Re: HD RADIO is no worse than DAB or DRM radio

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Article #898

#898

From: SFTV_troy
Date: Sun, 30 Sep 2007 08:55

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Earl Kiosterud wrote:
>
> I think the USB to which Tom refers is upper sideband.  Converting AM stations would mean
> they'd transmit only one set of sidebands, the upper set, reducing the bandwidth to almost
> half.  More stations could be licensed in the same band.  ...


But still have the same poor AM sound.  Digital offers an upgrade to
near-FM quality.

> As a side issue, the loss of fidelity for which AM is notorious is largely in the receivers,
> with their narrow bandwidths, resulting in audio that is rolling off pretty fast around the
> 5 KHz point.  (AM stations actually transmit a fairly high-fidelity signal.)

How high?  0-10000 hertz?  That's not as good as the 0-15000 possible
with AAC+SBR.

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From:  SFTV_troy <SFTV_troy@yahoo.com>
Newsgroups: rec.audio.tech,rec.audio.car,rec.radio.shortwave,ba.broadcast
Subject: Re: HD RADIO is no worse than DAB or DRM radio
Date: Sun, 30 Sep 2007 01:55:30 -0700
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