Barometric pressure, temperature, moon phase?

Perception IS reality. Our sensory perceptions are precisely how we observe reality. The word perception can sometimes be used as a psychological term, but it’s actually not. It’s the same thing as hearing. There’s no difference.

Be it sight, sound, the smell, the touch.
There's something,
Inside that we need so much,
The sight of a touch, or the scent of a sound,Or the strength of an arquebus deep in the ground.
The wonder of flowers, to be covered, and then to burst up,
through tarmack, to the sun again,
Or to fly to the sun without burning a wing,To lie in the meadow and hear the grass sing,
To have all these things in our memories hoard,
And to use them,
To help us,To find...

@dprincipato
You may find http://ielogical.com/Audio/WinterBlues.php interesting and specifically http://ielogical.com/Audio/WinterBlues.php#TheFly for the effect of temperature on speaker XOver

You did not mention the source. LP playback systems are subject to all manner of temperature related foibles: bearing tolerance, lubrication viscosity, cantilever suspension compliance, vinyl plasticity.

Do you note levels at which you play a particular piece?
How repeatable is your level control?

When mixing, we calibrated the playback level to the speakers to ±0.1db. The room was temperature controlled to ±1.0°F. When we were satisfied, we always checked the next day on cold monitors. Mixes made in the heat of summer sounded different even though the room temperature was nearly identical as rooms were not humidity controlled. Line voltage and dirt varies considerably in Los Angeles, so we recorded and mixed late a night when the vagaries were minimized.

Perceptions are NOT reality. They are just perceptions.

Science provides us with zero evidence the entire known universe is anything other than a lot of particles and charges just zinging around all over the place. There is in this world no light, no color, no sound, no heat- and certainly not any hard or soft, good or bad, pleasing or aggravating or anything else. There is no music in this world.

Them’s the facts.

Until, that is, any of these particles or charges interacts with our senses. Then and only then do the patterns of greater and lesser density atmospheric molecules become sound.


In other words, just to hammer the point home, it is not merely the case that there is no other reality than our perceptions. The fact of the matter is our perceptions create reality.

Learn something new every day, pwkmaven2.

Case in point.