Markoneswift
Quartz locked n ready to rock
I actually went away and read up on the different Dolby surround technologies as a result of posting in this thread and I learned a few interesting things about the technology.
Center channel ? Battle of bottom shelf ?Sad times
- Thread starter ultumax
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imral3
Enjoy the musics!!
Your head, maybe?
Dolby Pro LogicEdit
Dolby Pro Logic logo
In 1987 the decoding technology was updated and renamed Dolby Pro Logic.
A Pro Logic decoder/processor "unfolds" the sound into the original 4.0 surround—left and right, center, and a single limited frequency-range (7 kHz low-pass filtered[1]) mono rear channel.
A Pro-Logic decoder also uses 'Steering Logic', which drives amplifiers, to raise or lower the output volume of each channel based on the current dominant sound direction. For example, while a mono signal is played, the strong correlation to the center channel triggers the output volume of the left, right and surround channels to be lowered. This increases the channel separation achievable, to around 30 decibels between channels. By careful tuning of the response of the amplifiers, the total amount of signal energy remains constant and is unaffected by the operation of the channel steering. Additionally the response time of the system to changes in sound direction is important as too fast a response results in a twitchy feel, while too slow a response leaves sounds coming from an inappropriate direction.[1]
In addition to 5db of noise processing, the surround channel is slightly delayed, so that any front channel sounds that leak into the surround channel arrive at the listener after the front channels. This takes advantage of the Haas effect - audio that is present in the front speakers but delayed in the surround speakers will have the psychoacoustic effect of emanating from the front of the sound stage.
Dolby Surround and Dolby Pro Logic decoders are similar in principle, as both use matrix technology to extract extra channels from Dolby Stereo stereo-encoded audio. The terms Dolby Stereo, Dolby Surround and Lt/Rt are all used to describe soundtracks that are matrix-encoded using this technique
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So the rear channel is a echo ?? Of surround effects. I just don’t see a non invasive way to wall mount them plus only one corner is free so isn’t have to put them higher .
Prologic is still the way to go even without the rears in proper spot...
I’d have to use different speakers to wall mount them anyway .
Dolby Pro Logic logo
In 1987 the decoding technology was updated and renamed Dolby Pro Logic.
A Pro Logic decoder/processor "unfolds" the sound into the original 4.0 surround—left and right, center, and a single limited frequency-range (7 kHz low-pass filtered[1]) mono rear channel.
A Pro-Logic decoder also uses 'Steering Logic', which drives amplifiers, to raise or lower the output volume of each channel based on the current dominant sound direction. For example, while a mono signal is played, the strong correlation to the center channel triggers the output volume of the left, right and surround channels to be lowered. This increases the channel separation achievable, to around 30 decibels between channels. By careful tuning of the response of the amplifiers, the total amount of signal energy remains constant and is unaffected by the operation of the channel steering. Additionally the response time of the system to changes in sound direction is important as too fast a response results in a twitchy feel, while too slow a response leaves sounds coming from an inappropriate direction.[1]
In addition to 5db of noise processing, the surround channel is slightly delayed, so that any front channel sounds that leak into the surround channel arrive at the listener after the front channels. This takes advantage of the Haas effect - audio that is present in the front speakers but delayed in the surround speakers will have the psychoacoustic effect of emanating from the front of the sound stage.
Dolby Surround and Dolby Pro Logic decoders are similar in principle, as both use matrix technology to extract extra channels from Dolby Stereo stereo-encoded audio. The terms Dolby Stereo, Dolby Surround and Lt/Rt are all used to describe soundtracks that are matrix-encoded using this technique
“””
So the rear channel is a echo ?? Of surround effects. I just don’t see a non invasive way to wall mount them plus only one corner is free so isn’t have to put them higher .
Prologic is still the way to go even without the rears in proper spot...
I’d have to use different speakers to wall mount them anyway .
Last edited:
Markoneswift
Quartz locked n ready to rock
As I said before, and as stated in the Dolby text above - the rear is a single limited-frequency mono channel. If you can't mount a speaker appropriately, don't bother because you're not missing much.
if its mono do i really need to rears, and should is add a rear or two?
prob not worth it then
esp risk angering my mom more,,,
Bill Ferris
Lunatic Member
Dam my mom should not have donated all those stuffed animals of my sisters to goodwill . We’re talking about a lifetime supply warranty on doorstops...
See look doorstops ?for sale on Facebook View attachment 1622449View attachment 1622450View attachment 1622452
You know, ultumax, you really are difficult to follow, most of the time, and more often than not, fail to make any sense, at least to my observations..
You seem to be very disorganized in your thoughts, and communication skills, at least when you communicate here via a computer keyboard !!
You haven`t had any head trauma sometime in your life, have you ?
Markoneswift
Quartz locked n ready to rock
Dolby pro-logic is exactly what I said it was three pages ago.
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