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And lo on Mon, 31 Mar 2008 20:28:38 +0100, Orchid XP v8 <voi### [at] dev null>
did spake, saying:
> Nicolas Alvarez wrote:
>>> Is it possible to buy a laptop that has built-in speakers which aren't
>>> a joke?
>> Yes, a Mac.
>
> Hell, for that price it should also make me a cup of tea when I wake up
> in the morning! :-S
That would be the iPhone's job http://tinyurl.com/2r7phs
--
Phil Cook
--
I once tried to be apathetic, but I just couldn't be bothered
http://flipc.blogspot.com
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>> Is there some theoretical reason why the speakers in a laptop can't
>> produce high-quality sound?
>
> Yes, to produce hi-fi quality sound you need a speaker cone bigger than
> most laptops and a very carefully designed enclosure to produce a nice
> response.
Right. That sounds more authoritative coming from an engineer...
Actually, as I've mentioned, I just bought some external speakers, and
they produce an impressive amount of bass. But only if your head is less
than a few feet away. The sound seems to drop off very rapidly with
distance - an effect my 8-inch Warfdales don't seem to have.
I notice that these speaker units are *very* heavy for such tiny
objects. Is this significant?
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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"Orchid XP v8" <voi### [at] devnull> wrote in message
news:47f14290$1@news.povray.org...
> Gail Shaw wrote:
>
> > Well I am talking about a fairly cheap TV and a very expensive laptop
that
> > was designed as a media center, so that may even things.
> > I'm not sure about the low frequencies. It doesn't shake the floor like
the
> > desktop's speaker system does
>
> Acid test: Play, oh, *any* track that Enya has ever recorded [that
> features vocals], and tell me if it sounds like a women singing or like
> some sand rattling inside a coffee grinder. ;-)
"Cold is the cry that rings from this distant shore"
I have Enya's Exile playing at the moment and, with the laptop's volume at
max I can clearly hear the words 2 rooms away.
Note that this is a 17" laptop and the speaker runs across the entire width
of the laptop, above the keyboard. It's not 2 tiny little speakers set at
the bottom.
It's not going to rival the desktop's speaker system, or the new TV for
volume, both which can be heard 2 floors down at medium volume.
"My guide the morning star..."
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On Tue, 01 Apr 2008 10:48:38 +0100, Invisible <voi### [at] devnull> wrote:
> The sound seems to drop off very rapidly with
>distance - an effect my 8-inch Warfdales don't seem to have.
>
You have to take into account the power output of the amplifier (PC or
stereo) and the sensitivity of the speakers. Google it.
>I notice that these speaker units are *very* heavy for such tiny
>objects. Is this significant?
Yes the density of the speaker enclosures enhances the baffling in
modern designs.
--
Regards
Stephen
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Gail Shaw wrote:
> "Cold is the cry that rings from this distant shore"
>
> I have Enya's Exile playing at the moment and, with the laptop's volume at
> max I can clearly hear the words 2 rooms away.
> Note that this is a 17" laptop and the speaker runs across the entire width
> of the laptop, above the keyboard. It's not 2 tiny little speakers set at
> the bottom.
>
> It's not going to rival the desktop's speaker system, or the new TV for
> volume, both which can be heard 2 floors down at medium volume.
>
> "My guide the morning star..."
Mmm, nice...
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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>> The sound seems to drop off very rapidly with
>> distance - an effect my 8-inch Warfdales don't seem to have.
>
> You have to take into account the power output of the amplifier (PC or
> stereo) and the sensitivity of the speakers. Google it.
I think you'll find that "sensitivity" is a measure of how much sonic
power a speaker generates for a given amount of electrical power. It has
nothing to do with distance dissapation...
>> I notice that these speaker units are *very* heavy for such tiny
>> objects. Is this significant?
>
> Yes the density of the speaker enclosures enhances the baffling in
> modern designs.
I was thinking more that being heavy allows the speakers to generate low
frequencies more easily. (Otherwise the driver might end up just
wiggling the cone one way and the casing the other way, and not
producing much sound.)
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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> I was thinking more that being heavy allows the speakers to generate low
> frequencies more easily. (Otherwise the driver might end up just wiggling
> the cone one way and the casing the other way, and not producing much
> sound.)
Yes, the cabinet should be as stiff as possible (unless you have designed
some uber leet flexible cabinet that does very clever stuff). But the
weight you are feeling is probably just the magnet and coil inside the
speaker driver. Do the speakers also contain a PSU and amp? That would
also add significantly to the weight of PC speakers.
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>> I was thinking more that being heavy allows the speakers to generate
>> low frequencies more easily. (Otherwise the driver might end up just
>> wiggling the cone one way and the casing the other way, and not
>> producing much sound.)
>
> Yes, the cabinet should be as stiff as possible (unless you have
> designed some uber leet flexible cabinet that does very clever stuff).
> But the weight you are feeling is probably just the magnet and coil
> inside the speaker driver. Do the speakers also contain a PSU and amp?
> That would also add significantly to the weight of PC speakers.
No. The speakers are USB-powered, so no transformer.
(In fact, the device you plug into the USB port is actually an external
sound card with built-in amplifier, and the [detechable] speakers
themselves are passive.)
The speaker housings appear to be metal, which is unusual. (Mind you,
they claim to be magnetically shielded...)
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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On Tue, 01 Apr 2008 13:43:22 +0100, Invisible <voi### [at] devnull> wrote:
>>> The sound seems to drop off very rapidly with
>>> distance - an effect my 8-inch Warfdales don't seem to have.
>>
>> You have to take into account the power output of the amplifier (PC or
>> stereo) and the sensitivity of the speakers. Google it.
>
>I think you'll find that "sensitivity" is a measure of how much sonic
>power a speaker generates for a given amount of electrical power. It has
>nothing to do with distance dissapation...
>
Like most things yes and no :) True "sensitivity" is a measure of how
much sonic power a speaker generates for a given amount of electrical
power but loudness is directly related to acoustic power. Therefore
the higher the sensitivity the more and thus louder the volume from
the speaker. Also below about 10 KHz the lower the frequency the less
loud it will sound to our ears. It then reverses for about 500Hz drops
off to about 12 KHz then increases again. So for the same power bass
notes will not seem to travel as far as higher ones. So why do
foghorns use low frequency? I hear you ask. Well that is because low
frequency are audible to human ears farther than higher pitched sounds
they just require more power to produce them. Confused yet? It gets
worse when you consider feedback from the inside part of the speaker.
We would ideally like an infinite baffle but that is very unlikely in
real life never mind a laptop.
>>> I notice that these speaker units are *very* heavy for such tiny
>>> objects. Is this significant?
>>
>> Yes the density of the speaker enclosures enhances the baffling in
>> modern designs.
>
>I was thinking more that being heavy allows the speakers to generate low
>frequencies more easily. (Otherwise the driver might end up just
>wiggling the cone one way and the casing the other way, and not
>producing much sound.)
In a good speaker design the cone is quite well isolated from the
case. It is the internal pressure that is the problem. And Yes the
heaver the box the better it sounds.
The same goes for speaker stands.
--
Regards
Stephen
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> That would be the iPhone's job http://tinyurl.com/2r7phs
What the...
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