Differences

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

--- eq1979 [2022/12/07 10:58] – wadmin
+++ eq1979 [2022/12/07 11:03] (current) – wadmin
@@ Line 4: / Line 4: @@
 {{ :1979:1979:1979.png?nolink |}}
-Designed by cascading ~40 peq/butterworth filters to reproduce frequency response, 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.
+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-smooth arctan based starutation, 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.
+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.
@@ Line 30: / Line 30: @@
 ==== 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 ====
@@ Line 54: / Line 75: @@
 - Beta 0.9 - First release
-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.
-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}}