3200runner Test (split from another thread) [OK]

All languages: post your test recording here. Help check audio files, provide editing services, and advertise for proof-listeners.
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3200runner
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Joined: October 9th, 2018, 8:31 am

Post by 3200runner » December 7th, 2018, 1:49 pm


TriciaG
LibriVox Admin Team
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Joined: June 15th, 2008, 10:30 pm
Location: Toronto, ON (but Minnesotan to age 32)

Post by TriciaG » December 7th, 2018, 6:49 pm

OK, yeah, sorry about that. I moved this post from your book thread and didn't say a word about it. :oops:

It sounds good! There are some technical settings to fix, however.

1. The recording is in stereo. To change all future recordings, go to Edit, Preferences, Devices. Under Recording, change Channels to "1 (Mono)". (To fix existing files, go to Tracks/Mix/Mix Stereo down to Mono.)

2. Your volume is too low. Visually, you should aim for your wave forms to peak near the 0.5 mark, like this:
Image

Numerically, your file is at 82 dB, and we aim for 89.

Make sure the microphone slider in the Audacity window is all the way up. Also, have you increased your input volume in Windows yet? Here's a link to instructions: http://wiki.librivox.org/index.php/Audacity_1-2-3#Volume

(On existing recordings, you can amplify by 7 dB, but note that your background noise will also get louder. More on that later.)

3. Bit rate is variable; it needs to be 128 kbps constant. This is set when you export to MP3. When you go to export, on the screen where you enter the file name for the MP3, change the Bit Rate mode to Constant, and the quality should be 128 kbps. You should only have to set it once; it'll remember the setting until you change it again.

My final item is more a suggestion rather than a "you need to fix this" item. :) I would suggest some noise reduction to take care of the background white noise. Here are a couple resources:
text instructions: http://wiki.librivox.org/index.php/Noisecleaning_With_Pics
video, but with an older version of Audacity so the settings are different: http://www.youtube.com/watch?v=VFSg9o37HMw

My settings are as follows:
Noise reduction: 10-16 (My default is 12)
Sensitivity: 6
Frequency Smoothing: 6

Whew! It sounds like a lot, but most of it is a one time change in settings that will stay that way for future recordings. Try making these adjustments, then post another test. Use the same file name as your previous one, and post in this same thread when it's ready. :)

Oh! And I was going to mention that there's a small program the spouse of a LibriVoxer developed to check the tech settings. If you're game, you can download it and use it to check the volume and other settings. It's here: http://cgjennings.ca/checker/

Use the latest version, which I believe is 0.95 or 0.97. The volume information is in the Information tab. We aim for 89 dB, but anything between about 86 and 92 is good.

3200runner
Posts: 7
Joined: October 9th, 2018, 8:31 am

Post by 3200runner » December 28th, 2018, 1:22 pm


TriciaG
LibriVox Admin Team
Posts: 40014
Joined: June 15th, 2008, 10:30 pm
Location: Toronto, ON (but Minnesotan to age 32)

Post by TriciaG » December 28th, 2018, 2:24 pm

Tech settings are now all OK. :thumbs:

The last thing to take care of is the background noise. I would suggest some noise reduction to - well, to reduce it. :) Here are a couple resources:
text instructions: http://wiki.librivox.org/index.php/Noisecleaning_With_Pics
video, but with an older version of Audacity so the settings are different: http://www.youtube.com/watch?v=VFSg9o37HMw

My settings are as follows:
Noise reduction: 10-16 (I suggest about 14 for you)
Sensitivity: 6
Frequency Smoothing: 6

Try it and see what you think, and then post your results. :)

3200runner
Posts: 7
Joined: October 9th, 2018, 8:31 am

Post by 3200runner » January 13th, 2019, 3:53 pm

okay I figured out how to reduce the background noise. Here it is https://librivox.org/uploads/triciag/test_3200runner.mp3

TriciaG
LibriVox Admin Team
Posts: 40014
Joined: June 15th, 2008, 10:30 pm
Location: Toronto, ON (but Minnesotan to age 32)

Post by TriciaG » January 13th, 2019, 3:56 pm

You've got it! You're set to record. 8-)

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