Has anyone played around with LKFS or LUFS-based "Loudness Compression"?
This would be a really handy thing to have for anyone who creates audio for broadcast TV or Radio, or movie scores, etc.
When people grab a compressor, this is what we mostly want. However, in my experience, most compressors are peak-level compressors.
Thanks for any leads/pointers.
Frankly I had to ask Wikipedia what LKFS and LUFS is. They are loudness standards, they don't indicate compression method.
Here's a peculiar method which uses detection of instantaneous amplitudes instead of peak sample values:
http://www.katjaas.nl/compander/compander.html
From an engineer's viewpoint this approach is highly debatable and you
wouldn't use it for all purposes. But it reacts super fast to transients. I use it on acoustic input in live performance.
Katja
On Wed, Mar 16, 2016 at 7:51 AM, William Huston williamahuston@gmail.com wrote:
Has anyone played around with LKFS or LUFS-based "Loudness Compression"?
This would be a really handy thing to have for anyone who creates audio for broadcast TV or Radio, or movie scores, etc.
When people grab a compressor, this is what we mostly want. However, in my experience, most compressors are peak-level compressors.
Thanks for any leads/pointers.
--
May you, and all beings be happy and free from suffering :) -- ancient Buddhist Prayer (Metta)
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Thanks Katja.
I did not intend to imply a particular compression method.
I was only asking if anyone has created a compressor in Pd with the goal of limiting based on Average Loudness rather than Peak Gain.
I don't really know how it works, except to guess it is related to Fletcher–Munson curves.
I want to get into broadcast more. A LKFS or LUFS external (meter and compressor) would be very useful.
Limiting based on Loudness is becoming both a US and EUR broadcast standard, yet there aren't many tools out there, it seems.
On Wed, Mar 16, 2016 at 5:01 AM, katja katjavetter@gmail.com wrote:
Frankly I had to ask Wikipedia what LKFS and LUFS is. They are loudness standards, they don't indicate compression method.
Here's a peculiar method which uses detection of instantaneous amplitudes instead of peak sample values:
http://www.katjaas.nl/compander/compander.html
From an engineer's viewpoint this approach is highly debatable and you wouldn't use it for all purposes. But it reacts super fast to transients. I use it on acoustic input in live performance.
Katja
On Wed, Mar 16, 2016 at 7:51 AM, William Huston williamahuston@gmail.com wrote:
Has anyone played around with LKFS or LUFS-based "Loudness Compression"?
This would be a really handy thing to have for anyone who creates audio for broadcast TV or Radio, or movie scores, etc.
When people grab a compressor, this is what we mostly want. However, in my experience, most compressors are peak-level compressors.
Thanks for any leads/pointers.
--
May you, and all beings be happy and free from suffering :) -- ancient Buddhist Prayer (Metta)
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Ah, sorry for my completely irrelevant pointer. Now I understand (after consulting wikipedia again) that you want to compress according to frequency- and sound pressure dependent equal-loudness contours so you can comply with standards about perceived loudness? Seems that this requires multiband RMS detection and weighting.
Katja
On Wed, Mar 16, 2016 at 10:20 AM, William Huston williamahuston@gmail.com wrote:
Thanks Katja.
I did not intend to imply a particular compression method.
I was only asking if anyone has created a compressor in Pd with the goal of limiting based on Average Loudness rather than Peak Gain.
I don't really know how it works, except to guess it is related to Fletcher–Munson curves.
I want to get into broadcast more. A LKFS or LUFS external (meter and compressor) would be very useful.
Limiting based on Loudness is becoming both a US and EUR broadcast standard, yet there aren't many tools out there, it seems.
On Wed, Mar 16, 2016 at 5:01 AM, katja katjavetter@gmail.com wrote:
Frankly I had to ask Wikipedia what LKFS and LUFS is. They are loudness standards, they don't indicate compression method.
Here's a peculiar method which uses detection of instantaneous amplitudes instead of peak sample values:
http://www.katjaas.nl/compander/compander.html
From an engineer's viewpoint this approach is highly debatable and you wouldn't use it for all purposes. But it reacts super fast to transients. I use it on acoustic input in live performance.
Katja
On Wed, Mar 16, 2016 at 7:51 AM, William Huston williamahuston@gmail.com wrote:
Has anyone played around with LKFS or LUFS-based "Loudness Compression"?
This would be a really handy thing to have for anyone who creates audio for broadcast TV or Radio, or movie scores, etc.
When people grab a compressor, this is what we mostly want. However, in my experience, most compressors are peak-level compressors.
Thanks for any leads/pointers.
--
May you, and all beings be happy and free from suffering :) -- ancient Buddhist Prayer (Metta)
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
--
May you, and all beings be happy and free from suffering :) -- ancient Buddhist Prayer (Metta)
-
katja -
William Huston