One Minute Test [OK]

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delilahbing
Posts: 6
Joined: October 22nd, 2020, 12:36 pm

Post by delilahbing » October 29th, 2020, 10:21 am

Hi everyone,

My name is Delilah Bing and this is my one minute test. I look forward to feedback so I can improve :)

Recording software: Audacity
Operating System: Mac
Mic Type: USB

here is the link to my recording: https://librivox.org/uploads/tests/test_delilahbing.mp3

silverquill
Posts: 15238
Joined: May 25th, 2013, 9:11 pm
Location: Pittsfield, New Hampshire USA

Post by silverquill » October 29th, 2020, 10:38 am

delilahbing wrote:
October 29th, 2020, 10:21 am
Hi everyone,

My name is Delilah Bing and this is my one minute test. I look forward to feedback so I can improve :)

Recording software: Audacity
Operating System: Mac
Mic Type: USB

here is the link to my recording: https://librivox.org/uploads/tests/test_delilahbing.mp3
Thank you for your sample recording.
The reading itself is fine, but there are two major technical issues.

First the bit rate is incorrect.
You need to set your audacity export rate to Bit Rate Mode - Constant Quality 128kb

Second, the volume is much too low, at only 81 dB.

Our target is 89 dB with an acceptable range of 86-92 dB

You may need to increase your input gain and/or the distance of the microphone.
It takes some playing around to get your set up just right, so try a few things.

I use two programs for checking volume.
The first is a little program called Checker https://wiki.librivox.org/index.php?title=Checker, written specifically for LibriVox. Just drag a file into the Checker window to check validation on all LV specs, including a readout of actual volume in decibels. Use the Amplification feature in Audacity to bring the volume closer to the LV target of 89 dB.

The second is an Audacity plugin called ReplayGain https://wiki.librivox.org/index.php?title=Measuring_Volume_within_Audacity. Running this feature will give a value of plus or minus dB from the LV target of 89 dB, and then the Amplification feature can be used to adjust the file before exporting.

Please upload a corrected recording and post the link here so we can check it out.
~ Larry

delilahbing
Posts: 6
Joined: October 22nd, 2020, 12:36 pm

Post by delilahbing » October 30th, 2020, 5:34 pm

silverquill wrote:
October 29th, 2020, 10:38 am
delilahbing wrote:
October 29th, 2020, 10:21 am
Hi everyone,

My name is Delilah Bing and this is my one minute test. I look forward to feedback so I can improve :)

Recording software: Audacity
Operating System: Mac
Mic Type: USB

here is the link to my recording: https://librivox.org/uploads/tests/test_delilahbing.mp3
Thank you for your sample recording.
The reading itself is fine, but there are two major technical issues.

First the bit rate is incorrect.
You need to set your audacity export rate to Bit Rate Mode - Constant Quality 128kb

Second, the volume is much too low, at only 81 dB.

Our target is 89 dB with an acceptable range of 86-92 dB

You may need to increase your input gain and/or the distance of the microphone.
It takes some playing around to get your set up just right, so try a few things.

I use two programs for checking volume.
The first is a little program called Checker https://wiki.librivox.org/index.php?title=Checker, written specifically for LibriVox. Just drag a file into the Checker window to check validation on all LV specs, including a readout of actual volume in decibels. Use the Amplification feature in Audacity to bring the volume closer to the LV target of 89 dB.

The second is an Audacity plugin called ReplayGain https://wiki.librivox.org/index.php?title=Measuring_Volume_within_Audacity. Running this feature will give a value of plus or minus dB from the LV target of 89 dB, and then the Amplification feature can be used to adjust the file before exporting.

Please upload a corrected recording and post the link here so we can check it out.


Hi there!

Thanks so much for the feedback and tips.
I was able to adjust the bit rate and volume - volume should be at about 89dB now.
I ran it through the Checker and it passed.

Hopefully all it good now, but would appreciate any other feedback !

Link: https://librivox.org/uploads/tests/test_delilahbing.mp3

Thanks!
Delilah

MaryAnnSpiegel
LibriVox Admin Team
Posts: 16158
Joined: February 23rd, 2009, 4:37 pm
Location: Chicago, IL

Post by MaryAnnSpiegel » November 18th, 2020, 8:45 pm

Delilah,

Just closing the loop here. Your updated test checks all the boxes. I'll mark this thread as OK.

Look forward to seeing you around the forums!

MaryAnn

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