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Re: Serious Audio Response Flaw in Sony HVR-V1U - Submit Your Tests in Our Database

Posted by Arny Krueger on 07/18/07 19:14

"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in
message news:f785nd$knk$1@aioe.org
> On a sunny day (Fri, 13 Jul 2007 11:08:45 -0400) it
> happened "Arny Krueger" <arnyk@hotpop.com> wrote in
> <S76dnb8oWso5CArbnZ2dnUVZ_umlnZ2d@comcast.com>:
>
>> "Mark & Mary Ann Weiss" <mweissX294@earthlink.net> wrote
>> in
>> message news:7_Cfi.319661$NO1.815@fe05.news.easynews.com
>>
>>> Needless to say, I think Sony has a major issue to
>>> correct with these cameras. It's worse than the PD150
>>> hiss problem. In all other respects, the V1U audio is
>>> acceptable. s/n is pretty good for a camera, but there's
>>> no excuse to roll off the low end at 1222Hz. Look at
>>> these results, carefully measured under laboratory
>>> conditions:
>>>
>>> http://www.basspig.com/HVR-V1U_PCM_Audio(DV).htm
>>
>> You have been mislead by a vastly expanded vertical dB
>> scale.
>>
>> The actual -3 dB point is about 130 Hz. The rolloff is
>> hard to judge because of the expanded scale, but does
>> not seem to be overly rapid. Not all that great, but
>> about an order of magnitude better than you have been
>> mislead to believe.
>>
>> This camera won't be all that bad for voice and most
>> music.
>
> It is crap.

That may be, but for some kinds of recording (examples previously provided
below), but 3 dB down at 130 Hz isn't fatal.

>> It is not the
>> tool of choice for recording big pipe organs, bass
>> guitars or other instruments with deeper significant
>> bass fundamentals.

> In a [concert] hall there are _always_ lower responses.

Of course, but recording concerts isn't the sole criteria for the usuability
of a portable camera.

If you are really serious about sound quality, you won't be using just the
internal sound of the camera, anyways.

> use a spectrum analyser.

You obviously don't know who you are talking to.

>> However, an octave or
>> two of additional bass could be restored with some
>> well-thought out equalization.

> That is crap, would amplify noise and hum only.

Horsefeathers. When you boost a range of frequencies such as I suggest, you
may amplify some hum and noise, but you'll also amplify any music in that
range. That fact falsifies your claim that only the noise and hum will be
amplified. If your recording is reasonbly clean, ther won't be that much
noise and hum.

> I have no idea why Sony cut of LF that way, maybe it was
> a new designer who well you know, or to get rid of noises
> from the camera?

I'm sticking to my origional point, which is that 3 dB down at 130 Hz, while
not the best and not even very good, isn't totally fatal.

> Flat to 20Hz is the least one should expect,

Aw come on. Most of the mics this camera will be used with are 3 dB or more
down at 130 Hz anyway.

> and for 4000$ or more I would not expect anything less then the best.

I'm informed that to get the best, prices up in the five figure range are
common.

 

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