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Post Posted:: August 20th, 2017, 11:27 am 

Joined: July 5th, 2017, 10:18 am
Posts: 34
I re uploaded the correct chapter 4. Here it is : https://librivox.org/uploads/annise/conquestofbread_04_kropotkin_128kb.mp3
I also uploaded chapters 5&6.
5: https://librivox.org/uploads/annise/conquestofbread_05_kropotkin_128kb.mp3
6: https://librivox.org/uploads/annise/conquestofbread_06_kropotkin_128kb.mp3

Is everything all right with these ones?


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Post Posted:: August 20th, 2017, 1:57 pm 
LibriVox Admin Team

Joined: December 17th, 2011, 3:56 pm
Posts: 15118
Location: Chicago
4
intro and outro missing;
needs 5s of silence at file end
volume is a tad low (85.5dB). Goal is 86-92dB
5
chapter title missing at end of intro
ending silence should be 5s
6
ending silence should be 5s


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Post Posted:: August 20th, 2017, 7:58 pm 
LibriVox Admin Team

Joined: April 3rd, 2008, 3:55 am
Posts: 27773
Location: Melbourne,Australia
S0 it looks like you added 4 & 5 without adding the intro-outro :D

So your question about 06 (uploaded as 04) about whether it's OK is yes , just make the end silence about 5 secs - we try to keep them consistent , too short and the files are sometimes truncated , losing text, too long and people think their batteries are flat :D

Anne

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Our objective is to make all books in the public domain available, for free, in audio format on the internet. - Hugh McGuire.


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Post Posted:: August 22nd, 2017, 6:57 am 

Joined: July 5th, 2017, 10:18 am
Posts: 34
Quick question, How do you measure Dbs? I'm using audacity if that helps.


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Post Posted:: August 22nd, 2017, 7:06 am 
LibriVox Admin Team

Joined: December 17th, 2011, 3:56 pm
Posts: 15118
Location: Chicago
Determining volume level
Use the instructions below to install the plugin ReplayGain into Audacity.
- Click this link,
http://forum.audacityteam.org/download/file.php?id=4685
and save the file to your computer - somewhere you can find it.
- Then go to the folder in which Audacity is installed (on my computer, it's in C:\Program Files (x86)\Audacity) and open the Plug-Ins folder.
- Drag or copy the file you saved into the Plug-Ins folder.
- The next time you start up Audacity go to Effects/ReplayGain* and it'll tell you how much you can amplify your file. If you highlight part of the file it will tell you how much you can amplify just that part of the file. It does not give you the exact dB of the file but it can be inferred from how much it tells you to amplify.
*If you do not see the plugin (near the bottom of the Effect dropdown menu), then at the very top of the Effect menu click on Add/Remove Plugins. You may need to "enable" the plugin. Once enabled restart Audacity and look for the plugin in the Effect dropdown menu.

Another useful program is Mp3Gain. It gives you actual dB levels for the audio file and it can also analyze multiple files (e.g. an entire book). It is a separate program independent from Audacity and is available free at the following link:
http://mp3gain.sourceforge.net/download.php

Clipping
Always use Audacity (Effects/Amplify) to change the volume of the file. If clipping occurs and prevents amplification you will need to use Effect/Compressor to amplify without clipping. Watch the video below.
http://www.youtube.com/watch?v=wJ3lOTDsN6c


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Post Posted:: August 22nd, 2017, 8:56 am 

Joined: July 5th, 2017, 10:18 am
Posts: 34
Is this loud enough? http://uploads.librivox.org/annise/conquestofbread_04_kropotkin_128kb.mp3


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Post Posted:: August 22nd, 2017, 9:02 am 
LibriVox Admin Team

Joined: December 17th, 2011, 3:56 pm
Posts: 15118
Location: Chicago
85.7dB

You need to remove the peaks in the waveform (compression) before you can amplify higher.


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Post Posted:: September 3rd, 2017, 9:58 am 

Joined: July 5th, 2017, 10:18 am
Posts: 34
Is this loud enough? http://uploads.librivox.org/annise/conquestofbread_04_kropotkin_128kb.mp3


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Post Posted:: September 3rd, 2017, 10:21 am 
LibriVox Admin Team

Joined: December 17th, 2011, 3:56 pm
Posts: 15118
Location: Chicago
Too high actually (95.0dB).

If you are using Audacity there is a plugin you can install that will let you know the volume. There is also another free program, MP3Gain, that determines file volume. I can give you directions on how to install either.


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Post Posted:: September 3rd, 2017, 10:39 am 

Joined: July 5th, 2017, 10:18 am
Posts: 34
What's the plugin called? The audacity one that tells you the volume?


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Post Posted:: September 3rd, 2017, 11:01 am 
LibriVox Admin Team

Joined: December 17th, 2011, 3:56 pm
Posts: 15118
Location: Chicago
Use the instructions below to install the plugin ReplayGain into Audacity.
- Click this link,
http://forum.audacityteam.org/download/file.php?id=4685
and save the file to your computer - somewhere you can find it.
- Then go to the folder in which Audacity is installed (on my computer, it's in C:\Program Files (x86)\Audacity) and open the Plug-Ins folder.
- Drag or copy the file you saved into the Plug-Ins folder.
- The next time you start up Audacity go to Effect/ReplayGain* and it'll tell you how much you can amplify your file. If you highlight part of the file it will tell you how much you can amplify just that part of the file. It does not give you the exact dB of the file but it can be inferred from how much it tells you to amplify.
*If you do not see the plugin (near the bottom of the Effect dropdown menu), then at the very top of the Effect menu click on Add/Remove Plugins. You may need to "enable" the plugin. Once enabled restart Audacity and look for the plugin in the Effect dropdown menu.


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Post Posted:: September 3rd, 2017, 11:04 am 

Joined: July 5th, 2017, 10:18 am
Posts: 34
I already have replay gain, i was hoping for a plugin that can actually tell the db.
I'll try the other thing and get back.


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Post Posted:: September 3rd, 2017, 11:29 am 
LibriVox Admin Team

Joined: December 17th, 2011, 3:56 pm
Posts: 15118
Location: Chicago
Mp3Gain gives you actual dB levels for the audio file and it can also analyze multiple files (e.g. an entire book). It is a separate program independent from Audacity and is available free at the following link:
http://mp3gain.sourceforge.net/download.php


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Post Posted:: September 3rd, 2017, 11:52 am 

Joined: July 5th, 2017, 10:18 am
Posts: 34
I installed it (had to switch to a different pc because mp3gains is win only) and it works great.
Here's the recording of chapter 4 lowered to only 89db : http://uploads.librivox.org/annise/conquestofbread_04_kropotkin_128kb.mp3


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Post Posted:: September 3rd, 2017, 12:18 pm 
LibriVox Admin Team

Joined: December 17th, 2011, 3:56 pm
Posts: 15118
Location: Chicago
4 PL OK.

I'm getting 86.7dB but that's an acceptable value (86-92dB).


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