On 6/22/2018 10:42 AM, Dan Gediman wrote:
> Thanks, everyone for all your input so far. Some info that might help
> clarify things. The unit I’m using is a GE micro cassette tape
> player/record, NOT a mini cassette. Second, removing the tape and
> transferring it to a standard cassette is not an option here, as I
> have to return these tapes as is to their owner. Lastly, the unit has
> a mono mini-plug earphone jack and the recording itself is mono. And
> I’ve already adjusted the azimuth to the best of my ability using my
> ear. I don’t have access to a meter to check precisely (unless
> someone can suggest a software meter that would work).

Probably your ears are suffucient -- tweak the azimuth screw for maximum
treble.
> 
> As far as RX5, I have used the De-noise module in spectral mode,
> feeding it a sample of the background noise. It has made it
> substantially better, but I’m trying to see if I can make it ever
> better. I also experimented with the presents of the corrective EQ
> module. I haven’t tried the Spectral Repair option, because frankly
> I’m not sure how to use it properly. If you think it could help, I’ll
> go online and find some tutorial videos to bring me up to speed.
> Ditto for any of the other RX5 modules that you think might help
> (de-clipping has been suggested, as has de-reverb).
> 

> Anything else you think I should try, hearing the file and knowing
> what I have already tried?

Sounds like you're on the right road. You might get better
intelligibility if you use a parametric equalizer to boost 7.5kHz by a
dB or so after the de-noising has been done, which will make consonants
easier to hear, but that'll worsen the audible noise. You'll have to
decide whether that's worth the tradeoff.

Incidentally, what are you using for audio monitors?

Peace,
Paul Stamler

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