Differences

This shows you the differences between two versions of the page.

--- eq1979 [2022/05/13 11:54] – wadmin
+++ eq1979 [2022/12/07 11:03] (current) – wadmin
@@ Line 1: / Line 1: @@
 ===== EQ1979 Analog Strip and EQ =====
+EQ1979 is a [[https://www.reaper.fm/|Reaper JSFX Plugin]] providing frequency accurate modeling of a Neve 1073 filter stage combined with an input gain-compensated saturation.
-VST emulation of an analog channel strip gain stage and eq with soft saturation.
+{{ :1979:1979:1979.png?nolink |}}
-{{ :1979:1979.png |}}
+EQ1979 models all the sonically appealing bumps and drops that shape the sound of these original console strips. Those analog filtering stages with many capacitance/inductors resonances are reproduced, including input transformer contribution.
+It also includes an input saturation stage that provides smooth saturation with automatic gain compensation. The first two third of the control range add slik-soft arctan based saturation, whereas the last third adds some DC bias error just like in a real class A analog console strip. Input can be trimmed after saturation upon preference thanks to the Trim control.
+  * Neve-inspired GUI was designed by Steph at [[https://www.fluidshell.com/accueil|Fluidshell Design]]. Many thanks for his kind contribution to the project.
+  * All signal processing methods are derived from the excellent [[http://ajaxsoundstudio.com/software/cookdsp/|CookDSP library by Olivier Bélanger]].
+==== Controls : ====
+{{ :1979:1979:1979.gif?nolink |}}
+  * **Drive**: Input saturation from 0 to 100% : **Mouse left Click - vertical drag**
+  * **Trim** : Input gain trimming from -24 to +24 dB : **Mouse left click - Vertical Drag** //OR// **Mouse wheel**
+  * **High** : High shelf shaped filter Gain from -16 to +16dB : **Mouse left Click - vertical drag**
+  * **Mid** : Mid Bell shaped filter Gain from -18 to +18dB : **Mouse left Click - vertical drag**
+  * **Mid Frequency** : Mid Bell center frequency, "Off" means inactive : **Mouse left click - Vertical Drag** //OR// **Mouse wheel**
+  * **Low** : Low shelf shaped filter Gain from -16 to +16dB : **Mouse left Click - vertical drag**
+  * **Low Frequency** : Low shelf corner frequency, "Off" means inactive : **Mouse left click - Vertical Drag** //OR// **Mouse wheel**
+  * **HPF** : High pass filter corner frequency, "Off" means inactive : **Mouse left click - Vertical Drag** //OR// **Mouse wheel**
+  * **EQ** : Enables/Disables EQ : **Mouse Left Click**
+  * **Phi** : Enables/Disables phase inversion : **Mouse Left Click**
+  * On all controls, **Right Mouse Click** resets to default value. Notably, Drives comes back to 0%, Trim to 0dB, Filter Gains to 0dB, and Frequency settings to "Off".
+  * **Right clicking** on the lower right corner of the UI displays/hides reaper native slider controls.
+==== Download ====
+Github : https://github.com/D4p0up/eq1979
+==== Insight ====
+This was developped by analysing datasheet and pulling out in a retry-on error fashion an "equivalent" frequency response. This using both plugindoctor and ear tests VS the latest UAD 1073 emulation plugin.
+Design cascades ~40 peq/butterworth filters to reproduce frequency response, including native fluctuations at phase and frequency level induced by capacitive, inductive and transformer components.
+Saturation uses Arctan as a baseline to avoid any non linear cliff-effect on sound.
+Filter methods are derived from Oliver Belanger's COOKDSP library - Copyright (c) - 2014 - Olivier Belanger
+Here are some of the final comparison diagrams, orange/blue curves are UAD Neve 1073 native plugin L/R channel, pink is EQ1979:
+Raw static with mid engaged (with typical 1073 mid bump)
+{{https://github.com/D4p0up/eq1979/raw/main/freqresponse/raw.png}}
+Typical Neve "Air" 14dB high boost (with its mid drop)
+{{https://github.com/D4p0up/eq1979/raw/main/freqresponse/14dB_HS_boost.png}}
+Typical Neve Mid "front push" 14dB 1.6k boost
+{{https://github.com/D4p0up/eq1979/raw/main/freqresponse/14dB_1600hz.png}}
+==== Versions ====
+- Beta 0.96
+   * New slick GUI By Fluidshell Design !
+   * Improved saturation with progressive bias error
+   * Electrical components noise modeling added
+   * Frequency band controls can now be set/reset using mouse click too (mousewheel still).
+   * Right clicking on the lower right corner of the UI displays/hides reaper native slider controls.
+- Beta 0.95
+   * Improved modeling of HPF and Low Shelf filter responses
+   * 10Hz parameter smoothing on Low, Mid and High frequency gain parameters for automation-safe operation
+- Beta 0.94 - internal bugfixing stage never released
+- Beta 0.93
+   * HPF frequency response tuned with expected bump
+   * Testing parameter smoothing on HPF
+   * Correcting minor GUI bugs on switching to +-16dB for shelfs
+- Beta 0.92 :
+   * GUI : Added mousex lock on control change, no more control swapping when adjusting parameter
+   * Lowered low and high shelf EQ max gain down to 16dB as per original 1073 design
+   * Added EQ On/Off and Phase buttons as per original 1073 design
+   * minor tweaks
+- Beta 0.91 - Low Shelf GUI Fix and Sat mouse speed increase by 25%
+- Beta 0.9 - First release
-====Download====
-Beta Version 0.2 {{ ::1979:eq1979.zip |}}
-====Changelog====
-**0.2** - Low frequency rumble fix
-  - Added low frequency smoothing
-  - Added 20k lowpass
-**0.1** - Inital Release