Interesting discussions. I would be curious to do the impedance test Richard suggests, to dampen the headphone resonance. But if you consider the setup a simple voltage divider
between source and load impedance, wouldn't you predict the opposite result? That a relatively bigger source resistance RS increases voltage fluctuations across the load impedance ZL (and decreases the overall voltage).
VL/VS = ZL/(ZL+RS) The electroacoustic transfer function from V to Pa is unchanged. The situation is different if you have a current source VL/IS = ZL*RS/(ZL+RS) I guess, in this case, you would aim for just one but either one of ZL and RS to be large relative to the other. Best, Anders From: AUDITORY - Research in Auditory Perception [AUDITORY@xxxxxxxxxxxxxxx] on behalf of Richard F. Lyon [dicklyon@xxxxxxx]
Sent: Saturday, December 13, 2014 7:09 AM To: AUDITORY@xxxxxxxxxxxxxxx Subject: Re: USB sound cards It seems not unlikely that headphones (or speakers) might have some reactive elements and resonances, such that some added resistance in the driving circuit would lead to higher damping and a more even response. Someone should do a test, starting
with impedance measurements of various headphones to see if they have identifiable resonances. It might turn out that adding resistance is a good thing, for scientific perceptual experiments or otherwise. I wouldn't be surprised either way.
Dick On Fri, Dec 12, 2014 at 3:36 PM, Steve Beet
<stevebeet@xxxxxxxxx> wrote:
This may be a red herring, but I've seen some self-proclaimed "audiophile" |