Originally Posted by Jon AA
Could you describe in what ways it was configurable? I'm having little luck finding out anything about it. I'm pretty happy with Auromatic for music, but I'm always open to finding something better.
Sure. First is that you have 2 high level choices (for Music): Logic7 Music and Logic7 Music Surround.
Logic7 Music will do front steering of sources, but you have a choice of off and 3 other modes. What this does is allow you to control say how much sound from a source in the middle of the stereo field is steered to the center channel.
You also have control of what they call sound stage which can be front, neutral and rear. This as far as I can tell controls the relative levels of the front vs surround/rear channels.
So if you want a more upfront sound choose front and if you want a more immersive, feeling like you are farther from the stage, choose rear.
In practice, I find this useful as different recordings sound better depending on how much out of phase (ambiance) there is.
You can also choose how much high frequency rolloff there is in the surrounds. You can choose from none to down to 500Hz. The default is 7Khz and I rarely adjust this. This is to prevent too much high frequency energy in the surrounds to distract from the main channels.
You can control the rear speaker delay offset, so you can delay the rear by up to 30 msecs. This is also to prevent the sound in the rears from being too prominent.
You can also set the levels of the side, rear, center and sub speakers.
Logic7 Music Surround is similar to Logic7 Music (you have essentially the same options) but it will (as I understand it) not process the 2 front channels (as an option).
Both modes extract ambiance (out of phase signals) and delay them and put them in the side/rear speakers for spacial immersion.
That I'm sure is a very crude high level description and the devil is in the details, where I think Logic7 shines.
Logic7 Music Surround I like better with acoustic jazz and classical recordings and Logic7 music for Rock/pop multitrack type recordings. There is also 5.1 versions for Logic7 Music and a separate Logic7 Film mode.
It also has a Logic7 mono mode for mono sources which actually can help add a little ambiance to mono sources.
These algorithms were developed by Dr. David Griesinger who pioneered digital reverb in the 70's and who has devoted his professional life to understanding spacial immersion.
edited to add at least a little readability.