Archive for May, 2014

L-Normalizer workflows

Loudness Workflows

Pro Tools recommended workflow




a. Select the audio region and then load the plug-in from the Audio Suite top menu. Sometimes the plug-in will display values from previews sessions, simply double-click the Analyze-Render slider under L-Normalizer for a complete reset.

b. With the slider set on Analyze, click the Render button from the lower right corner. After rendering, a detailed report will be displayed under the Source label with values for Program Loudness, Maximum Short Therm Loudness, Maximum Momentary Loudness, Loudness Range and Maximum True Peak.

c. A typical EBU compliant file will need to have a program loudness of -23 LUFS, with a max true peak of -1 dBTP. Now you can set the target values for normalization and then click on the Analyze-Render slider. Be advised: after switching to render mode the target values will be locked. If you want to return to analyze mode, the source values will be reset and a new analysis will be needed.

d. Once you click on the Render button, the plug-in will normalize the file and do a final analysis. You can check the values under the Source label for the new loudness measurements.

! Be advised: if heavy true peak limiting occurs the program loudness will not be 100% accurate.

For 5.1 file formats you need to make sure that the clip is on a 5.1 track and not split into multi mono channels.



Nuendo recommended workflow



a. 
Select the audio region and then load the plug-in from the Audio top menu. Sometimes the plug-in will display values from previews sessions, simply double-click the Analyze-Render slider under L-Normalizer for a complete reset.

b. With the slider set on Analyze, click the Process button from the lower right corner.

! Don’t panic: The Nuendo Engine will atomically close the plug-in when processing.

Simply reload the plug-in and a detailed report will be displayed under the Source label with values for Program Loudness, Maximum Short Therm Loudness, Maximum Momentary Loudness, Loudness Range and Maximum True Peak.

c. A typical EBU compliant file will need to have a program loudness of -23 LUFS, with a max true peak of -1 dBTP. Now you can set the target values for normalization and then click on the Analyze-Render slider.

d. Once you click on the Process button, the plug-in will normalize the file and do a final analysis. You can check the values if you reopen the plugin, under the Source label for the new loudness measurements.

! Be advised: if heavy true peak limiting occurs the program loudness will not be 100% accurate.

For 5.1 file formats you need to make sure that the clip is on a 5.1 track and not split in to multi mono channels.



Premiere Pro recommended workflow



a. From the Effects Tab, under Audio Effects, select the L-Normalizer plug-in and drop it on the audio clip. You will find two L-normalizer plug-ins, one for mono and stereo files and the other for 5.1 files. Under the Effects Controller Tab, click on the edit button to access the plug-in interface. Sometimes the plug-in will display values from previews sessions, simply double-click the Analyze-Render slider under L-Normalizer for a complete reset.

b. Premiere Pro engine doesn’t feature an offline audio processor. So, in order to analyze the file, you will need to export it to your hard drive in an audio format with the correct channel count. After exporting, simply remove the plug-in from the Effects Control tab and reloaded from the Audio Effects menu. After clicking the edit button a detailed report will be displayed under the Source label with values for Program Loudness, Maximum Short Therm Loudness, Maximum Momentary Loudness, Loudness Range and Maximum True Peak.

c. A typical EBU compliant file will need to have a program loudness of -23 LUFS, with a max true peak of -1 dBTP. Now you can set the target values for normalization and then click on the Analyze-Render slider.

Now you can check the file playing it or export a video master file with a loudness compliant audio track. Be advised: in playing mode the target values will be locked. If you want to return to analyze mode, the source values will be reset and a new analysis will be needed.


! Be advised: if heavy true peak limiting occurs the program loudness will not be 100% accurate.