Hi, Quote: Perceptional coherence or perceptional cross-correlation - whole books have been written on that one.  The interesting thing is how easily and quickly the visual cues create a percepton much more focused than the nebulous 'guessed' perception based on experience.  A secondary...

Hi,   Quote: Yes, I was aware of the practice, worse, sometimes I swear that they have just about closed the lid - much more closed than half stick  I remember when I first heard the Keith Jarret album The Köln Concert, I could hardly credit that it was a grand piano, sounded half way...

Quote: Hi, Might I add a little here.  As has already been explained, the 3D image you perceive is a learnt response.  There are a few inferences that can be drawn from this situation.    1.  In order to get a good perception of soundstage the brain must have a 'reference'...

Hi,   The material in the cup slows down the speed of sound compared to the speed of sound in the open air, thus making the cup appear bigger,  This link will take you to a page with some illustrative graphs.  As you can see the change is frequency dependent and is altered by the density of...

Hi arnaud, That is looking quite promising, it will be interesting to see if the FR is more affected by the transducer or the earcup geometry and surfaces. Is it possible to do a CSD sweep on the simulation with the software?  One thing I always tried to do was get some performance data on a...

Hi,   I always preferred tangential trackers over radial trackers.  Still have a B&O 4002 and MCC20CL (one of the best Moving Magnet [if you can call it that] cartridges at the time IMO -  outstanding on voice) and a matched pair of Pioneer PL1000As, modified for remote control.    I was...

Hi arnaud,   Only electrostatics have the shift in resonance.    No way to alter the compliance of a magnetic driver via external means.  Of course,you could attach mass to the cone.  I had some JBL 2231 15 inch drivers (similar to the more common 2235 model [interchangeable cones]). ...

Hi Arnaud,   Hmm, There is a way to determining the compliance of the membrane.  The primary resonant mode is determined by the mass and total compliance of the system when energised.  The total compliance is the sum of the mechanical compliance (under tension) and the negative compliance...

Hi arnaud,   How far are you going to take this simulation?  For instance are you going to include:   real values of compliance of mylar minus the negative compliance due to biasing, correct density,  etc.? - if so I will try to the find out the correct values.   the acoustic...