[BC] While you are waiting for receivers

[Kevin Tekel]

Paul Smith wrote:
> And to think one of the big flaws in AM Stereo (CQuam) was the stereo
> kicking back to mono over and over again, especially at night or even
> some critical hours. As Yogi said:  Deja Vu all over again

Motorola solved the problem of abrupt switching between stereo and mono by
incorporating a gradual stereo blend (much like that of most FM Stereo
tuners), and also eliminated the necessity of offering a manual bandwidth
switch by using an automatically variable IF and audio bandwidth,
depending on incoming signal strength and reception conditions.  I
wouldn't be surprised if future IBOC receiver designs include similar
tricks to help make the transition between ~15 kHz digital AM audio and ~3
kHz analog AM audio less obtrusive.

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