diff options
| author | Carl Hetherington <cth@carlh.net> | 2021-10-13 23:56:32 +0200 |
|---|---|---|
| committer | Carl Hetherington <cth@carlh.net> | 2021-10-14 19:42:02 +0200 |
| commit | 91adae31531b3ac8d1129cc3b2df577a39a892ee (patch) | |
| tree | c1a43614fd4caeb55600c83bac8079a694da432d | |
| parent | 1e419dedd828490498b501e86e67654461cc9488 (diff) | |
Remove manual stuff about the hidden upmixers.
| -rw-r--r-- | doc/manual/dcpomatic.xml | 26 |
1 files changed, 1 insertions, 25 deletions
diff --git a/doc/manual/dcpomatic.xml b/doc/manual/dcpomatic.xml index 32007d1c2..19551d008 100644 --- a/doc/manual/dcpomatic.xml +++ b/doc/manual/dcpomatic.xml @@ -1874,7 +1874,7 @@ unused channel will be filled with silence. <para> The <guilabel>Processor</guilabel> control allows you to select a -process to apply to the audio before it goes into the DCP. Three processes are currently provided: +process to apply to the audio before it goes into the DCP. One process is currently provided: </para> <itemizedlist> @@ -1884,31 +1884,7 @@ stereo input and extract the common part (corresponding to the The remaining L/R parts will be kept in the L/R channels of the DCP. This may be useful to make near-field L/R mixes more compatible with cinema audio systems.</listitem> -<listitem>Stereo to 5.1 up-mixer A — this will take a stereo input and up-mix it to ‘fake’ 5.1. The input L/R are treated as follows: -<itemizedlist> -<listitem>DCP L is input L bandpass-filtered between 1.9kHz and 4.8kHz.</listitem> -<listitem>DCP R is input R bandpass-filtered between 1.9kHz and 4.8kHz.</listitem> -<listitem>DCP C is input L mixed with input R, taken down by 3dB and then bandpass-filtered between 150Hz and 1.9kHz.</listitem> -<listitem>DCP Lfe is input L mixed with input R, taken down by 3dB and then bandpass-filtered between 20Hz and 150Hz.</listitem> -<listitem>DCP Ls is input L bandpass-filtered between 4.8kHz and 20kHz.</listitem> -<listitem>DCP Rs is input R bandpass-filtered between 4.8kHz and 20kHz.</listitem> </itemizedlist> -<para> -This upmixing algorithm is due to Gérald Maruccia. -</para> -</listitem> -<listitem>Stereo to 5.1 up-mixer B — this uses a different approach: -<itemizedlist> - <listitem>DCP L is input L.</listitem> - <listitem>DCP R is input R.</listitem> - <listitem>DCP C is input L + input R taken down by 3dB.</listitem> - <listitem>DCP Lfe is DCP C bandpass filtered between 20Hz and 150Hz.</listitem> - <listitem>DCP Ls and Rs are input L - input R with a 20ms delay.</listitem> -</itemizedlist> -</listitem> -</itemizedlist> - -The up-mixers are not particularly advanced and should be used with care. You are strongly advised to check how the DCPs sound in a cinema if you have used one of DCP-o-matic's upmixers. <!-- ============================================================== --> <section xml:id="sec-reels"> |