"picnet2" <> wrote:
> In addition its hardly giving the same frequency response as
recorders that are cheaper:-
> I recently investigated this recorder, lots of tech below, in
summary: reach for something
> else...
>
> http://www.urlme.net/blog/?p=301
>
> -Mike.
Hi Mike,
How exactly did you measure the frequency responses? If I understand
your blog correctly, you used a 150 Ohm dummy termination as a
reference. If this was true, you actually measured the spectra of the
inherent noise floor of the recorder and not its frequency response!
To precisely measure the frequency response, you should better use a
high-level (lets say -12 dBFS) sine sweep signal.
Some time ago I measured the spectral noise floor characteristics of
the MR 1000 and the results were very similar to your diagrams (high
noise levels at frequencies above 25 kHz). However, if I remember
correctly, the frequency response itself was completely different
(exhibiting a slight attenuation at higher frequencies).
Regards,
Raimund
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