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A Windows 7 Measurement Rig
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<blockquote data-quote="Curtis H List (Too Tall)" data-source="post: 23971" data-attributes="member: 160"><p>Re: A Windows 7 Measurement Rig</p><p></p><p></p><p> </p><p>The program itself runs great on it. I have had some issues figuring out the win7 mixer.</p><p></p><p>Back when we had windows3.1 or perhaps the next OS there has been a file named snd32 or something like that.</p><p>"The Windows Mixer" was on every OS till VISTA.</p><p></p><p>One of the prominent features of Praxis was that it could measure absolute SPL, not just relative. </p><p>It had an outboard interface through which all input and output went through feeding the soundcard.</p><p></p><p>After the program was installed you went through a calibration run which gave you the best dynamic range and signal to noise your soundcard could produce. It memorized the mixer settings playback and record and it was ready to make absolute measurements as soon as you had a calibrated mic.</p><p></p><p>This was not the typical one of two frequencies. It came up with a deviation file at about 300 points for both frequency response magnitude and phase.</p><p>Note: Kin Giarden makes the calibrated microphones you can buy along with Praxis.</p><p>You can send him your mic and he will calibrate it for an inexpensive price.</p><p></p><p>Anyway with MS changing the mixer you now have to write down the number and set the mixer control by hand every time you boot the program or at least look at the fader. </p><p>The way win7 works, every time you open any program that has audio going through it (FireFox?) it gives you another slider for that “source”.</p><p>Often the Praxis fader is still set at the same place you wrote down during calibration unless you changed it for some reason.</p><p>Sometimes it screws up, sometimes I screw up.</p><p>Sometimes it will not make a fader for Praxis when I boot the program. I have to make a measurement and then it will show the Praxis fader.</p><p></p><p>NOTE: With the new security protocols windows does not like you to put anything in the Programs/Praxis root folder. It does not like to see anything change there.</p><p>So when you install Praxis you have the Praxis in the root files and another Praxis folder in users/public where Windows does not care if the contents change.</p><p>Do NOT Fight this!</p><p>I think I screwed up trying to fight that.</p><p></p><p>In the end I have winXP as dual boot on all my computers for Praxis and LspCADv6 Pro</p><p></p><p>I had some trouble with Praxis or Yahoo Messenger finding the record mixer. Win7 did an update and it went away.</p></blockquote><p></p>
[QUOTE="Curtis H List (Too Tall), post: 23971, member: 160"] Re: A Windows 7 Measurement Rig The program itself runs great on it. I have had some issues figuring out the win7 mixer. Back when we had windows3.1 or perhaps the next OS there has been a file named snd32 or something like that. "The Windows Mixer" was on every OS till VISTA. One of the prominent features of Praxis was that it could measure absolute SPL, not just relative. It had an outboard interface through which all input and output went through feeding the soundcard. After the program was installed you went through a calibration run which gave you the best dynamic range and signal to noise your soundcard could produce. It memorized the mixer settings playback and record and it was ready to make absolute measurements as soon as you had a calibrated mic. This was not the typical one of two frequencies. It came up with a deviation file at about 300 points for both frequency response magnitude and phase. Note: Kin Giarden makes the calibrated microphones you can buy along with Praxis. You can send him your mic and he will calibrate it for an inexpensive price. Anyway with MS changing the mixer you now have to write down the number and set the mixer control by hand every time you boot the program or at least look at the fader. The way win7 works, every time you open any program that has audio going through it (FireFox?) it gives you another slider for that “source”. Often the Praxis fader is still set at the same place you wrote down during calibration unless you changed it for some reason. Sometimes it screws up, sometimes I screw up. Sometimes it will not make a fader for Praxis when I boot the program. I have to make a measurement and then it will show the Praxis fader. NOTE: With the new security protocols windows does not like you to put anything in the Programs/Praxis root folder. It does not like to see anything change there. So when you install Praxis you have the Praxis in the root files and another Praxis folder in users/public where Windows does not care if the contents change. Do NOT Fight this! I think I screwed up trying to fight that. In the end I have winXP as dual boot on all my computers for Praxis and LspCADv6 Pro I had some trouble with Praxis or Yahoo Messenger finding the record mixer. Win7 did an update and it went away. [/QUOTE]
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