David Eduardo wrote:
It has audio that sounds like a CD, not FM analog, with the difference being
that anaalog FM is "colored" by the preemphasis curve.

A:B comparison of HD and a CD is nearly indistinguishable, but with Analog
FM it shows coloring.

It should not. There is supposed to be anequivalent deemphasis in the
receiver. However many FM stations use audio level compression and
increased trebble or bass to "improve" their signal and it's ability to
be heard in a car or with headphones.

You will also see the "coloring" if you use a receiver made for the U.S.
in Europe (and possibly elsewhere). The preempahsis is different.

When asked if U.S. FM receivers will work here, I mention the voltage
and channel spacing difference. Unless someone has good ears or really
cares how their radio sounds, it may have a slight "coloring" but they
won't notice.


Geoff.

--
Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM
IL Voice: (07)-7424-1667 U.S. Voice: 1-215-821-1838
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"Geoffrey S. Mendelson" wrote in message
...
David Eduardo wrote:
It has audio that sounds like a CD, not FM analog, with the difference
being
that anaalog FM is "colored" by the preemphasis curve.

A:B comparison of HD and a CD is nearly indistinguishable, but with
Analog
FM it shows coloring.

It should not. There is supposed to be anequivalent deemphasis in the
receiver. However many FM stations use audio level compression and
increased trebble or bass to "improve" their signal and it's ability to
be heard in a car or with headphones.

Not only that, the preemphasis changes where the noise floor is...
processing can definitely color the analog audio, and most stations process
HD differently and less.

You will also see the "coloring" if you use a receiver made for the U.S.
in Europe (and possibly elsewhere). The preempahsis is different.