Hi
does anybody
have some experience with
Loudspeaker Lab software
using on LapTops...
I have good results
previously done with
sound blaster card and desk top
but when i try to do measurement with
the same measurement box at lap top
failed...
does anybody
have some experience with
Loudspeaker Lab software
using on LapTops...
I have good results
previously done with
sound blaster card and desk top
but when i try to do measurement with
the same measurement box at lap top
failed...
I don't know loudspeker lab, but I think the problems you are having are due to the sound part of the laptop. For example, some laptops don't have stereo line in sockets, just mono mic. Check the sound implementation on your laptop.
🙂
🙂
One other thing to consider is DUPLEX, can your sound card on the laptop record and playback at the same time? This is often required by measurement programs, infact I would think it necessary.
I will try to upload some new drivers
for the chip set
RealTek ALC 655 (on my laptop)
Realtek AC'97 A3.72 the newest version...
before I go for
probably
Sound blaster external...
for the chip set
RealTek ALC 655 (on my laptop)
Realtek AC'97 A3.72 the newest version...
before I go for
probably
Sound blaster external...
Zoran said:Maybee
the external audio card USB
is solution
sound blaster 2 NX ...
b4 purchasing, check to make sure that it is duplex capable. Additionally, duplex capable is a hardware feature so upgrading software drivers almost certainly will not make the sound card duplex capable if it isn't already.
Im using a cheap audiotrak maya ex5 usb soundcard. Its pretty linear using the line in. you have to get an external preamp though if you do not have th lsplab measurement box.
Cheers
andreas
Cheers
andreas
I found a
usb sound card MAC and PC too
called
iMIC
from griffin technology...
pretty good comments about the sound
but i could not see clear is the device duplex...
27 usd price...
usb sound card MAC and PC too
called
iMIC
from griffin technology...
pretty good comments about the sound
but i could not see clear is the device duplex...
27 usd price...
Zoran said:I found a
usb sound card MAC and PC too
called
iMIC
from griffin technology...
pretty good comments about the sound
but i could not see clear is the device duplex...
27 usd price...
It looks like it is, but to be sure just email griffen and ask..
http://www.griffintechnology.com/contact/
I haven't seen a soundcard yet that wasn't full duplex, even the cheap horrible ones.
You might try to change the setting of the 'Wave Engine Choice' in LspLab.
Measurement - Settings - Hardware - Advanced - Wave Engine Choice and change it from whatever the current setting to the other choice, and try it again.
Also if you download speakerworkshop from www.audua.com there is a wizard to check the sound card capabilities.
Good luck,
Dave
You might try to change the setting of the 'Wave Engine Choice' in LspLab.
Measurement - Settings - Hardware - Advanced - Wave Engine Choice and change it from whatever the current setting to the other choice, and try it again.
Also if you download speakerworkshop from www.audua.com there is a wizard to check the sound card capabilities.
Good luck,
Dave
bzdang said:I haven't seen a soundcard yet that wasn't full duplex, even the cheap horrible ones.
You might try to change the setting of the 'Wave Engine Choice' in LspLab.
Measurement - Settings - Hardware - Advanced - Wave Engine Choice and change it from whatever the current setting to the other choice, and try it again.
Also if you download speakerworkshop from www.audua.com there is a wizard to check the sound card capabilities.
Good luck,
Dave
The one in my compaq laptop is not duplex.
In laptops sometimes I found that the built-in soundcard is very noisy due to interferences of digital signals of the motherboard. In some cases there is a decent stereo line out but only a mono and low quality mic input. An external soundcard is recommended for audio measurements!
Other possible soundcards choices are these:
or:
USB, full-duplex, no driver required, work on Win, Mac and Linux. Based on the Burr-Brown PCM2906 and OPA2353 buffers.
More info here: Purebits.com
Other possible soundcards choices are these:
An externally hosted image should be here but it was not working when we last tested it.
or:
An externally hosted image should be here but it was not working when we last tested it.
USB, full-duplex, no driver required, work on Win, Mac and Linux. Based on the Burr-Brown PCM2906 and OPA2353 buffers.
More info here: Purebits.com
I checked lately
the software...
LS Lab 2.19 and 3 demo ver.
what i found>
first
i upgrade the RealTek drivers to last version 3.72
and something different mix console came out,
splitted output and recording sections.
with mixer console on the screen i was able to monitor what happening...
second
i consult the audua software about the card
get the full duplex in and out...
of course with a proper cableing described more clear then in LS lab...
third
LS Lab 3 demo turning the input line totaly down without checking mute button
even when in prefferences checked not to mute line in at the start...
