Monday, March 23, 2020

AKG D510B repositioning 3D binaural tests with Vicky as listener


See also recent part 1.


Since our ear canals seem to be facings a bit towards the floor it was decided to reposition the 2 gooseneck omni small diaphragm moving coil mics.


The ST-3 table stands were again set on table back to back.


But the goose necks were bend in the opposite to usual direction. So that mics pointed below horizontal. So effectively mic with goosenecks wee hugging each other.


The stands were separated so that the mic membranes were at about 9in distance which seem to be a typical human ear drum distance. Looking at them from a distance it looks like 2 D510-B microphones in 69 position as gooseneck are at contact but mics are facing in opposite direction.


After sufficiently increasing headphone level Vicky was so impressed that she could not distinguish whether the sound was real or trough headphones. After she opened her eyes she was shocked realising that subtle egg percussion was not taking place around her head but around the 2 microphones.


She gave a rating of 10/10 for overall sound quality both on speech, singing, egg shaker percussion around mics, dusting pain, distant glockenspiel. Some kind of hollow (room?) bass sound had also disappeared from her perception.


She commented that the glockenspiel sounds much better when on lap of player rather than when it is standing on the wooden floor.


See also for possibly the first time a binaural microphone was tested:


Sound and Music - S. S. Stevens, F. Warshofsky - Time Life Science Series






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