[OK]1 Minute Test

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blanknote
Posts: 3
Joined: January 23rd, 2018, 8:08 am

Post by blanknote » January 28th, 2018, 8:33 am

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

Made with Audacity with a default Lenovo laptop mic, the system used is Windows 10.

moniaqua
Posts: 796
Joined: April 11th, 2013, 4:48 am
Location: Somewhere in the south

Post by moniaqua » January 28th, 2018, 1:49 pm

Welcome at LibriVox, blanknote.

Thank you for your test. You speak very clearly :)

Now, sampling rate is fine, recoding is in mono, which is fine, too.

Bitrate is 96 kbps; we need 128 kbps at a constant bitrate See here the export screen of Audacity 2.2.x: http://cisdem.de/librivox/AudaCity_2_2_pics/export.png

Volume is way up high, there is also a lot of clipping (red stripes if in View->Show Clipping the hook is set, if there are no stripes you see the peaks cut at the bottom and top of the track). Clipping distorts your voice which is a pity. Back away from the microphone far enough that the peaks stay at around 0.5 and -0,5 of the scale of the track.

I also notice some background noise as if you tapped on the PC or so; I don't mind those, it just might sound better or other people if they weren't there :)

You can measure the volume with ReplayGain from within Audacity to see if your recording has the required 89 dB (ranging fom 86 to 91 dB).

I also noticed a little bit of noise, but I'd prefer to have a look on that with a not distorted recording.

Please record another test, you might do a short poem or text for one of the short works collections, too, if Peter Piper seems to boring :)
Only post it here in this thread until we are sure the tech specs are right :) Of course, I'll take Peter Piper as well :) Thank you :)

blanknote
Posts: 3
Joined: January 23rd, 2018, 8:08 am

Post by blanknote » February 20th, 2018, 8:19 am

I made a new recording
https://librivox.org/uploads/tests/test_blanknote.mp3

However, I didn't check the decibels, I couldn't find this functionality in Audacity.

tovarisch
Posts: 2187
Joined: February 24th, 2013, 7:14 am
Location: New Hampshire, USA

Post by tovarisch » February 20th, 2018, 8:29 am

Checking volume (decibels) in Audacity is not a built-in function, it's a plug-in which Monika told you about: ReplayGain. If you click on the link she provided, you can read about that Audacity plug-in in our wiki.
tovarisch
  • reality prompts me to scale down my reading, sorry to say
    to PLers: do correct my pronunciation please

moniaqua
Posts: 796
Joined: April 11th, 2013, 4:48 am
Location: Somewhere in the south

Post by moniaqua » February 21st, 2018, 5:25 am

Or you could check it iwith checker (link see sig, last line)

This nice little Javascript just told me that your recording is PL ok. It is on the high side of volume now, so don't got any louder.

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