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<p>The way to remove any artifacts with an EQ is to sweep. Set your
frequency at 200 HZ, set the gain to 20, and then sweep it up.
when you hear the hiss, you can carefully notch out 1 db or so.
Use the q to make finer cuts so that it doesn't affect other
audio.</p>
<p>HTH,<br>
</p>
<p><br>
</p>
<div class="moz-signature">
<div>
<p>
<strong>Ty Littlefield (he/him/his)</strong><br>
</p>
<ul>
<li> <a href="https://tysdomain.com" target="_blank">From
Bytes to Bites</a>|
</li>
<li><a href="https://www.linkedin.com/in/ty-lerlittlefield/">Linkedin</a>|</li>
<li><a href="https://github.com/sorressean">Github</a></li>
</ul>
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</div>
<div class="moz-cite-prefix">On 2/27/2025 10:32 AM, Dale HELTZER via
NFBCS wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CPWP215MB2304F24FF1C93BFF4975B9B8BCCD2@CPWP215MB2304.LAMP215.PROD.OUTLOOK.COM">
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<p class="MsoNormal">Hi Steve,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am using an old cassette player lineout
fed to a Zoom h6 Essential.<o:p></o:p></p>
<p class="MsoNormal">The tapes, as I said, are old recordings of
lectures, interviews, and speeches. Most of the tapes are
home-made. Also, there are a few commercially-produced.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have Adobe Audition – about
twenty-year-old version.<o:p></o:p></p>
<p class="MsoNormal">Audacity has been installed, but I haven’t
taken the time to become fluent with it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I don’t have any illusions about getting
pristine results; I’d take easily-listenable as a successful
product.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I can do basic de-essing (some of the tapes
really need it).<o:p></o:p></p>
<p class="MsoNormal">I don’t have a lot of experience
eliminating tape hiss with filters, so any suggestions are
very welcome.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Be well -D<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’d<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div
style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="mso-ligatures:none">From:</span></b><span
style="mso-ligatures:none"> NFBCS
<a class="moz-txt-link-rfc2396E" href="mailto:nfbcs-bounces@nfbnet.org"><nfbcs-bounces@nfbnet.org></a>
<b>On Behalf Of </b>Steve Jacobson via NFBCS<br>
<b>Sent:</b> Tuesday, February 18, 2025 9:36 PM<br>
<b>To:</b> NFB in Computer Science Mailing List
<a class="moz-txt-link-rfc2396E" href="mailto:nfbcs@nfbnet.org"><nfbcs@nfbnet.org></a><br>
<b>Cc:</b> Steve Jacobson
<a class="moz-txt-link-rfc2396E" href="mailto:steve.jacobson@outlook.com"><steve.jacobson@outlook.com></a><br>
<b>Subject:</b> Re: [NFBCS] Audio SW optimized for voice
cleanup?<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif">Dale,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif">I have had
some experience with digitizing old recordings, although I
don’t know that I have gotten into it to the degree that Ty
has.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif">It would be
helpful to know what equipment you are using and if you
already have any audio software such as Audacity, Gold Wave
or something similar. To play the cassettes, are you using
a cassette deck or are you using a cassette player?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif">There are a
number of options for removing noise, but frankly, it is
very easy to introduce other problems when doing that. As
Ty has already stated, there is a lot you can do through
equalization, and hum can largely be removed with a notch
filter. Equalization can be applied with less risk of
introducing additional problems. Most audio editing
programs contain some kind of equalizer.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif">Let me know
more about your equipment and we could discuss this offline
if you like.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif">Best
regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif">Steve
Jacobson<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<div>
<div
style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="mso-ligatures:none">From:</span></b><span
style="mso-ligatures:none"> NFBCS <<a
href="mailto:nfbcs-bounces@nfbnet.org"
moz-do-not-send="true" class="moz-txt-link-freetext">nfbcs-bounces@nfbnet.org</a>>
<b>On Behalf Of </b>Dale HELTZER via NFBCS<br>
<b>Sent:</b> Tuesday, February 18, 2025 4:05 PM<br>
<b>To:</b> NFB in Computer Science Mailing List <<a
href="mailto:nfbcs@nfbnet.org" moz-do-not-send="true"
class="moz-txt-link-freetext">nfbcs@nfbnet.org</a>>;
<a href="mailto:main@jfw.groups.io"
moz-do-not-send="true" class="moz-txt-link-freetext">main@jfw.groups.io</a><br>
<b>Cc:</b> Dale HELTZER <<a
href="mailto:deheltzer@msn.com" moz-do-not-send="true"
class="moz-txt-link-freetext">deheltzer@msn.com</a>><br>
<b>Subject:</b> [NFBCS] Audio SW optimized for voice
cleanup?<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m in the process of digitizing a number
of old cassette tapes of lectures, interviews, etc.These are
*old tapes, and most of the audio so far is muddy or sloppy on
the sibilants – tape degradation, I’m sure.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">A quick Google search has found apps that
are especially for cleaning up podcast voice recording.<o:p></o:p></p>
<p class="MsoNormal">Does anyone have experience with any of
these?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Be well -D<o:p></o:p></p>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
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