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--- en:wiki:funktionen:generate:crossover [12/09/2016 18:23] – hamish
+++ en:wiki:funktionen:generate:crossover [12/09/2016 19:11] – hamish
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-**This page is not fully translated, yet. Please help completing the translation.** \\
-//(remove this paragraph once the translation is finished)//
 ====== Crossover ======
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 **Options:**
-Input fields for crossover frequencies of the individual channels, together withh desired delays of each driver relative to the lowest frequency driver. If a driver is required to be moved earlier to match the lowest frequency driver, the "delay" may be negative.\\
+. Input fields for crossover frequencies of the individual drivers, together with desired delays of each driver relative to the lowest frequency driver. If a driver is required to be moved earlier to match the lowest frequency driver, the "delay" may be negative.
-There are several types of crossovers available:
-- Butterworth / Linkwitz find their counterparts even with analog filters\\
+\\
-- Neville Thiele: Provides a steep separation with a slightly sloping top, whereby undesired frequencies are very well hidden.\\
+. There are several types of crossovers available:
-- Bessel: These filters have with the shortest Ringing, whereby the step response can be optimized very far\\
-Selection Phase\\
-Filter length (Higher values result in longer, more accurate filtering with longer lead time. Recommendation: 44.1kHz-48kHz: 65536 taps, 88,2-96kHz: 131072 taps)\\
-DelAIXO: ???\\
-Remove Format (Only if the convolution software used may not handle .dbl filter .pcm choose)
-Use:\\
+- Butterworth / Linkwitz find their counterparts with analog filters, although unlike their analog counterparts may be made linear phase.\\
-The crossovers started replacing analog "Hardware" crossovers in active multi-way speakers. They can also be linearized and are trimmed in time accuracy.
+- Neville Thiele: Provides a steep separation with a slightly sloping top, whereby undesired frequencies are very well suppressed.\\
+- Bessel: These filters have the shortest ringing, which allows the step response to be highly optimized.
+A companion function recently introduced allows the creation of Horbach-Keele crossovers (speakers must be designed with this crossover in mind, or at least fit its requirements by lucky accident) which provide nearly constant vertical dispersion of sound over a broad range of frequencies.
 \\
-Example: Instructions: Create digital crossovers
+. Selection of linear or minimum phase\\
+. Filter length (Higher values result in longer, more accurate filtering with longer latency and higher CPU utilization. Recommendation: 44.1kHz-48kHz: 65536 taps, 88.2-96kHz: 131072 taps, 176.4-192kHz: 262144, 352.8 - 384kHz: 524288 - note that very long filter lengths can put extreme demands on the convolution computer.)\\
+DelAIlXO: If checked, deletes all linear phase crossover files in the active directory before creating the crossovers to be generated. Does not delete minimum phase crossovers - probably a bug.\\
+. Crossover Format (Only if the convolution software used cannot handle .dbl filters, or the .wav files that Acourate can create from them choose single precision .pcm)
-**Beschreibung:** \\
+**Use:** \\
-Mit dieser Funktion werden digitale Frequenzweichen für aktive Mehrwege-Lautsprecher erstellt.
+Digital crossovers can be superior replacements for analog "hardware" crossovers in active multi-way speakers. They can also be linearized and fully adjusted for time accuracy. Impulse and step response for speakers using such crossovers can approach theoretical limits.
 \\
-**Optionen:**
+**Example:** [[:en:wiki:anhang:anleitungen:erstellen_digitaler_frequenzweichen|Instructions: Creation of Digital Crossovers]]
-   - Eingabefelder für Trennfrequenzen der einzelnen Wege, direkt daneben die Verzögerung in Samples um eine Zeitrichtigkeit der einzelnen Wege herzustellen.
-  - Es stehen verschiedene Typen von Frequenzweichen zur Verfügung: \\  \\ - Butterworth / Linkwitz: Finden ihre Entsprechungen auch bei analogen Filtern \\ - Neville-Thiele: Sorgt für eine steile Trennung mit flach abfallendem Anfang, wodurch unerwünschte Frequenzen sehr gut ausgeblendet werden. \\ - Bessel: Diese Filter haben mit das kürzeste Ringing, wodurch sich die Sprungantwort sehr weit optimieren lässt
-  - Auswahl der Phase
-  - Filterlänge (Höhere Werte ergeben längere, genauere Filter mit längerer Durchlaufzeit. Empfehlung: 44,1kHz-48kHz: 65536 taps, 88,2-96kHz: 131072 taps) \\ DelAIXO: ???
-  - Filterformat (Nur falls die verwendete Faltungs-Software keine .dbl Filter verarbeiten kann .pcm wählen)
- \\ **Verwendung:** \\ Die erstellten Frequenzweichen ersetzen analoge "Hardware" Frequenzweichen in aktiven Mehrwege-Lautsprechern. Sie können außerdem [[:wiki:anhang:anleitungen:linearisierung_von_frequenzweichen|linearisiert]] werden und auf [[:wiki:anhang:anleitungen:ausgleich_von_laufzeitunterschieden|Zeitrichtigkeit]] getrimmt werden.
- \\ **Beispiel:**  [[:wiki:anhang:anleitungen:erstellen_digitaler_frequenzweichen|Anleitung: Erstellen digitaler Frequenzweichen]]