Best Process to Convert these Files

Effects, Recipes, Interfacing with other software, etc.
Forum rules
If you require help using Audacity, please post on the forum board relevant to your operating system:
Windows
Mac OS X
GNU/Linux and Unix-like
eveshi
Posts: 24
Joined: Wed May 08, 2013 7:42 pm
Operating System: Please select

Best Process to Convert these Files

Post by eveshi » Wed May 08, 2013 8:05 pm

I have a couple hundred .swf files from this website.

http://www.leslieflint.com/recordingsnew.html

The issue is that the original recordings were made in the 50s-70s on reel-to-reel and occasionally a cassette recorder. If you listen to a few, you will note they suffer from nearly inaudible to pretty damn good considering the time, place and conditions (dark seance). My mission is to take the .swf files, to clean them up, and to convert them to files which can be used to perform transcriptions. Transcriptions = my poor typing skills, headphones and a step pedal to forward and reverse the files.

I believe but don't know if it is true that the files will have to be inmp3 form to be able to fwd-rev them. Obviously, this means that their may be a downgrade in quality of the files and this is defeating the purpose. As you can see, I am lost and clueless at the same time. :)

All suggestions welcomed.

P.S. The .swf files are go-pause-stop only (i.e. they cannot be advanced in increments) unless, again, I am missing something.

kozikowski
Forum Staff
Posts: 68942
Joined: Thu Aug 02, 2007 5:57 pm
Operating System: macOS 10.13 High Sierra

Re: Best Process to Convert these Files

Post by kozikowski » Wed May 08, 2013 9:29 pm

How are you playing them now?
Koz

Trebor
Posts: 9852
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows 8 or 8.1

Re: Best Process to Convert these Files

Post by Trebor » Thu May 09, 2013 12:23 am

Rather than record-what-U-hear from the computer speakers
you can download the swf file of 30min audio in less than 30 seconds ...

e.g. the audio on page ... http://www.leslieflint.com/madame230454p2.html

can be downloaded via ... http://www.leslieflint.com/swf/madame230454p2.swf

Then convert the swf file to MP3 ... http://audio.online-convert.com/convert-to-mp3

The audio on those particular SWF files is lousy: it only goes up to about 4KHz, (so is like a telephone),
and has plenty of compression artefacts ...
''when someone's queer'' 8KHz.wav
(181.38 KiB) Downloaded 139 times
BTW as the interviewee is a deceased spiritualist you can always contact them via a medium ;)

eveshi
Posts: 24
Joined: Wed May 08, 2013 7:42 pm
Operating System: Please select

Re: Best Process to Convert these Files

Post by eveshi » Thu May 09, 2013 4:12 am

kozikowski wrote:How are you playing them now?
Koz
GOM, VLC, aimp, foobar - but there is no ff/rw function much less incremental stepping.

eveshi
Posts: 24
Joined: Wed May 08, 2013 7:42 pm
Operating System: Please select

Re: Best Process to Convert these Files

Post by eveshi » Thu May 09, 2013 4:21 am

Trebor wrote:Rather than record-what-U-hear from the computer speakers
you can download the swf file of 30min audio in less than 30 seconds ...

e.g. the audio on page ... http://www.leslieflint.com/madame230454p2.html

can be downloaded via ... http://www.leslieflint.com/swf/madame230454p2.swf
Which is why I have over 200 of those swf files downloaded.
Then convert the swf file to MP3 ... http://audio.online-convert.com/convert-to-mp3
Thanks for that!
The audio on those SWF files is lousy: it only goes up to about 4KHz (like a phone) and has plenty of compression artefacts ...
''when someone's queer'' 8KHz.wav
Sorry that you missed the importance of these recordings.
BTW as the interviewee is a deceased spiritualist you can always contact them via a medium ;)
To obtain noise-free, distortionless recordings? :lol:

Thanks for your help. :)

eveshi
Posts: 24
Joined: Wed May 08, 2013 7:42 pm
Operating System: Please select

Re: Best Process to Convert these Files

Post by eveshi » Thu May 09, 2013 4:26 am

Honestly, I appreciate all responses but am I on the right track? I need to take the .swf files to a format that will allow Audacity and similar programs to clean them up.

Could anyone take a Leslie Flint .swf and put it thru it's paces?

Trebor
Posts: 9852
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows 8 or 8.1

Re: Best Process to Convert these Files

Post by Trebor » Thu May 09, 2013 10:34 am

eveshi wrote:... allow Audacity and similar programs to clean them up.
The computery noises (compression artifacts) cannot be cleaned up by Audacity or any other software I've seen.
The phone-like frequency-response cannot be improved either, the frequencies above about 4KHz have been cut-off : no cure for amputation.
The mains-hum could be removed, but note the mains frequency on the extract I posted above is 48Hz, should be 50Hz, (may be due to the tape running slow).
eveshi wrote:Could anyone take a Leslie Flint .swf and put it thru it's paces?
If you have a swf file you could upload it to the site I mentioned, [I use that site myself without problems, but do so at your own risk]

At that online converter page you can choose to rip the audio from the SWF as a MP3 or WAV which you then download to your computer and can play / edit on Audacity. [Given how technically poor the recordings are, mp3 at 128Kbps would be sufficient , and about 1/10th the file-size of the WAV ]
Attachments
swf to mp3.gif
http://audio.online-convert.com/
swf to mp3.gif (28.44 KiB) Viewed 3409 times

eveshi
Posts: 24
Joined: Wed May 08, 2013 7:42 pm
Operating System: Please select

Re: Best Process to Convert these Files

Post by eveshi » Thu May 09, 2013 5:25 pm

Any reason to convert these to flac under the scenario I have laid out?

steve
Site Admin
Posts: 80752
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: Best Process to Convert these Files

Post by steve » Thu May 09, 2013 5:40 pm

eveshi wrote:Any reason to convert these to flac under the scenario I have laid out?
To avoid unnecessary loss of sound quality you need to use a "lossless" encoding format such as WAV or FLAC.
WAV files are the most widely supported format (just about every media player supports 16 bit WAV).
FLAC files are about half the size as WAV files (but the same sound quality).
If file size/disk space is an issue then FLAC could be a good option (though these days you can get huge hard disks and big USB memory sticks for not much money).
For compatibility with other programs, 16 bit WAV is your best option (this is the default export format in Audacity).
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

Trebor
Posts: 9852
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows 8 or 8.1

Re: Best Process to Convert these Files

Post by Trebor » Thu May 09, 2013 6:38 pm

eveshi wrote:Any reason to convert these to flac under the scenario I have laid out?
If you're using an on-line converter, like the one I linked to, the size of the audio file produced is relevant : the WAV/FLAC/MP3 produced by the converter website will pass across t'internet . A WAV will take about 10 times longer to download , and use 10x more bandwidth, than an almost equivalent MP3

FLAC is about half the size of an equivalent WAV and lossless, (as Steve suggested select 16bit, 8bit is poor, 24/32bit overkill). MP3 is about 1/10th the size of WAV and using 128Kbps @22050Hz I doubt anyone will be tell the difference from the technically lousy original.

[ BTW you do know this channeling stuff is total-fiction : it sounds like a ventriloquist act . Would an un-educated haich-dropping street-urchin use the phrase "an individual" ? , no they'd either say "a person" or use "someone" twice on the same sentence ].

Post Reply