And do not allow to calibrate the impedance circuit at all.
LS Lab 2.19 does not...
but after instaling the new drivers, before was the same...
before every shot I have to set the levels and that was exosting
but the only solution to control the software which is not remembering the last state
of input and output levels...
I catch some measurements with a someting preety simillar to phase
but impedance was not good at all
expetially in lower part of bandwidth.
calibration was successuful this time.
So I made some amplifier with LM4950 (sound is pretty good by the way...) to lower the output impedance
at the DUT, and recalibrate unfortunatly with same results...
forth
with audua i did not get results which are similar to one should look like...
conclusion
Lap top or my lap top (Amilo D1845) have the duplex line
(audua reported this and I could not measure the phase and imp. curves simmilarelly
to the usual ones...)
So the software is not good or at least not bear in mind lap top users
maybe the programmers can easely bring Loudspeakers to desk top machines or what?
All in all the existing sound card is not from satisfactory quality
I think that is couldnt be compensate...
I am looking for some new external card
funny, all of them I found at the net are only for WINdows
Does some body knows some software for MAC system,
doing the same like LS Lab or Audua?
thanks a lot for the pictures
the software...
LS Lab 2.19 and 3 demo ver.
what i found>
first
i upgrade the RealTek drivers to last version 3.72
and something different mix console came out,
splitted output and recording sections.
with mixer console on the screen i was able to monitor what happening...
second
i consult the audua software about the card
get the full duplex in and out...
of course with a proper cableing described more clear then in LS lab...
third
LS Lab 3 demo turning the input line totaly down without checking mute button
even when in prefferences checked not to mute line in at the start...
And do not allow to calibrate the impedance circuit at all.
LS Lab 2.19 does not...
but after instaling the new drivers, before was the same...
before every shot I have to set the levels and that was exosting
but the only solution to control the software which is not remembering the last state
of input and output levels...
I catch some measurements with a someting preety simillar to phase
but impedance was not good at all
expetially in lower part of bandwidth.
calibration was successuful this time.
So I made some amplifier with LM4950 (sound is pretty good by the way...) to lower the output impedance
at the DUT, and recalibrate unfortunatly with same results...
forth
with audua i did not get results which are similar to one should look like...
conclusion
Lap top or my lap top (Amilo D1845) have the duplex line
(audua reported this and I could not measure the phase and imp. curves simmilarelly
to the usual ones...)
So the software is not good or at least not bear in mind lap top users
maybe the programmers can easely bring Loudspeakers to desk top machines or what?
All in all the existing sound card is not from satisfactory quality
I think that is couldnt be compensate...
I am looking for some new external card
funny, all of them I found at the net are only for WINdows
Does some body knows some software for MAC system,
doing the same like LS Lab or Audua?
thanks a lot for the pictures
Hi Zoran, try out the software from www.audiotester.de, it is shareware that you can evaluate with all functions.
I have enjoyed using it without frustration, and a friend has been using it with success on his laptop, so it might work for you even with internal sound card, and then you can upgrade to one of the many usb audio devices for pc and mac, mainly designed for computer home recording studios. Here is one example...
http://www.artproaudio.com/default.asp?p1=3&p2=0&p_id=28&id=41
Regards,
Dave
I have enjoyed using it without frustration, and a friend has been using it with success on his laptop, so it might work for you even with internal sound card, and then you can upgrade to one of the many usb audio devices for pc and mac, mainly designed for computer home recording studios. Here is one example...
http://www.artproaudio.com/default.asp?p1=3&p2=0&p_id=28&id=41
Regards,
Dave
thanks BZDANG
I shall also try to contact mr Grenader from LS Lab
and ask him to repare the software...
It is a pitty, with old Sounblaster Gold, and old desk top 266MHz PCI have measured very nice, and quiet exact (compared with original datas) datas with LS Lab 2.19...
I shall also try to contact mr Grenader from LS Lab
and ask him to repare the software...
It is a pitty, with old Sounblaster Gold, and old desk top 266MHz PCI have measured very nice, and quiet exact (compared with original datas) datas with LS Lab 2.19...
Does anybodu have the serial for the LS Lab 3,
demo is quiet unusable with a 3 points per octave...
by the way...
demo is quiet unusable with a 3 points per octave...
by the way...
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