The pictures on your wall are vibrating in response and sympathy to your room's 3 primary resonate frequencies being excited or over pressurized
Every room has 3 primary resonate frequencies based on the room's physical dimensions between the parallel walls for it's height .. width and length
When excessive pressure builds up at these specific frequencies the wall or walls will vibrate shaking your pictures along with other items placed in your room such as a drinking glasses or pictures placed on a table or shelf
Your room operates in two completely different states or conditions above and below the rooms transition point also known as the Schroder frequency
Above your room's transition point the frequencies coming from your speakers act as RAYs or BEAMs of LIGHT and project from your speakers in a straight line until they come into contact with a solid object ... there they are reflected
The frequencies above the transition point behave this way because their length peak to peak physically fits with in the room's dimensions
Frequencies below the room's transition point are to long peak to peak and WILL NOT physically fit within the rooms dimension so instead of behaving like RAYS they pressurize the room instead of bouncing around it
Lets say for sake of argument that your room was 7x12x18 ... your room's 3 primary resonate frequencies would be 80hz x 47hz x 31hz based on those dimensions ... anytime your system generated one of these frequencies or notes it would excite the corresponding wall based on the room's dimension and primary resonate frequency point
You have two issues to deal with ... the vibrating pictures can be reduced by employing a 3 channel parametric EQ ... here you would first identify the primary resonate room frequencies and reduce the excessive pressure build up by placing a cut at that frequency ... this would reduce the energy at that frequency and reduce wall vibrations and lessen the picture rattling
The brightness could be caused by a number of things including your equipment make up ... but if you move the pictures out of the first reflection point of the speakers ... you may be able to reduce some of the brightness
Don't forget in addition to the side wall first reflection points (which most are aware of ) you also have first reflection points at the back wall .. front wall and ceiling and floor
As I doubt you have any pictures placed or hanging on the ceiling or floor I would look to relocate the pictures on the side wall back wall and front wall from the speaker's first reflection point
The problem is a bit more complicated and not quite as clean and clear cut as I've presented it ... there is a ZONE of TRANSITION that is between the Schroder Frequency where the frequencies begin to transition between being RAYs to PRESSURIZING the room that is very tricky Zone to deal with ... also Echo Slap parallel to speakers and seating position between the two parallel side walls and also front and back walls should not have pictures placed at that point
Understanding how and why your room behaves is the first step in trying to correct the problems cause d by it
Enter your text ...
