en:wiki:anhang:anleitungen:linearisierung_von_frequenzweichen
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en:wiki:anhang:anleitungen:linearisierung_von_frequenzweichen [09/08/2016 18:36] – hamish | en:wiki:anhang:anleitungen:linearisierung_von_frequenzweichen [09/08/2016 22:41] – hamish | ||
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+ | ====== Linearizing digital crossovers ====== | ||
+ | The speaker enclosure and drivers are subject to variations in production, which may cause an imperfect match between the left and right speaker and thus lower [[: | ||
- | **This page is not fully translated, yet. Please help completing | + | __At this step we are not trying to correct |
- | //(remove this paragraph once the translation is finished)// | + | |
- | ====== Linearisierung digitaler Frequenzweichen ====== | + | |
- | \\ | + | We need to use a suitable |
- | Das Lautsprecher-Gehäuse und -Chassis unterliegt Produktionsschwankungen, | + | |
- | \\ | + | |
- | __Man muss sich vergegenwärtigen, | + | |
- | \\ | + | |
- | Um diese Bedingung zu erfüllen kann man z.B. einen geeigneten [[: | + | |
- | \\ | + | |
- | Es kann keine generelle Vorgehensweise empfohlen werden, dazu sind die Vorgänge in den unterschiedlichen Hörräumen zu komplex. Die Meinungen wiedersprechen sich auch, ob nun unterhalb 200Hz bei Messungen im Hörraum linearisiert werden soll oder darf. Deshalb ist es am zielführendsten, | + | |
- | Linearization digital crossovers | + | It is hard to make general recommendations as the properties of the sound field in different listening rooms are too complex. Opinions are contradictory as to whether it is helpful to linearize woofers below 200Hz (assuming one doesn' |
- | The speaker enclosure chassis and is subject to variations in production, which results in a decreased pair equality of the speaker and thus lower IACC values. However, digital frequency oaks can be in any Acourate designet and changed. It is therefore possible each chassis or the way a speaker to create a custom crossover. These are then linearized on the properties of individual system from chassis and speaker enclosure. | + | ===== Quick Guide: ===== |
- | We must remember that should be taken in this step only on the system chassis and speaker enclosure, but should not take place a complete correction. | + | Load [[: |
- | + | Curve 1 using [[: | |
- | can be, for example, to meet this condition use a suitable | + | Mark the range to be linearized\\ |
- | + | [[: | |
- | It can be recommended no general approach to the operations in different listening rooms are too complex. The opinions are contradictory and whether to be linearized below 200Hz for measurements in the listening room now or must. Therefore it is zielführendsten if you tried the various options for creating and editing | + | [[: |
+ | Load original crossover | ||
+ | [[: | ||
+ | delete content from Curve 2, select curve 6\\ | ||
+ | [[: | ||
+ | [[: | ||
+ | Save Curve 2 as new XO … ..dbl file | ||
+ | **Detailed Instructions: | ||
\\ | \\ | ||
- | Quick Guide: | + | {{:bilder_anleitungen: |
- | Load pulse response in Curve 1\\ | + | ===== ===== |
- | Curve 1 windows FDW> Curve 2\\ | + | |
- | Mark to be linearized range\\ | + | |
- | Phase Extraction to highlight area> Apply Curve 3\\ | + | |
- | Amplitude inversion> | + | |
- | Load original crossover at Turn 5\\ | + | |
- | Convolution Inverse with original crossover\\ | + | |
- | delete content from Kuve 2, select curve 6\\ | + | |
- | Cut 'N Window of curve 6 in curve 2\\ | + | |
- | Normailization on curve 2 apply (Individual Gain)\\ | + | |
- | Save graph 2 as new XO ... ..dbl file | + | |
- | Detailed Instructions: | + | ===== ===== |
- | 1. First, an impulse response has to be created by above-mentioned aspects. This load in curve. 1 | + | ===== ===== |
- | 2. Select the tab TD-function> | + | ==== ==== |
