Reply-To: "Kevin Aylward"
From: "Kevin Aylward"
References: <email@example.com> <3DC634B7.C303BC8E@scazon.com>
Subject: Re: Bullshit wins v. science
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Date: Wed, 6 Nov 2002 11:37:33 -0000
NNTP-Posting-Date: Wed, 06 Nov 2002 11:37:40 GMT
"Don Klipstein" wrote in message
> In article , Kevin
> Aylward wrote in part:
> >An asymmetrical speaker as you note here, might well sound different
> >inversion, but then, technically, it is not that inversion that the
> >is detecting, in the sense that there is some mechanism in the ear
> >distinguishing between positive and negative pressure. The sound
> >generated is actually different. An asymmetrical signal might be
> >in one inversion, but not the other. Usually, when one is disusing
> >whether or not certain effects are detectable by the ear, the use of
> >baseline of neutrality is used. That is, amplifiers, and such like
> >being operated in their linear region and power ratings etc.
> One problem here - a lot of loudspeakers have significant
> when power and cone motion are within the ratings. The "limit of
> linearity" for a loudspeaker may merely be some point at which
> with increasing power, rapidly changes from significant to
> And for woofers, this maximum power for "reasonable" linearity varies
> a lot both with frequency and with enclosure design. Midranges and
> tweeters can also have non-linear effects varying with frequency.
It is true that speakers have distortion, maybe in the 1% to 10% at peak
signals, falling off with level, this is very well known. However, I
doubt very much that the audibility of this distortion depends on
polarity. I suspect that any difference, if it can even be detected at
all, will be where an asymmetric signal is either hard clipping on one
side or not, because the speaker is significantly unsymmetrical. Its
matter of simple observation, that swapping the polarity, in general,
with general music signals makes no difference.
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