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--- en:wiki:anhang:anleitungen:the_repeated_stereo_pairs_method [27/09/2016 19:40] – matt
+++ en:wiki:anhang:anleitungen:the_repeated_stereo_pairs_method [28/09/2016 19:19] – [Initialise the Remaining Workspaces] matt
@@ Line 25: / Line 25: @@
 Use the mic alignment tool and measure offsets between the reference channel and each other channel. For example, if you use L as the reference channel then you need to know the delay (in samples) for
-L-R
+  * L-R
-L-C
+  * L-C
-L-SL
+  * L-SL
-L-SR
+  * L-SR
 Record these delays. I recommend recording them permanently and returning the mic to the same position for future measurement sessions.
@@ Line 47: / Line 47: @@
   * apply delay adjustment to XO2R to account for delays found using mic alignment tool
+=== unix (cygwin) script to copy workspaces ===
+An example which copies LR to the 3 fresh workspaces above, run from the parent directory
+<code bash>
+for target in LC LSL LSR
+do
+    mkdir ${target}
+    cp LR/XO*.dbl ${target}/
+    cp LR/Target.dbl ${target}/
+    sed -e "s/\\\LR/\\\\${target}/g;s/\\\LR\\\/\\\\${target}\\\/g" LR/Acourate.ini > ${target}/Acourate.ini
+done
+</code>
+If using shared prefilters (e.g. for manual IIR on the subwoofer) then place these in a separate common directory.
 ===== Measurements =====
@@ Line 78: / Line 93: @@
 For each of LR, LC, LSL, LSR
-Open the workspace
+  * Open the workspace
-Run a log sweep
+  * Run a log sweep
-Run macro 1
+  * Run macro 1
-Run macro 3
+  * Run macro 3
-Compare inverse curves against pulses, run "phase extract" to avoid unnecessary boost at extremities and save phase extracted pulses over the Pulse48Linv/Pulse48Rinv as necessary
+  * Compare inverse curves against pulses, run "phase extract" to avoid unnecessary boost at extremities and save phase extracted pulses over the Pulse48Linv/Pulse48Rinv as necessary
-Iterate over macro 4 & macro 5 until an acceptable result is achieved
+  * Iterate over macro 4 & macro 5 until an acceptable result is achieved (NB: it is advisable to use the same parameters on the reference L channel in every workspace)
-(NB: it is advisable to use the same parameters on the reference L channel in every workspace)
+If there is a non zero delay between XO2L and XO2R (i.e. the mic alignment tool did not report 0 offset)
+  * Load Cor1L and Cor1R, find the peaks, calculate peakoffset = Cor1L-Cor1R
+  * Rotate Cor1R by (Cor1L-Cor1R) samples, save over Cor1R
+  * Rotate Cor2R by (Cor1L-Cor1R) samples, save over Cor2R
+  * Remember to update the Cor wav files if using (e.g. Load Cor1L into slot 1, Cor1R into slot 2, save as stereo wav and overwrite Cor1S)
+  * Remember to repeat for all sample rates if generating filters for multiple sample rates
-If there is a non zero delay between XO2L and XO2R (i.e. the mic alignment tool did not report 0 offset)
+Special note for surround channels…. if you find that there is a markedly different correction applied to the surround channels then it may be better to compare SL to SR rather than SL to L and SR to L. Use your eyes and ears to judge this.
-- Load Cor1L and Cor1R, find the peaks, calculate peakoffset = Cor1L-Cor1R
-- Rotate Cor1R by (Cor1L-Cor1R) samples, save over Cor1R
-- Rotate Cor2R by (Cor1L-Cor1R) samples, save over Cor2R
-- Remember to update the Cor wav files if using (e.g. Load Cor1L into slot 1, Cor1R into slot 2, save as stereo wav and overwrite Cor1S)
-- Remember to repeat for all sample rates if generating filters for multiple sample rates
-Special note for surround channels.... if you find that there is a markedly different correction applied to the surround channels then it may be better to compare SL to SR rather than SL to L and SR to L. Use your eyes and ears to judge this.
 ==== Step 3: Correcting the LFE channel ====