they don't do that.
> I feel sure that Classic FM on freeview is mono, and the person who says
> it s not has not listened recently. Of course it might be an outage in
> some of the distribution system where Classic has automatically switched
> to mono and nobody bothers to check it.

I have just listened to Classic FM on Freeview (Belmont transmitter) and on
Freesat. Freeview is mono (and the stream details say mono) whereas Freesat
is stereo (and the stream says stereo).

It is a shame, because Freeview/Freesat is the easiest way of scheduling a
recording of a radio programme using the same technology and PVR as for TV.

On 29/08/2023 14:41, Max Demian wrote:
>
> Does it really use so much more bandwidth to transmit in stereo as mono?
> It won't be twice as much, as you only need the mono plus the difference
> between the channels - I think it's called "joint stereo".

Well... it depends. I think usually about 50% extra will give you the
second channel - usually 64kb mono going to 96 joint stereo.

But it's all subjective.

Andy

On 30/08/2023 12:15, NY wrote:
> I have just listened to Classic FM on Freeview (Belmont transmitter) and
> on Freesat. Freeview is mono (and the stream details say mono) whereas
> Freesat is stereo (and the stream says stereo).

Yes on satellite, Classic FM is 192kb/s stereo which is adequate quality.

--
Brian Gregory (in England).

Well do not know but if they use lossy compression for mp3 then its pretty
dire to use a matrix system with incomplete audio, you get phase errors and
a kind of swizzling sound like a stretched cassette tape.
Brian

--

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"Max Demian" <max_demian@bigfoot.com> wrote in message
news:ucksiq$29aa7$1@dont-email.me...
> On 25/08/2023 13:01, Brian Gaff wrote:
>
>> I'm seeing a lot of the stations on Freeview dedicated to radio moving
>> from
>> Stereo to Mono. Even Classic FM has done it now, which in my view negates
>> the point of having it on there, they are also going DAB plus on that
>> band.
>> I was wondering if we are in fact seeing the beginning of the end for
>> Radio
>> on this platform? Just how much more bandwidth would they get from
>> chucking
>> radio off though? Brian
>
> Does it really use so much more bandwidth to transmit in stereo as mono?
> It won't be twice as much, as you only need the mono plus the difference
> between the channels - I think it's called "joint stereo".
>
> --
> Max Demian
>