Earl Kiosterud wrote:

The frequency response sounds like that of FM, but it
has that swishy sound of compressed audio.


That's a fair assessment. I find it comparable to the constant
background "hiss" that plagues FM.

I guess it's a good thing AM-HD stations broadcast at 40 kbps then.

jhardis wrote:
On Sep 30, 5:11 pm, SFTV_troy wrote:
HE-ACC + SBR is the codec used in Hybrid Digital Radio, Digital Radio
Mondiale, and DAB+.

1) The ACC is an athletic conference within the NCAA. You mean AAC.

The "AAC girls" was Playboy's best issue.

;-)



2) There is no such thing as "Hybrid Digital" radio. HD Radio is
a trademark of iBiquity Digital Corp for their IBOC implementation,
and the "HD" doesn't mean anything in particular.

False. Go look it up on wikipedia, and you will see a link to an
email from the HD Alliance. That email confirms that HD means Hybrid
Digital.



3) "HD Radio" uses a codec known as HDC (a.k.a. "HD Codec"). While
iBiquity has acknowledged that it uses SBR, they have pointedly
declined to discuss whether or not it has any other similarity to HE-
AAC. I doubt that you could cite an authoritative source, but if you
could I would love to know about it.


(1) Wikipedia states it is AAC.

(2) Even if wiki is wrong, you find that SBR codecs are the most-
advanced. Take MP3pro for example, which is essentially MP3 + SBR.
It routinely ties with AAC+SBR in listening tests.

(3) iBiquity has already stated it is "based on MPEG4", the most-
advanced standard currently available for audio compression.

So to summarize: We know definitely that it's MPEG4 with SBR. We know
wikipedia states it is based upon AAC. It's safe to make an educated
guess that HDC == MPEG4 AAC+SBR, or a derivation thereof.

On Sun, 30 Sep 2007 20:59:12 -0700, jhardis
wrote:

2) There is no such thing as "Hybrid Digital" radio. "HD Radio" is a
trademark of iBiquity Digital Corp for their IBOC implementation, and
the "HD" doesn't mean anything in particular. IBOC has three modes of
operation: hybrid, extended hybrid, and all digital. All three are
part of "HD Radio."

iNiquity wants to piggy-back on the gullible public's awareness that
HDTV means "high definition TV".

We b/c engineers know that HD Radio means High Distortion Radio.
--
Phil Kane
Beaverton, OR

wrote:


Telamon wrote:

Been there, done that Mr. Tin ear.

Actually I just had my ears tested, and I still have high frequency
response up to 18,000 hertz. I doubt a man of your advance age
(somewhere around 55?), can say the same.


But can you recognize music? Any concept of tone?

I'd trust Dave Brubeck's ancient ears over mine and mine over yours.

Tin ear.

In article . com,
wrote:

Telamon wrote:

Been there, done that Mr. Tin ear.

Actually I just had my ears tested, and I still have high frequency
response up to 18,000 hertz. I doubt a man of your advance age
(somewhere around 55?), can say the same.

You have no idea how old I am.

If you bothered to TRY those stations, instead of being a close-minded
old grandpa, you'd probably be surprised how good they sound.

Oh well.

I have actually listened to several radios and have experimented with
different bandwidths, which is something you haven't done but I noticed
being ignorant doesn't slow you down a bit.

Sorry to get a little technical with you as I realize you are a pretend
digital engineer.

Be a hard-headed, calcified old fart, who is so set in his ways, he's
like a marble statue.

The problem for you is that you have a tin ear for life. Young or old
you will never know what sounds good.

--
Telamon
Ventura, California

Eric F. Richards wrote:
wrote:


Telamon wrote:

Been there, done that Mr. Tin ear.

Actually I just had my ears tested, and I still have high frequency
response up to 18,000 hertz. I doubt a man of your advance age
(somewhere around 55?), can say the same.


But can you recognize music? Any concept of tone?


Yes I know what's music, thank you very much. I bet you were a lot
more open-minded when you were in your twenties. (And your parents
probably wondered why you listened to that Big Band and Jazz stuff,
and thought you had poor taste.)

Now you've turned into them.

Close-minded.

Telamon wrote:
wrote:
Telamon wrote:

Been there, done that Mr. Tin ear.

If you bothered to TRY those stations, instead of being a close-minded
old grandpa, you'd probably be surprised how good they sound.

I have actually listened to several radios and have
experimented with different bandwidths....



So NO you didn't bother to listen to the HE-AAC encodings, and have no
clue how they sound. Thanks for clarifying that. ----- You should
not judge something of which you've never heard. That's like saying
"chocolate ice cream tastes bad" when you've never even tried any.

I bet you were a lot cooler person in your 20's. More open-minded.
But now you've lost that - you've turned into a close-minded,
arrogant, and rude man ("Troy has a tin ear").

What would your mother think if she saw how you talk to others?

Silence. I guess you don't want to admit you were wrong, huh J
Hardis?



On Oct 1, 8:58 am, wrote:
jhardis wrote:

There is no such thing as "Hybrid Digital" radio. HD Radio is a
trademark of iBiquity Digital Corp for their IBOC implementation,
and the "HD" doesn't mean anything in particular.

False. Go look it up on wikipedia and you will see a link to an
email from the HD Alliance. That email confirms that HD
means Hybrid Digital.

wrote:


Eric F. Richards wrote:
wrote:


Telamon wrote:

Been there, done that Mr. Tin ear.

Actually I just had my ears tested, and I still have high frequency
response up to 18,000 hertz. I doubt a man of your advance age
(somewhere around 55?), can say the same.


But can you recognize music? Any concept of tone?


Yes I know what's music, thank you very much. I bet you were a lot
more open-minded when you were in your twenties.

Actually, I wasn't. I would suffer fools more than, but not now.

(And your parents
probably wondered why you listened to that Big Band and Jazz stuff,
and thought you had poor taste.)

Now you've turned into them.



My parents had great taste in music that spanned genres and eras --
you could find Bach and B-52s in their collection.

Thank you for the kind complement! They were some of the most
open-minded people out there.

Now why don't you go out and continue ****ing off some of the most
premier engineers in this field? You're doing wonders for your future
employability.

--
Eric F. Richards,
"It's the Din of iBiquity." -- Frank Dresser

On 2007-10-02 07:11:40 -0700, David said:

"HD Radio" is a
trademark of iBiquity Digital Corp for their IBOC implementation, and
the "HD" doesn't mean anything in particular.

Image
http://img.photobucket.com/albums/v390/peterh5322/HD_Radio_Mark.jpg

Word Mark HD RADIO

Disclaimer NO CLAIM IS MADE TO THE EXCLUSIVE RIGHT TO USE "HD" and "
RADIO" APART FROM THE MARK AS SHOWN