Re: USB sound cards ("Richard F. Lyon" )


Subject: Re: USB sound cards
From:    "Richard F. Lyon"  <dicklyon@xxxxxxxx>
Date:    Tue, 16 Dec 2014 09:28:20 -0800
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

--001a1134f0d67447e3050a58af0e Content-Type: text/plain; charset=UTF-8 I understand that at the low end of the frequency range, the resonance you guys are talking about is inductive and is damped best by a lower source impedance. But at higher frequencies, esp if there are crossovers and such, there may be other resonances, and impedances that look more capacitive in the relevant region. Source impedance will affect these in different ways, and with higher-order systems the damping factor is perhaps too simple a concept. Nevertheless, my point remains that the source impedance will affect the spectrum of the sound, in possibly complicated ways, and the traditional use of low driving impedance only optimizes one aspect of that, which may not correlate with the benefit that some say they get with added resistance. It's worth looking at more closely. Dick --001a1134f0d67447e3050a58af0e Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div>I understand that at the low end of the frequency ran= ge, the resonance you guys are talking about is inductive and is damped bes= t by a lower source impedance.=C2=A0 But at higher frequencies, esp if ther= e are crossovers and such, there may be other resonances, and impedances th= at look more capacitive in the relevant region.=C2=A0 Source impedance will= affect these in different ways, and with higher-order systems the damping = factor is perhaps too simple a concept.=C2=A0 Nevertheless, my point remain= s that the source impedance will affect the spectrum of the sound, in possi= bly complicated ways, and the traditional use of low driving impedance only= optimizes one aspect of that, which may not correlate with the benefit tha= t some say they get with added resistance.<br><br></div><div>It&#39;s worth= looking at more closely.<br><br>Dick<br><br></div></div> --001a1134f0d67447e3050a58af0e--


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