Recommendation needed for portable wideband recorder

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The Ghost - 19 May 2006 02:51 GMT

I have found a nice house to haunt and don't like to travel. The immediate
problem is that I need to have an out-of-state client make and record some
measurements and send the recordings to me to analyze using equipment that
is not easily transported. A walkman type DAT machine would be ideal, but
20KHz signal bandwidth is grossly inadequate. I need some sort of portable
or semi-portable recorder that has 12-bit dynamic range and a 50KHz (100KHz
preferably) signal bandwidth, with built-in anti-aliasing filter(s). I
have both Racal and Bruel & Kjaer instrumentation recorders, but neither is
exactly "portable" as far as today's standards are concerned. Only a
single channel and 2-3 minutes of recording time are required. Signal
level is +/-3Vpeak. Any recommendations?

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Asbjørn - 19 May 2006 15:56 GMT

>I have found a nice house to haunt and don't like to travel. The immediate
> problem is that I need to have an out-of-state client make and record some
[quoted text clipped - 10 lines]
> single channel and 2-3 minutes of recording time are required. Signal
> level is +/-3Vpeak. Any recommendations?

Have you considered using a laptop with a good external soundcard with
sampling frequency 96 or 192 Hz, e.g. FireFace ?

Asbjørn

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Angelo Campanella - 19 May 2006 23:22 GMT

>>20KHz signal bandwidth is grossly inadequate. I need some sort of
>>portable
>>or semi-portable recorder that has 12-bit dynamic range and a 50KHz
>>(100KHz
> Have you considered using a laptop with a good external soundcard with
> sampling frequency 96 or 192 Hz, e.g. FireFace ?

I agree that it is time to examine closely the sound board/hard rive
approach to sound recording.. (Many children are walking around with
more bandwidth and drive space than we adults ever dreamed of a few
years ago).

Ang. C.

> Asbjørn

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Peter Larsen - 20 May 2006 07:24 GMT

> >>20KHz signal bandwidth is grossly inadequate. I need some sort of
> >>portable
> >>or semi-portable recorder that has 12-bit dynamic range and a 50KHz
> >>(100KHz
> > Have you considered using a laptop with a good external soundcard with
> > sampling frequency 96 or 192 Hz, e.g. FireFace ?

> I agree that it is time to examine closely the sound board/hard rive
> approach to sound recording.. (Many children are walking around with
> more bandwidth and drive space than we adults ever dreamed of a few
> years ago).

Fostex FR2 is better than semi-portable and does 24-96 to flash card.
Seems to be a decent approximation to the questionee's wished stats. It
even sounds good when used for location music recording.

> Ang. C.

Kind regards

Peter Larsen

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Natural Science Forum / Physics / Acoustics / May 2006

Recommendation needed for portable wideband recorder