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- this file lists all supported azid-switches for BeSweet v1.5.
- beware : switches are case-sensitive.
-
- Usage :
- BeSweet -core(..) -ota(..) -azid(..) -shibatch(..) -boost(..) -lame(..) -mp2enc(..) -ac3enc(..) -ogg(..) -split( .. ) -plugin( .. )
-
- Dg.
-
-
- -g GAIN
- -------
-
- Default: 1.0 (or 0db)
-
- This option controls the main (output speaker) gain. The value can be given
- in db's, in percentage, or a positive numerical value.
- Examples: -g 5.3, -g 95%, -g -3db, -g 6db.
-
- "-g max" is a special switch for finding maximum gain. (Normalize)
- "-g 90%", for example, will normalize a track to 90% of its maximal gain.
-
-
- --maximize
- ----------
-
- Default: omitted
-
- This option will enable a two-pass maximize function of azid. BeSweet
- will in the first pass scan the entire file to find the maximum
- level. In the second pass the audio will be properly decoded, gaining
- it up to 0dB FS.
-
- NOTE: Sometimes when you use this function, the output will still
- create downmix overflow warnings. This is normal. It happens because
- the signal has touched the 0dB FS, or because of some random value
- within the signal has caused it to slightly overload.
-
-
- -L LRLFE_LEVEL
- ----------------
-
- Default: 0.0
-
- This controls the downmix-level of the LFE channel into the LR channels.
-
-
-
- -l LFE_LEVEL
- ------------
-
- Default: 0.0
-
- This controls the downmix-level of the LFE channel into the LFE output
- speaker. I.e. if this options is set to a non-zero value, the LFE channel
- output may be listened to with the -olfe option.
-
-
- -C LEVEL
- --------
-
- Default: BSI
-
- This command option controls the center dowmix level into the LR channels.
- Normally, the BSI section contains a field which tells the decoder of how to
- downmix the center channel into the LR channels.
-
- With this option, the user may override the BSI center downmix level and
- specify a custom value. Note that this option is only active when the
- output decode mode (-d) is 2/x.
-
- Allowable values is gain values (either in db's or a positive numerical
- value) or BSI. When BSI is selected, the center downmix level gets its value
- from the BSI section.
-
-
- -S LEVEL
- --------
-
- Default: BSI
-
- This command option controls the surround dowmix level into the LR channels.
- Normally, the BSI section contains a field which tells the decoder of how to
- downmix the surround channels into the LR channels.
-
- With this option, the user may override the BSI surround downmix level and
- specify a custom value. Note that this option is only active when the
- output decode mode (-d) is 2/x and the input stream is either x/1 or x/2.
-
- Allowable values is gain values (either in db's or a positive numerical
- value) or BSI. When BSI is selected, the surround downmix level gets its value
- from the BSI section.
-
-
- -c 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.
-
-
-
- -s STEREO_MODE
- --------------
-
- Default: surround
-
- this option controls what kind of stereo downmix should be applied.
-
- o stereo Simple stereo downmix.
-
- o surround Dolby surround compatible downmix.
-
- o surround2 Dolby surround 2 compatible downmix.
-
-
-
- -f BOOL
- -------
-
- Default: off
-
- This option controls rear-channel filtering. The filter is a 2nd order Butterworth
- filter with at -3 dB point at 7 kHz. There are two
- major applications for this feature:
-
- o To provide proper Pro Logic downmix of the rear channels
-
- o Phasing-problems in the downmix (washy sound) caused by the rear
- channel downmix into the L R channels.
-
- Usually the rear channels are phased 90 deg in respect of the front channels
- prior or inside the ac3 encoder. This is done to avoid phasing problems when
- downmixing the program contents to two channels. Some sources do not provide
- this shifting, and thus this feature is added.
-
- The filter provides an increasing phase shift according to frequency. It is
- 90 deg at 7kHz.
-
- NOTE: This option isn't effective when Six-Waves output mode is selected (-6ch).
-
-
-
- -n BOOL
- -------
-
- Default: false
-
- This selects if the decoder should use dialog normalization reduction. The
- normal dialogue level in a program is defined a reference of loudness, 0db.
- The BSI info variable "dialogue level" informs how much this dialogue level
- is under 0db full-scale (FS) - or how much headroom there is above the
- dialogue level before clip.
-
- One of Dolby's intentions with this variable is to ensure that all dialogue
- levels are played back with the same volume, regardless of the program's
- amount of headroom. It is good to have when the movie you're looking at is
- interrupted by a commercial break, where the headroom varies enormously.
- (It prevents blowing your ears off when the break comes.)
-
- This feature is implemented by attenuate everything such that all programs
- have 31 db headroom, regardless of its original headroom. For a typical
- -27db headroom program, this will case a -4db gain.
-
-
-
- -about
- ------
-
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