Date: Wed, 22 Sep 2004 01:45:17 -0700 (PDT)
From: Matt Hanson <[EMAIL PROTECTED]>
Subject: Re: [LIB] Possible Audio glitch solution; me in Japan soon?
--- David Chien <[EMAIL PROTECTED]> wrote:
> Hmmmm, I'll have to test it out this weekend if I
> can find an output source loud enough.....
I dug out an old Pioneer receiver a while back, and
have been recording music from FM broadcasts off the
air right to wav files, which then get compressed to
MP3s. Just like the 'good old days' of recording
cassettes of FM broadcasts, but with a computer-age
twist where I can tote hours of music around on a tiny
portable MP3 player. Meanwhile the RIAA is still just
going after people file sharing. :-P
But how 'bout trying the headphone output from a
portable CD player if you have one where you can
control the output level? I'm not that familiar with
audio, but through the years it always seemed
headphone output pretty closely line-out impedance for
recording.
> It's always been -15 to -20db Max here....
I guess it all depends on the source, and how it goes
through whatever is doing the amplification. Feeding
an FM signal from the receiver�s tape-out (no
line-out� again close in impedance I guess) into the
TDK, I�m seeing a recording level of -12db to �10db.
Feeding the line-out from a portable CD player
achieves only �35db to -20db. Feeding the CD line-out
to the receiver aux-in, and the receiver�s tape-out to
the TDK gets the same �35db to -20db range. The
receiver didn�t see to modify the signal. For some
reason the feeding the tape-monitor input on this
receiver doesn�t seem to work, or I�m missing
something.
The only way I can reach a maximum recording level of
�7.5db to -7db is via headphone-out.
I just did a little test recording from my receiver�s
headphone output while raising the volume little by
little. The output signal recorded just goes flat at
7.5db to -7db, and the signal clipped resulting in
more and more distortion as I cranked the volume even
further without it ever reaching 0db.
So the end of the test waveform was just a solid bar
between the -6db positive side of the waveform, and
the -6db side of the waveform on the negative side of
-inf in SoundForge. ... Seems odd to me it never
reaches 0db ... but as I said, I don't know a lot
about audio.
> And, the nice features?
> 1) USB port built-in
> 2) No drive overlay programs required for large
> HDs.
> 3) built-in webcam/digicam
> 4) built-in SmartMedia slot. Okay, not as useful
> as a CF slot, but allows
> for quick backups to dirt-cheap 128MB SM cards of
> data and so forth.
>
> Out of all that, USB port & no drive overlay are
> the ones I like the most.
I would think that the added 64MB RAM would add
something too, and a XPLite OS may actually work
nicely.
> Sadly, no English drivers at all, so better be ready
> for a 100% Japanese Libretto.
Heh... guess that popped my balloon. Just out of
curiousity though... how much are you expecting to
find one for over there David?
Matt
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