Close to -60db s/n is not bad for current consumer
camcorders, though it is considerably noisier than
the 48kHz 16-bit medium would allow. I remember when
-60db s/n was considered very good for home audio with
a magnetic cartridge used to play "records" (those
big black things that spun while we listened to
music...;-). Also, with film and an optical sound track,
I have real doubts that the s/n even began to approach
-60db s/n before the days of Dolby - yet very few
complained of the relatively high noise level...
Times change, and standards change, but asking *now*
for s/n ratios that are generally un-needed, and until
recently, not offered (or even nearly impossible to
offer at a reasonable price) or complaining now about
test results that are normal for current gear may not
be reasonable - though we *can* pressure manufacturers
to offer better performance in future models...
DR

On Tue, 9 Jul 2002 03:37:45 -0400, "j j" wrote:
>
>thanks for your help.
>I checked the RMS. it showed -59db and the graph pattern is almost same.
>but mine is done with a mic. hooked up. it reduced the noise a lot in my
>ears.
>would you test it with mic. hooked up?
>thanks again.

>"John Beale" wrote in message
>news:yMvW8.13398$T_.279935@iad-read.news.verio.net...
>> j j wrote:
>> : is the noise level (-42 to -50 dB) is normal with VX2000 Camera? or do
>you
>> : think there might be something wrong either in Camera or in XLR
>> : adapter(studio 1)?
>>
>> I just tried this with my VX2000 and Studio1 XLR-Pro set to 0 input levels
>> (with no mic connected). I tried it both with the VX2000 mic input switch
>> set to "mic" and "line". I had the VX2k in AGC mode as that is supposed to
>> have lower input noise. I imported the audio via firewire and examined the
>> data with Cool Edit 2000.
>>
>> Average RMS power levels were about the same in each case: about -57 dB.
>> The spectrum was very flat, with a small peak near 15.7 kHz (video
>scanline
>> frequency). You can see the plots here:
>>
>> http://www.bealecorner.com/vx2000/mic-level.gif
>> http://www.bealecorner.com/vx2000/line-level.gif
>>
>> -john
>> www.bealecorner.com