From: Carl Hetherington Date: Wed, 13 Oct 2021 21:56:32 +0000 (+0200) Subject: Remove manual stuff about the hidden upmixers. X-Git-Tag: v2.15.169~7 X-Git-Url: https://main.carlh.net/gitweb/?p=dcpomatic.git;a=commitdiff_plain;h=91adae31531b3ac8d1129cc3b2df577a39a892ee Remove manual stuff about the hidden upmixers. --- 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. The Processor 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: @@ -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. -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: - -DCP L is input L bandpass-filtered between 1.9kHz and 4.8kHz. -DCP R is input R bandpass-filtered between 1.9kHz and 4.8kHz. -DCP C is input L mixed with input R, taken down by 3dB and then bandpass-filtered between 150Hz and 1.9kHz. -DCP Lfe is input L mixed with input R, taken down by 3dB and then bandpass-filtered between 20Hz and 150Hz. -DCP Ls is input L bandpass-filtered between 4.8kHz and 20kHz. -DCP Rs is input R bandpass-filtered between 4.8kHz and 20kHz. - -This upmixing algorithm is due to Gérald Maruccia. - - -Stereo to 5.1 up-mixer B — this uses a different approach: - - DCP L is input L. - DCP R is input R. - DCP C is input L + input R taken down by 3dB. - DCP Lfe is DCP C bandpass filtered between 20Hz and 150Hz. - DCP Ls and Rs are input L - input R with a 20ms delay. - - - - -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.