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en:wiki:funktionen:td-functions:reversion [24/06/2016 15:37] ulien:wiki:funktionen:td-functions:reversion [02/01/2021 17:42] (current) hamish
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 +====== Reversion ======
 +<font 14px/Arial, sans-serif;;initial;;#ffffff>**Description:**</font>
-**This page is not fully translatedyetPlease help completing the translation.** \\ +<font 14px/Arialsans-serif;;initial;;#ffffff>The pulse is inverted in timeThis corresponds to a horizontal reflectionIn contrast, there is the "Change Polarity" function which mirrors vertically and thus inverts the amplitude.</font>
-//(remove this paragraph once the translation is finished)// +
-====== Reversion ======+
-\\ +<font 14px/Arial, sans-serif;;initial;;#ffffff>Here the time is inverted, thus the impulse is played "backwards".</font>
 \\ \\
-**Options:**+<font 14px/Arial, sans-serif;;initial;;#ffffff>**Options:**</font> 
 +<font 14px/Arial, sans-serif;;initial;;#ffffff>-</font>
 \\ \\
-**Application:**+<font 14px/Arial, sans-serif;;initial;;#ffffff>**Use:**</font> 
 +<font 14px/Arial, sans-serif;;initial;;#ffffff>A temporal inversion is primarily used for phase correction / manipulation.</font> 
 +<font 14px/Arial, sans-serif;;initial;;#ffffff>The frequency response remains unaffected, but the phase is inverted as a mirror image.</font>
 \\ \\
-**Example:**+<font 14px/Arial, sans-serif;;initial;;#ffffff>**Example:**</font> 
 +<font 14px/Arial, sans-serif;;initial;;#ffffff>We invert the direction of our measurement:</font> 
 +<font 14px/Arial, sans-serif;;initial;;#ffffff>The purely min-phase loudspeaker becomes a purely excess-phase filter. If you convolve or filter the loudspeaker with this reversed pulse, the result is purely linear-phase, i.e. mirror-inverted. This can also be seen here in the inverted phase of both, as curve 2 (green) behaves more or less like a compensation filter:</font> 
 +<font 14px/Arial, sans-serif;;initial;;#ffffff>(in the example above, both pulses were rotated on sample 0)</font> 
 +<font 14px/Arial, sans-serif;;initial;;#ffffff>In practice, however, the filter will be cleaned of amplitude and minphase beforehand in order to correct the pure excess phase distortion of the loudspeaker. This is done with "TD Functions - Extract Phase - Excess Phase" **after** the impulse has been windowed to a reasonable level beforehand (via Frequency Dependent Window).</font>
en/wiki/funktionen/td-functions/reversion.txt · Last modified: 02/01/2021 17:42 by hamish

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