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Richard Owlett
Guest
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 Posted:
Thu Dec 29, 2005 1:16 am Post subject:
OT question Re: Calibrating speakers |
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Michel Rouzic wrote:
| Quote: | I just got a new set of 2.1 speaker [snip]
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and elsewhere in thread reference made to "2.0 speaker".
What is 2.0|2.1 speaker?
PS. Only dumb question is the the one you don't ask. |
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Bob Cain
Guest
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| Posted:
Thu Dec 29, 2005 7:22 am Post subject:
Re: Calibrating speakers |
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Michel Rouzic wrote:
| Quote: | Isn't it a bit complex/delicate to make all of the sound output of your
coputer go through your C program? I'd be curious to know how you can
do such a thing anyways
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A set of tools I've used for Win98SE which only requires a .wav file
containing the convolution kernel's are:
Virtual Audio Cable
http://spider.nrcde.ru/music/software/eng/vac.html
Audio Mulch
http://www.audiomulch.com/
Voxengo Pristine Space
http://www.voxengo.com/
There are also tools for measuring your system's responses as
convolution kernels and for inverting them to do equalization. The
framework is Adobe's Audition sound editor using the Aurora plugins from
Angelo Farina to generate stimuli, analyze recorded results and
calculate inverses for equalization kernels which can be used with the
above tool set.
http://www.ramsete.com/aurora/
For loudspeaker equalization, however, about the best you can do is to
equalize the speaker itself on axis from measurements taken in
hemi-anechoic conditions (out of doors at a distance from reflections.)
If you try to do anything about the room they are in you are doomed.
A compensation at any given point in the room can be disasterous for
other points.
There's a lot of stuff you will have to get under your belt to
understand and utilize these tools. There is a fair bit to DSP.
Bob
--
"Things should be described as simply as possible, but no simpler."
A. Einstein |
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Michel Rouzic
Guest
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| Posted:
Thu Dec 29, 2005 8:20 am Post subject:
Re: Calibrating speakers |
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Bob Cain wrote:
| Quote: | Michel Rouzic wrote:
Isn't it a bit complex/delicate to make all of the sound output of your
coputer go through your C program? I'd be curious to know how you can
do such a thing anyways
A set of tools I've used for Win98SE which only requires a .wav file
containing the convolution kernel's are:
|
sounds good. however, I have little idea on how i'm gonna get to
convolving my system's sound in realtime with a .wav kernel from what I
red on these pages, I'd be very curious to know how you set those apps
up to get to that. I wish I could do my own program to do that, but it
required kernel programming, r
wait, I just looked at the screen shots... Adobe Audition == CoolEdit
Pro?! awesome, I wondered what had happened to that kick ass app
(that's the app I always use for um.. anything). I'll try that plugin
anyways, seems like what I need.
| Quote: | For loudspeaker equalization, however, about the best you can do is to
equalize the speaker itself on axis from measurements taken in
hemi-anechoic conditions (out of doors at a distance from reflections.)
If you try to do anything about the room they are in you are doomed.
A compensation at any given point in the room can be disasterous for
other points.
|
Yeah i'm giving up the idea of compensating reflection. My room is such
a mess, there's hardly any hearable reflection anyways.
For loudspeaker equalization (those that i'll use to record the output
of my 2.1 speaker system), I just set the speakers on top of my bed,
vertically and make them face each other at a distance of about 3
inches (and one plays while the other one records). So far it doesn't
give such bad results, but if you think there's anyway i can improve my
way of recording the output of it... |
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Carlos Moreno
Guest
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| Posted:
Thu Dec 29, 2005 9:15 am Post subject:
Re: Calibrating speakers |
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Michel Rouzic wrote:
| Quote: | Another solution (one I very often use): go buy yourself an
AKG K-501 headphones [...]
hehe, yeah but i'd prefer to calibrate it the way i'm trying, not only
i'll have a way to calibrate it an almost-automated way, but it's also
a good occasion to use my knowledge in DSP and my tools in a usefull
way.
Yeah... But you won't have an AKG K-501 !!! :-P
haha that's right! but i don't have the $100 anyways! (i got cool 50
€ Sony headphones anyways)
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Sony?!!! You're sooooo grounded!!! :-)
What are the speakers, Bose? Radio Shack? ;-)
Carlos
-- |
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Carlos Moreno
Guest
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| Posted:
Fri Dec 30, 2005 1:16 am Post subject:
Re: Calibrating speakers |
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Michel Rouzic wrote:
| Quote: | haha that's right! but i don't have the $100 anyways! (i got cool 50
€ Sony headphones anyways)
Sony?!!! You're sooooo grounded!!! :-)
lol, what does it mean : grounded?
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:-)
The way I understand it (notice that I'm not a native English speaker
either -- I have learned the meaning from observation), it's what
parents typically do to children when they do something wrong, or
disobedient, or insolent, etc. Being grounded typically involves
going to your room and not being allowed to watch TV or to go out to
play with your friends, etc.; or in more severe cases, it could involve
being asked/forced to stand close to a wall/corner facing the wall.
Obviously, I was using it in a humorous way, implying that you had
done something so terrible (imagine, using *Sony* headphones!!) that
you deserved to be punished...
Anyway, enough with the teasing/kidding around... We're already
way off-topic for a DSP newsgroup :-)
Cheers,
Carlos
-- |
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Michel Rouzic
Guest
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| Posted:
Fri Dec 30, 2005 1:16 am Post subject:
Re: Calibrating speakers |
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Carlos Moreno wrote:
| Quote: | Michel Rouzic wrote:
Another solution (one I very often use): go buy yourself an
AKG K-501 headphones [...]
hehe, yeah but i'd prefer to calibrate it the way i'm trying, not only
i'll have a way to calibrate it an almost-automated way, but it's also
a good occasion to use my knowledge in DSP and my tools in a usefull
way.
Yeah... But you won't have an AKG K-501 !!! :-P
haha that's right! but i don't have the $100 anyways! (i got cool 50
€ Sony headphones anyways)
Sony?!!! You're sooooo grounded!!! :-)
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lol, what does it mean : grounded?
| Quote: | What are the speakers, Bose? Radio Shack? ;-)
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um... no brand written on it. they came with some cheap Brandt stereo
(not sure the brand) (i mean for the 2.0 system, the 2.1 system i'm
trying to calibrate is Logitech X-230) |
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