THX Video Calibration Training - London

Phil Hinton

Editor
Staff member
AVForums hosted the first UK THX video calibration training between June 14th and 16th at JVC house in London. Over 30 students attended the level 1 day with 24 doing all three days. The event was sponsored by JVC, Panasonic, Samsung, LG and Lumagen. The students had use of the latest Plasma and LCD LED TVs, including 3D and Projectors from JVC.


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daverob

Active Member
Many thanks Phil (and team) for the presentation. However, PLEASE turn off the background "music" during demonstrations. There are times when it is so difficult to hear what the presenters and participants are saying. Many thanks, Dave
 

namuk

Distinguished Member
PLEASE turn off the background "music" during demonstrations. There are times when it is so difficult to hear what the presenters and participants are saying. Many thanks, Dave

no background sound issues here mate, you must be running some sort of EQ to boost sound.

i would check on that :)
 

daverob

Active Member
no background sound issues here mate, you must be running some sort of EQ to boost sound.

i would check on that :)

Hi Namuk - thanks for the info - have checked all settings -no EQ.
But the sounds are still in the background of not only this latest presentation but other productions!!
 

namuk

Distinguished Member
Hi Namuk - thanks for the info - have checked all settings -no EQ.
But the sounds are still in the background of not only this latest presentation but other productions!!

well something is boosting your background noise somewhere, any of theses productions are fine at my end , phil does the vid productions if there was an issue the vids would not be posted. not sure what your connected to but if amp check the amp sound field settings or what mode the sound card is on.
 

daverob

Active Member
well something is boosting your background noise somewhere, any of theses productions are fine at my end , phil does the vid productions if there was an issue the vids would not be posted. not sure what your connected to but if amp check the amp sound field settings or what mode the sound card is on.

Not playing the demos via my Hi Fi system, but on my laptop!! Thanks for replying
 

Phil Hinton

Editor
Staff member
A lot of care and attention go into not only the picture quality and editing, but also the sound mix of our videos. The music on this track is set at -30db in the mix with the interviews at -3db peak and sound effects (background ambience) at -22db. Great care is taken with the sound, much to the frustration of Stuart who would like me to spend less time in post :D.

The sound has been checked not only on our editing system which uses Genelec near fields (from a pro quality sound card), but also on my laptops (PC and Apple) and work horse PC with cheap speakers to check audio quality so interviews can be heard and are intelligible at all listening volumes. I do about 5 or 6 passes of the audio only mix to check levels are the same all the way through in the mix (This includes frequencies that while low may affect sound quality). Obviously now and again for creative reasons the audio mix will feature louder music, but never over the top of dialogue so it is unintelligible. It might surprise you to learn that there are 9 audio tracks used in this video alone, much of which goes un-noticed (hopefully) so interview cuts etc. all blend together with no obvious switches between interviewees heard (background noise changes between interviews which is picked up when shooting, this is reduced where possible and replaced with a consistant ambient track). If it goes unheard then I have done a good job. Music is usually last to be mixed in.

I have found no issues with this video or others where there is a music track used. We do our best to have product that works on every conceivable playback device and will continue to use quality control in the same way.

The only exception to this is when we are on the road and publishing videos quickly in the field, such as CES where we are editing in a hotel room on laptops. In these cases there may be some audio issues that escape our QC and I certainly don't spend any time on the mix as I do with normal videos.

Thanks for the feedback it has been noted.
 

daverob

Active Member
A lot of care and attention go into not only the picture quality and editing, but also the sound mix of our videos. The music on this track is set at -30db in the mix with the interviews at -3db peak and sound effects (background ambience) at -22db. Great care is taken with the sound, much to the frustration of Stuart who would like me to spend less time in post :D.

The sound has been checked not only on our editing system which uses Genelec near fields (from a pro quality sound card), but also on my laptops (PC and Apple) and work horse PC with cheap speakers to check audio quality so interviews can be heard and are intelligible at all listening volumes. I do about 5 or 6 passes of the audio only mix to check levels are the same all the way through in the mix (This includes frequencies that while low may affect sound quality). Obviously now and again for creative reasons the audio mix will feature louder music, but never over the top of dialogue so it is unintelligible. It might surprise you to learn that there are 9 audio tracks used in this video alone, much of which goes un-noticed (hopefully) so interview cuts etc. all blend together with no obvious switches between interviewees heard (background noise changes between interviews which is picked up when shooting, this is reduced where possible and replaced with a consistant ambient track). If it goes unheard then I have done a good job. Music is usually last to be mixed in.

I have found no issues with this video or others where there is a music track used. We do our best to have product that works on every conceivable playback device and will continue to use quality control in the same way.

The only exception to this is when we are on the road and publishing videos quickly in the field, such as CES where we are editing in a hotel room on laptops. In these cases there may be some audio issues that escape our QC and I certainly don't spend any time on the mix as I do with normal videos.

Thanks for the feedback it has been noted.

Phil, very many thanks for your time in explaining to me the care and attention to details you give to each and every production you and your team are involved in - I appreciate it very much. Continued success in all you do.:smashin:
 

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