- | 3. In the now windowed 2. curve of the field is marked with the two mouse buttons, one wants to use for the linearization of the crossover. This may be the region having particularly large fluctuations or you can cover the full range of the crossover. At the beginning and end of the curve, however, some distance should be allowed, since these areas are affected | + | 1. First, an impulse response has to be created |
- | + | ||
- | 4. In the right pane of the amplitude window, the start and at the end frequency MarkR the selected range is displayed in Markl, here 639Hz and 19396Hz. | + | |
- | + | ||
- | 5. To cancel the curve outside of the marked area TD-Functions is applied> Phase Extraction now. The amplitude | + | |
- | + | ||
- | 6. Inverse calculate target curve Series4 With the FD-Functions> | + | |
- | + | ||
- | 7. So similar to the current screen should look like. Until now, 4 corners are occupied, the last corner INVERS3 is active. Now, select the radio buttons are still empty curve 5 and load the original created crossover format XO.dbl. | + | |
- | + | ||
- | Fold 8. Now with TD-Functions> | + | |
- | + | ||
- | 9. By the convolution, | + | |
\\ | \\ | ||
- | 10. In the figure above, the original is now crossover and to see the way you just created. Now only the maximum amplitude must still be adjusted to the maximum amplitude of the original crossover: | ||
- | |||
- | 11. In TD-Functions tab select> Normalization. The curve should be normalized is No.2, choose a type individual gain. (Note. This step is important to note which switch type is linearized, since not all points as the Neville Thiele crossover used in Example are normalized to 0dB When other types of points used to load the original crossover for normalizing to the correct value and to the maximum value of the amplitude to normalize (Max value among bins in the data window). | ||
- | |||
- | 12. Now the preparation of the linearized crossover is complete. Save the current curve No.2 to a new folder under the old name of the crossover. | ||
- | |||
\\ | \\ | ||
- | should 13. To control the linearized Soft carry out the measurement microphone are placed in the same place as it was used during LogSweep. Instead of the original crossover, the new linearized crossover is integrated as * .wav file in the filter box, before recording in the LogSweep recorder. | ||
- | |||
\\ | \\ | ||
- | 14. The final check is carried out after the merge of all linearized crossover to a new multi-way Wav file. This is followed by another LogSweep at the listening position, which generates the pulse responses for the final filter creation. Is this Hörergebniss unsatisfactory or the use of linearized crossover with greater losses associated with the IACC values, a new linearization should be made with other preset (see above introductory text). | + | \\ |
- | + | {{: | |
- | ---- | + | |
+ | 2. Select the tab TD-function> | ||
\\ | \\ | ||
- | **Schnellanleitung:** | + | {{:bilder_anleitungen:lin_03_gefenstert.png? |
- | + | ||
- | - [[:wiki: | + | |
- | - Kurve 1 Fenstern mit [[: | + | |
- | - Zu linearisierenden Bereich markieren | + | |
- | - [[: | + | |
- | - [[: | + | |
- | - Original Frequenzweiche in Kurve 5 laden | + | |
- | - [[: | + | |
- | - Inhalt aus Kuve 2 löschen, Kurve 6 anwählen | + | |
- | - [[: | + | |
- | - [[: | + | |
- | - Kurve 2 als neue XO…..dbl Datei speichern | + | |
- | ---- | + | 3. In curve 2 mark the frequency range you want to correct with the two mouse buttons.. This may be the region having particularly large fluctuations or you can cover the full range of the crossover. At the beginning and end of the curve, however, some distance should be allowed, since these areas are affected by the windowing |
- | + | \\ | |
- | \\ **Ausführliche Anleitung: | + | \\ |
- | + | \\ | |
- | 1. Zuerst muss nach oben erläuterten Gesichtspunkten eine [[: | + | |
- | + | ||
- | | + | |
- | + | ||
- | 2. Im Reiter TD-Funktions > [[: | + | |
- | + | ||
- | | + | |
- | + | ||
