JBL SYNTHESIS SDP-45 User Manual

JBL SYNTHESIS SDP-45 User Manual Manual pdf 44 page image

JBL SYNTHESIS SDP-45 Setup- 44 -OTHERControls advanced settings on the source.Parameter Possible SettingsSRC PARAM Individual, GlobalDIGI OUT ZoneDAC, TOSLINKLIPSYNC 0 to 255mSecFMT (Format) DETECT Gapless, Disable, AutoSOURCE PARAMETERThe Source Parameter controls if the setup done in the previousSOURCE SETUP screen acts for all sources or is only affected on thecurrently selected source. For example, if the parameter is set toGLOBAL then all speaker size, levels and crossovers and triggers will beglobal and the changes will affect all sources. If set to INDIVIDUAL thenthese changes will be done on a SOURCE specific selection. Anychanges done while in GLOBAL will affect all sources. When switchingfrom INDIVIDUAL to GLOBAL all parameters on the currently selectedsource will become active for all sources. Conversely, when switchingfrom GLOBAL to INDIVIDUAL all parameters will return to the settingslast stored during INDIVIDUAL. This parameter affects all settings withinthe Source Setup Page and the preferred surround mode.DIGITAL OUTThis controls what will be sent to the OPTICAL digital output. ZoneDACwill be a down mixed 2-channel output from the MAIN ZONE. TOSLINKwill be a pass through of the Dolby Digital or DTS signal.FORMAT DETECTThis note describes an anomaly showing up when playing BLU-RAY (orBD) media containing digital recording in Dolby Digital or DTScompressed formats, when switching from one audio track recording toanother or from track playing to BLU-RAY menu and back. This is notapplicable to analog sources, USB source or HDMI sources.When a compressed digital contents stops playing, as when a trackfinishes playing, a pause or fast forward buttons are pressed etc, aplayer stops outputting the compressed digital contents but typicallycontinues outputting linear PCM signal. SDP-45 built-in digital signalprocessor catches such occurrences using a so-called ―zero rundetection‖ algorithm. This is necessary to prevent mis-decoding ofcompressed digital bit-stream as uncompressed or vice versa, whichwould result in a spurious noise. When an audio track is played again,after the pause, the ―zero-run detection‖ algorithm allows the decoder toswitch back to the correct decoding format.DISABLE – disables the ―zero-run detection‖ algorithm. This is the bestsetting for all digital sources that are guaranteed to always output anuncompressed linear PCM format. This allows for the most robust andfastest switching between tracks recorded at different sample rates(44.1kHz, 48, 96, 192 etc). It is the default setting for CBL/SAT, BAL1and BAL2 sources. However, this setting may also permit a spuriousnoise occurring on some BLU-RAY media when a compressed digitalcontent is being stopped or paused.AUTO – enables the full version of ―zero-run detection‖. It prevents mis-detecting of digital formats and prevents any spurious noise appearingwhen stopping or pausing a compressed digital bit-stream from the BLU-RAY media etc. However, this setting may sometimes delay or preventdecoding of a compressed track after switching it by fast forward button,or during a sequential play.GAPLESS – enables a simplified version of the ―zero-run detection‖algorithm which prevents occurrence of the very short burst of noise atthe start of a compressed Dolby Digital or DTS track. It does not preventthe spurious noise occurring on some BLU-RAY media when thecompressed digital bit-stream is being stopped or paused. Unlike PCMAUTO, this setting would not cause a delay or a loss of play at a trackstart or after fast forward. This is the default setting for the CD source.