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05-31-2013 Post does not mapped to Knowledge Tree
scooter
Posts 161
Joined on 07-17-2008
Post #: 1
Post ID: 19412
Reply to: 19412
Graphene for Audio
fiogf49gjkf0d
See link below for some marketing hype relating to the audio potential for graphene. Somewhat interesting title given the mediocre performance of modern (all) headphones. But new technologies always hold some future hope: 
http://www.technologyreview.com/view/512496/first-graphene-audio-speaker-easily-outperforms-traditional-designs/
05-31-2013 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,797
Joined on 10-12-2006
Post #: 2
Post ID: 19413
Reply to: 19412
20 Hz from "5 mm Diameter"???
fiogf49gjkf0d

Any ideas about what sort of weight and/or strength/ and/or damping advantages over previous diaphragm materials we are talking about?  Of course they would need larger diaphragms and significant audible results before I would agree that this material outperforms something else.

Headphones -  as a genre -  are something else again.  I'm hopeful but not at all convinced that lighter diaphragm materials will solve the major problems with headphones.

Best regards,
Paul
05-31-2013 Post does not mapped to Knowledge Tree
N-set
Warsaw, Poland
Posts 642
Joined on 01-07-2006
Post #: 3
Post ID: 19414
Reply to: 19412
ArXiv!
fiogf49gjkf0d
Wow! I had no idea such things are now published on arXiv! It has grown a lot from only fundamental physics.
Will read the paper, thanks scooter


Cheers,
Jarek
05-31-2013 Post does not mapped to Knowledge Tree
decoud
United Kingdom
Posts 247
Joined on 03-01-2008
Post #: 4
Post ID: 19415
Reply to: 19414
Odd methodology
fiogf49gjkf0d
The odd thing about the paper is that they do not try to show their initial design could actually be better than the commercial offering. They could have improved the measurement of their device or else exposed the Sennheiser diaphragm and measured its velocity with LDV. It is not going to be cheaper, so it has to be better... 
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