- | 3. In der nun gefensterten 2. Kurve wird der Bereich mit den beiden Maustasten markiert, den man für die Linearisierung der Frequenzweiche verwenden möchte. Dies kann der Bereich sein, der besonders große Schwankungen aufweist oder man kann die ganze Bandbreite der Frequenzweiche erfassen. Zu den Anfangs- und Endpunkten der Kurve sollte jedoch etwas Abstand gelassen werden, da diese Bereiche durch die Fensterung ([[: | + | |
- | \\ | + | |
- | \\ | + | |
- | \\ | + | |
{{: | {{: | ||
- | 4. Im rechten Bereich des Amplitudenfensters wird bei MarkL die Start- und bei MarkR die Endfrequenz des markierten Bereichs angezeigt, hier 639Hz und 19396Hz. \\ \\ \\ \\ {{: | + | 4. In the right pane of the amplitude window, the start and the end frequency are displayed as MarkR and MarkL, here 639Hz and 19396Hz.\\ |
+ | \\ | ||
+ | \\ | ||
+ | \\ | ||
+ | {{: | ||
- | 5. Um die Kurve außerhalb des markierten Bereiches zu verwerfen wird nun TD-Functions | + | 5. To neutralize the curve outside of the marked area TD-Functions Phase Extraction |
- | \\ \\ \\ \\ {{: | + | \\ |
+ | \\ | ||
+ | \\ | ||
+ | \\ | ||
+ | {{: | ||
- | 6. Mit der FD-Functions > [[: | + | 6. Invert the target curve into Serwies4 ith the FD-Functions> |
- | \\ \\ \\ \\ {{: | + | \\ |
+ | \\ | ||
+ | \\ | ||
+ | \\ | ||
+ | {{: | ||
- | 7. So ähnlich sollte der aktuelle Bildschirminhalt aussehen. Bis jetzt sind 4 Kurven belegt, die letzte Kurve Invers3 ist aktiv. Nun an den RadioButtons die noch leere Kurve 5 anwählen und die Original erstellte Frequenzweiche im Format XO.dbl laden. \\ | + | 7. You should get a screen similar to the screen above. Up to now, 4 curves are occupied, the last curve INVERS3 is active. Now, select the radio button for the still empty curve 5 and load the originally created crossover (with the name in the format XO___.dbl).\\ |
+ | \\ | ||
+ | \\ | ||
+ | {{: | ||
- | 8. Nun mit TD-Functions > [[: | + | 8. Now with TD-Functions> |
- | \\ | + | \\ |
- | \\ | + | \\ |
- | \\ | + | \\ |
{{: | {{: | ||
- | 9. Durch die Faltung hat sich die Anzahl der Abtastwerte im Filter der Kurve 6 verdoppelt. Der Filter muss nun wieder auf die übliche Länge von 65536 Abtastwerten zurechtgeschnitten werden. Dazu aus dem Reiter | + | 9. As a result of the convolution, |
- | \\ \\ \\ {{: | + | \\ |
+ | \\ | ||
+ | \\ | ||
+ | {{: | ||
- | 10. Im obigen Bild ist nun die Original Frequenzweiche und die so eben erstellte zu sehen. Nun muß nur noch die maximale Amplitude an die maximale Amplitude der Original Frequenzweiche angeglichen werden: \\ \\ | + | 10. In the figure above, you can see the original crossover and the one you just created. Now the maximum amplitude must still be adjusted to the maximum amplitude of the original crossover:\\ |
+ | \\ | ||
+ | \\ | ||
+ | {{: | ||
- | 11. Im Reiter | + | 11. In TD-Functions |
+ | \\ | ||
+ | \\ | ||
+ | \\ | ||
+ | {{: | ||
- | 12. Nun ist die Erstellung der linearisierten Frequenzweiche abgeschlossen. Die aktuelle Kurve Nr.2 in einem neuen Ordner unter der alten Bezeichnung der Frequenzweiche speichern. \\ \\ \\ {{: | + | 12. Now the preparation of the linearized crossover is complete. Save the current curve No.2 to a new folder under the old name of the crossover.\\ |
+ | \\ | ||
+ | \\ | ||
+ | {{: | ||
+ | |||
+ | \\ | ||
+ | 3. To test the linearized crossover carry out the measurement with the microphone in the same place as it was during the first LogSweep. Instead of the original crossover, the new linearized crossover is included after conversion to a * .wav file in the filter box, before recording in the LogSweep recorder. | ||
- | 13. Um eine Kontrolle der linearisierten Weiche durchzuführen sollte das Messmikrofon an die gleiche Stelle platziert werden, wie es beim [[: | + | 4. The final check is carried out after the merging of all the linearized crossovers to a new multi-way |
- | \\ | + | |
- | \\ | + | |
- | 14. Die endgültige Kontrolle erfolgt nach der Zusammenführung aller linearisierter Frequenzweichen zu einer neuen Multiway-Wav Datei. Danach erfolgt wieder ein [[: | + | |
en/wiki/anhang/anleitungen/linearisierung_von_frequenzweichen.txt · Last modified: 09/08/2016 22:43 by hamish