Loudness, LUFS, LKFS and True Peak Demystified | Masterclass

There are many videos online about how to mix for loudness specs and what the various plug-ins are. This masterclass is more on the deep dive details on how loudness and true peak are measured and going into much more details on the ITU specs, EBU specs, ReplayGain, Dialog Gate, True Peak Calculation, LKFS, LUFS, Momentary, Integrated, Short Term and Loudness Range measurement method and many more. This is a detailed video with the sole aim of explaining how these are calculated, and how we can learn new techniques once we understand how to read those specifications. Subscribe and hit the reminder bell to stay updated when we upload new tutorials.

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Topics:

00:00:48 Title
00:01:19 Agenda
00:01:49 What is Loudness
00:02:48 Factors Influencing Loudness
00:04:02 Sound Pressure Level
00:06:15 Frequency
00:07:23 K Weighted Filter
00:08:49 Duration
00:10:04 Equation
00:11:21 Weightage
00:11:48 Measurement Method
00:14:54 ITU-BS 1770-1
00:16:59 LUFS and LKFS
00:18:17 Measurement Terms
00:19:27 M/S/I Measurements
00:22:32 Loudness Range
00:25:31 PLR and PSR
00:27:10 Loudness Measurement Diagram
00:30:48 ReplayGain
00:33:00 TruePeak
00:36:15 ITU - BS 1770-3
00:37:58 ITU - BS 1770-4
00:39:50 ITU Specs
00:40:09 Netflix and Dialog Gate
00:40:45 Recommendations
00:41:24 Streaming Recommendations
00:42:20 Loudness for Youtube
00:43:46 LUFS and LEQ(m)
00:46:00 LUFS and SPL
00:46:00 Loudness and SPL for Playback Devices (CENELEC)
00:48:25 Plug-Ins
00:48:43 Summary

#audiomasterclass

[isaac]

Fantastic video! I love this incredibly deep dive into audio engineering.

[sergiitk]

This is a gem. Not a sound engineer, but do some mixing for the open source community. All clear, easy to follow and very very useful. It would be great if you could share the slides: I like to print things out and have them around when I'm focused on a task.

[panorama_mastering]

This is incredible! Thank you for sharing with such granularity!

[emildragomirescu]

I have been following your posts and articles for quite a while now Sree, and this is by far the best and most detailed explanation of Loudness that one can find around. Yes, it is mainly made for Broadcast applications, but you also touch about its implications in Music and Streaming, so this video is GOLD!! Amazing presentation Sree!!

[wanote]

This was riveting, I really mean it! Thank you so much!

[SanthoshSasi]

This is so comprehensive and throws light on many things. Can't thank you enough ❤❤

[stan]

It's now, after years of reading and viewing, I get it in the right way what makes the difference between LKFS and LUFS. Thank you

[gokulv.k.]

Hi sir, It's really amazing to see Industry specialists like you, spending time to share some extremely useful contents, in a highly professional way to the others... Thanks a lot❤️

[dev-ragz]

After a lot of Practicals, back to Theory. Thank You Brother. <3

[ga]

Super useful content! So much information!

[StelloDoussis]

Amazing video and effort! Much appreciated, so good!

[qzxewdy]

This is excellent!Thank you for sharing!

[LarryThrasher]

Great! Thanks so much for posting! Love it!

[faridguellai]

thanks it"s full. thanks to spend so much time for this video 🙏

[castergomez]

Thank you very much ❤️. You’re so helpful🙏

[alnishada]

Thank you for making us <3 ..very informative

[prasadwaglekarWAGGY]

Good Presentation and love quality content, keep Posting such informative video❤❤❤

[davidmamusic]

Hey, guys!
I created some finished masters right from within an arrangement in Studio One, via the master fader.
For peak mastering, I used Waves' L3 set to -0.2db.
Now, I opened the file in a separate mastering window, for analysis and comparison with other tracks. Here, the maximum true peaks is around +0.8.
With current recommendations for streaming services to master for -1db TP, what can I do to achieve that? Can I just lower my track's total volume by -1.8db?
Thanks! I'm a bit in a hurry so I'd appreciate your help a lot!

[alejandravillarroel]

Help! Does measuring loudness in LFUS or LKFS affect the true peak results? If I set different targets of loudness would this affect my TP?

[crackeddnutt]

Educational videos don't get vews😭😭😭