1 minute test

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Joined: April 23rd, 2019, 1:20 pm

Post by RTJarrell » April 26th, 2019, 6:50 am

Hello All,

This is my test sample, https://librivox.org/uploads/tests/test_rtjarrell.mp3

It is an unedited recording made on audacity, on a mac, and with a Samson q2u microphone using an analog input. Any feedback would be greatly appreciated! I would love to start volunteering!


Posts: 1960
Joined: January 18th, 2019, 6:26 pm
Location: California

Post by lymiewithpurpose » April 27th, 2019, 8:16 pm

Hi there, nice recording. I love how you added an additional piece at the end, made it pleasurable to listen to 8-). There's only a few things to fix first.

Firstly, let's look at your volume. If you haven't already, downloading the program Checker can help you see your volume. Your volume is currently at 78.7 dbs, Librivox requires a range of 86-92 with 89 being preferred.

I recommend increasing the microphone slider in Audacity, so that it will input at a higher value. To fix this recording however:
1. Select your entire recording
2. Go to menu items Effect>Amplify
3. Enter whatever number you need to get to 89 (in this case 10.3) in the first box
4. Hit OK.
This should get you to the required range!

When I tried this, I ran into a slight problem. The program would only let me amplify by about 8 dbs! So what I would do in this situation is amplify by the 8, then run the compressor. To do this:

1. Select your entire recording
2. Go to Effect>Compressor
3. Choose your settings. Mine (in order) are -12, -40, 7:1, 0.20, 1.
4. Hit OK

Then, I would try and amplify by the extra two. Even then, I had to compress it again. If you go to View>Show Clipping, it will show you thick red lines whenever your peaks get too high. If I see red, I immediately compress it. (This being said, if you begin recording and see red lines appear, I would stop and lower down your microphone slider. Distortion often affects it).

Once you get it to the desired volume range, it is time for some noise cleaning to remove that background hum. To do so:
1. Select a small piece of your recording that is pure noise
2. Go into menu items Effect>Noise Reduction
3. In Section 2 on the screen, choose your settings. My settings are Noise Reduction: 12, Sensitivity: 6, Frequency: 0.
4. Select 'Get Noise Profile'.
5. Select your entire recording.
6. Go to menu items Effect>Repeat Noise Reduction.
7. Take a listen, you may find that you want to do this over again to reduce more noise.

Ok, I know this was rather a lot and pretty complicated. I hope it makes sense. If it doesn't, please ask any clarifying questions. If it does, please make these changes, re upload, post in this thread, and I'll take another listen :D

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