[OK]Mergatroid 1-minute test [split off]

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Mergatroid
Posts: 4
Joined: November 18th, 2018, 11:49 am

Post by Mergatroid » December 1st, 2018, 8:34 pm

Here's my 1-minute test: https://librivox.org/uploads/tests/test_Mergatroid.mp3.

If all's well, I'll make my recording soon.

SkyRider
Posts: 322
Joined: May 3rd, 2013, 10:27 am
Location: Cambridge, UK

Post by SkyRider » December 2nd, 2018, 2:22 am

Mergatroid wrote:
December 1st, 2018, 8:34 pm
Here's my 1-minute test:
Hi Mergatroid...

You've got a lovely, relaxing voice. :D The reading is great, but there are a few technical aspects of the MP3 encoding that need tweaking to fit in with Librivox's standards. These seem like a bit of a faff, but it means that listeners don't (for example) have to listen to a really loud chapter followed by a really quiet one.
  • The file needs to be 128Kbps Mono - yours is 160Kbps Stereo
  • The volume needs to be about 7dB louder - I see you've encoded using iTunes and I'm not sure how straightforward it is to amplify on that. It may be that you need to look at using a more sophisticated audio package. Audacity is free and readily available and has a lot of love around here; I've had a lot of success with the equally free (and simpler) Ocenaudio; still others use Twisted Wave as a cloud app. There are many options out there that needn't cost money. The Librivox standard is a loudness measured with Replaygain of 89dB plus or minus 2 - yours is 82.4dB. Another means of measuring loudness that other software uses is LUFS - a Replaygain value of 89dB roughly equates to a LUFS of -18.
  • There ought to be less than 1 second of silence at the start. There ought to be 5 seconds of silence at the end.
  • There's a reasonable amount of noise - not enough to fail the technical requirements, but you may want to consider applying a small amount of noise reduction if your software allows - again, I'm not sure you could do that with iTunes.
But these are all technical issues and easily sorted. The important thing is that the content is great and you can do all these fixes without needing to re-record.

Cheers,
Paul

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 2nd, 2018, 7:02 am

I've split this off from the project thread, so that the test doesn't get lost in the project. :)

(FYI, Paul, 1-minute tests don't need the <1 second at the front and 5 seconds at the end; it's not in the instructions for the test.) ;)

SkyRider
Posts: 322
Joined: May 3rd, 2013, 10:27 am
Location: Cambridge, UK

Post by SkyRider » December 2nd, 2018, 9:43 am

TriciaG wrote:
December 2nd, 2018, 7:02 am
(FYI, Paul, 1-minute tests don't need the <1 second at the front and 5 seconds at the end; it's not in the instructions for the test.) ;)
Sorry - my bad. It's a while since I did mine...

Mergatroid: one thing I forgot to mention is that Phil, one of the admin team, has made some handy videos showing how to do some of these things in Audacity. Note that some of these are a little out of date - in particular, the interface has been spruced up a bit and you don't need to enter the tags for the files any more as that's done automagically these days.

Making your 1 minute test: https://www.youtube.com/watch?v=BlaRY_-bcfs

Saving an MP3 file (this will show you where to change the bit rate): https://www.youtube.com/watch?v=PayLxyfa-FA

Setting the loudness: https://www.youtube.com/watch?v=Pz4GF3HEXV4

I haven't seen one on converting a stereo recording to mono, but it's fairly straightforward - select the tracks (click in the grey area to the left to select all of both quickly), click on the Tracks menu at the top, select Mix then Mix Stereo Down to Mono. That's it.

Cheers,
Paul

Mergatroid
Posts: 4
Joined: November 18th, 2018, 11:49 am

Post by Mergatroid » December 2nd, 2018, 12:51 pm

Thanks everybody! I think I've got all the issues ironed out now.

https://librivox.org/uploads/tests/test_mergatroid.mp3

SkyRider
Posts: 322
Joined: May 3rd, 2013, 10:27 am
Location: Cambridge, UK

Post by SkyRider » December 2nd, 2018, 1:15 pm

Looks good to me - great work!

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