In article ,
Jim Lesurf wrote:
Sounds like you have a faulty NICAM decoder. I've got a Panasonic TV
which does just this - the NICAM is distorted on peaks while the FM is
clean. But none of the several other NICAM devices on the same aerial
exhibit this effect.

I also have a Panasonic TV. If I use its 'analog' (Pair of line phonos)
outputs it gives audible distortion from loud sounds from receiving
NICAM. However sounds fed in via scart also give distortion when taken
out again via the phonos. Hence I assume it may not be the decoder as
such, but poor circuits later in the TV sound system.

With mine the distortion goes when you switch to the FM sound (mono). It's
not a subtle difference. ;-) It's most noticeable on 'bright' speech which
is at high mod. Sounds rather like severe multi-path on FM.

(The TV's speakers
also produce levels of random noise you can easily hear if you put your
ear near them with the TV volume wound down to zero. Sign of a poor
power amp system as well.)

Not noticed that. But then it's in the kitchen so not really used for
serious stuff. Although it does feed into a sound system with a pair of LS
3/5As.

--
*Eat well, stay fit, die anyway

Dave Plowman London SW
To e-mail, change noise into sound.