Replaygain For Movies
Reply #29 – 2003-07-09 10:10:45
there are some 'interesting' docs about DD metadata found on dolby.com, basically it is about the dialog 'normalization' and drc and how all that applies on the 'stereo only' mode when needed....http://www.dolby.com/metadata/pa.st.0102.MDGuide.pdf Is this information (DRC and dail-norm) lost when people rip DVDs? it is lost when you make 2 channel wav of course, but azid decoder is aware of the metadata and drc stuff, from azid (v1.8 build 825) help:c COMPR, --dcompr=COMPR ------------------------ Default: none This option sets the overall dynamic compression in the decoder. This value is applied to every output speaker. The bitstream contains information of how much to amplify or attenuate the sound to decrease the overall dynamic variations (loudness) in the program contents. Different options exists to choose the wanted dynamic reduction: o none No dynamic compression. The program contents is unchanged. o normal Normal dynamic compression. Normal in-store decoders use this as an hardcoded default. o light Light dynamic compression. This is 50% (-6db) of the reduction/gain that normal dynamic compression would give. o heavy Heavy dynamic compression. Intended for poor listening environment with much background noise. o inverse Dynamic expansion. This is the inverse value of the light dynamic compression, i.e. it makes strong sounds stronger and weaker sounds weaker. since most of the consumer standalone dvd players are using 'normal' afaik the deafult here isnt really a good one i guess.