Anyone know why iBiquity AM radio "Hybrid Digital" sounds so bad? I
don't want to refer to it as "High Definition" because it's certainly
not.

It's has a strange distortion that sounds as if the speaker is under
water. That's not the best description but it's the only one I can
come up with.

Also, at what point does AM "Hybrid Digital" turn into AM stereo?
I've yet to hear it.

This whole HD radio thing is so bogus.

Rfburns wrote:
Anyone know why iBiquity AM radio "Hybrid Digital" sounds so bad? I
don't want to refer to it as "High Definition" because it's certainly
not.

It's has a strange distortion that sounds as if the speaker is under
water. That's not the best description but it's the only one I can
come up with.

Also, at what point does AM "Hybrid Digital" turn into AM stereo?
I've yet to hear it.

This whole HD radio thing is so bogus.


Too low a bit rate, and possible high error rate where you're listening.

They're trying to squeeze 10khz of audio into a 3 khz bitstream.

Depending on the talent of the engineering staff at the radio
station, it's generally going to sound poorer than you've been led to
expect.

Hello,

Well,if you mean the analog portion of the signal,on

AM they only go out to about 4900 hertz,which is

about like a land line phone or a 78 rpm record.

It is necessary because the total signal bandwidth

would wipe out even more nearby stations if they

ran more audio on the analog portion.

If you mean the digital part,it is because it is only

running about 24 kilobytes per second,which is not

even a poor MP3 quality.

And the digital is subject to noise,static etc. so the

receiver will default to analog often in (most) instances.

Hope this helps.....

rtc wrote:
Hello,

Well,if you mean the analog portion of the signal,on

AM they only go out to about 4900 hertz,which is

about like a land line phone or a 78 rpm record.

It is necessary because the total signal bandwidth

would wipe out even more nearby stations if they

ran more audio on the analog portion.

If you mean the digital part,it is because it is only

running about 24 kilobytes per second,which is not

even a poor MP3 quality.

And the digital is subject to noise,static etc. so the

receiver will default to analog often in (most) instances.

Hope this helps.....

24 kbps Shoutcast sounds better than AM HD.

In article ,
rtc wrote:

Hello,

Well,if you mean the analog portion of the signal,on AM they only go
out to about 4900 hertz,which is about like a land line phone or a 78
rpm record. It is necessary because the total signal bandwidth would
wipe out even more nearby stations if they ran more audio on the
analog portion. If you mean the digital part,it is because it is only
running about 24 kilobytes per second,which is not even a poor MP3
quality. And the digital is subject to noise,static etc. so the
receiver will default to analog often in (most) instances.

Hope this helps.....

I don't claim to know what most stations do for bandwidth. All I know
is that before HD and on the stations that don't have it today I can
can keep opening the IF filter wider and the high end keeps improving
out to at least 12KHz, which means at least 6KHz audio bandwidth.

--
Telamon
Ventura, California

On Jul 20, 7:24*am, Rfburns wrote:
Anyone know why iBiquity AM radio "Hybrid Digital" sounds so bad? * I
don't want to refer to it as "High Definition" because it's certainly
not.

It's has a strange distortion that sounds as if the speaker is under
water. *That's not the best description but it's the only one I can
come up with.

Also, at what point does AM "Hybrid Digital" turn into AM stereo?
I've yet to hear it.

This whole HD radio thing is so bogus.

AM HD-Radio has the Digital Broadcast portion
transmitted in Stereo {Two Channel}.

To hear it you need a HD-Radio tuned to an AM
Radio Station that is Broadcasting in IBOC.

Plus you need to be within the Digital Signal Range
where you can actually get a Steady AM HD-Radio
Signal {Solid Blue Light}

Since many/most AM/MW Radio Stations feature
so-called "Talk Radio" the only time that you may
hear 'Stereo' is during the Commercials or when the
Bumper Music is being played.

~ RHF