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Remote Control Application

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If you are not using dayparting or the external trigger port the default preset will always be the 'on air' preset and 

it will be marked in the preset list with a (DEF) which appends to the preset name. If the scheduler (dayparting) 

or the remote trigger interface has changed the preset the (DEF) marked preset may not be the one that is on 

the air. There are two additional identifiers to mark these occurrences. (DP) for Daypart and (TR) for remote trig-

ger. If a daypart of trigger occurs the (TR) or (DP) will appear next to the name and the preset name will change 

to green to indicate that it is 'on air' and has overridden the (DEF) default preset. When the daypart or trigger 

finishes control will always return to the default (DEF) preset.

It is possible to have A (DEF)(TR)(DP) situation where a remote trigger forces 'on air' a user preset which has 

also been triggered by a daypart and that preset happened to be the default preset. Unlikely but possible.

Various preset operations are possible including changing the default preset, saving a preset to a user preset 

location, changing the name as well as PC file operations to backup or share presets with other DSPXmini-HD 

users. To perform an operation you will need to select a preset by clicking on to the name in the list. This will 

highlight the preset with a blue bar. This does not change the preset or affect anything on the air. All this blue 

selection bar indicates if that this is the preset that we want to perform an operation on. We have two methods 

of performing the operation on the preset. The first method is to click one of the icons at the bottom of the win-

dow. These are from left to right, Load preset, Save preset, Rename preset, Load from PC, Save to PC. The 

other method is to right click over the preset where you will be presented with a drop down menu containing the 

same options.

Load preset

Load preset will change the default preset to the one selected. This usually means that this preset will become 

'on air'. The exception to this is when the default preset is being overridden by a daypart or remote trigger. In 

this case the DSPXmini-HD will 'on air' the selected preset when the daypart or trigger hands back control to the 

default preset.

Save preset

Save preset will save the current on-air preset to the highlighted user preset position. You can not write over a 

factory preset. 

Rename preset

Rename preset allows the user preset name to be edited. You are restricted to 1 characters.

Saving presets to PC

This option will pop up the standard windows save dialog box. You can select a file name and location for the 

preset to be saved under. The preset that is saved is the currently highlighted (in blue) preset, not the one that is 

currently 'on-air'.

Preset window shown

Summary of Contents for DSPXmini-HD

Page 1: ...DSPXmini HD Digital Audio Broadcast Processor Operational Manual Version 1 10 www bwbroadcast com...

Page 2: ...lowpass filtering and output levels 12 The DSPXmini HD and its processing structure 13 The DSPXmini HD processing block diagram 14 The menu system 15 The menu structure 16 Processing parameters 17 Se...

Page 3: ...aintenance repair work are expressly excluded from this warranty in particular if caused by improper handling of the product by the user This also applies to defects caused by normal wear and tear in...

Page 4: ...r appliance including amplifiers that produce heat Power Source The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the applian...

Page 5: ...ectromagnetic compatibility Conformity is declared to those standards EN50081 1 EN50082 1 WARNING This equipment generates uses and can radiate radio frequency energy If not installed and used in acco...

Page 6: ...we liked so the concept became DSP processor X As the project developed it soon became clear that the processor was to be a processor for all seasons and so in true algebraic fashion X represents many...

Page 7: ...nd digital circuits These include 24 bit A D and D A converters analogue level control circuitry 6 x 24 bit DSP s an ethernet port a trigger port an RS232 port an LCD screen and memory devices to hold...

Page 8: ...ACE U3 CLASSICAL 3 A SAVE PRESET UP GO U1 BASS FACE U2 ROUND FACE U3 CLASSICAL 3 A INS DEL DONE NAME PRESET U2 MY PRESET 3 UP LOAD SAVE DSPXmini OUTPUT PROCESS INPUT D S P X m i n i H D Analogue input...

Page 9: ...e value shown is the largest gain reduction of the left and right channels Under normal operation with a stereo audio feed this is fine but you may observe strange metering if the channels are not ver...

Page 10: ...s For analogue inputs adjust the INPUT menus INPUT LEVEL CONTROL so that the input meters do not clip We recommend setting the mixing board or audio source to full level output even clipping prior to...

Page 11: ...med on the RMS level of the audio waveform and the ratio of compression is usually adjustable Compression is usually gated to prevent gain riding and suck up of noise during silence or quiet periods L...

Page 12: ...Reducing the amount of high end puts less stress on the codec and can lower the amount of codec induced artifacts The actual setting will depend on the type of codec and the bitrate used Lower bitrate...

Page 13: ...set to provide up to 6dB of gain on one of four frequencies with a choice of 4 Q s This can be thought of as a simple bass parametric Xover The DSPXmini HD employs linear phase time aligned digital FI...

Page 14: ...BLOCK DIAGRAM ANALOG DIGITAL A D SRC LOW AGC MID1 AGC HIGH AGC INPUT MB AGC LPF BPF BPF HPF BASS PEAK MID2 AGC LOW LIM MID1 LIM HIGH LIM MB LIM MID2 LIM OUTPUT DIGITAL SRC ANALOG D A SYNC N 1 DELAY AT...

Page 15: ...hat affect input selection level control and signal conditioning PROCESS Contains all the controls that affect the processing OUTPUT Contains all the controls that affect output selection level contro...

Page 16: ...vel BAND 2 MIX level BAND 3 MIX level BAND 4 MIX level menu LOOK AHEAD BASS CLIP LEVEL LP FILTER DRIVE menu OUTPUT LEVEL menu SCHEDULE X REPRESENTS 0 7 TIME DAYPARTING ON OFF TIME CALIBRATION DAYPARTS...

Page 17: ...eduction of 0dB the mid way point The drive can be increased or decreased by up to 12dB You may need to increase the drive a little as you go up through the bands to compensate for the fact that music...

Page 18: ...d LP FILTER A high frequency filter adjustable over a range of 4 20 kHz This control can be used to tame the artifacts of subsequent perceptal coding especially when used with very low bitrates DRIVE...

Page 19: ...is available in the code lock section of this manual REMOTE SOURCE This selects the seria or the NET LAN port as the remote control method The default option is Off The LAN CONFIG menu contains the co...

Page 20: ...limiter stages Because of the RMS based level detectors the multi band AGC can re equalise the sound in a more natural manner than the peak limiter stages which use peak detectors As the human ear wo...

Page 21: ...ustrate things a little clearer The peak and average function can clearly be seen in the images Traditionally audio limiters have two time constants an attack the time is takes the limiter to respond...

Page 22: ...control and defines the position of the platform that the peak circuit releases to The mixer The post limiters mixer in the DSPXmini HD is not strictly a mixer but a band output level control where sm...

Page 23: ...nergy from the audio area that codecs are most sensitive to As a general rule the filter should be set at or below half smapling freqeuncy of the following codec In any case you should experiment with...

Page 24: ...the bands Speed up the release times making them faster While it is possible to create a strange response in the multi band AGC it is hard to produce distortion because whatever gets through the AGC i...

Page 25: ...ahead limiter drive WE SUGGEST ONLY SMALL MODIFICATIONS FROM FACTORY PRESET SETTINGS IF YOU ARE MODYFYING LOTS OF THE PARAMETERS IF YOU ARE ADJUSTING ONLY A COUPLE FROM THE ABOVE SUGGESTIONS THEN YOU...

Page 26: ...e you press the DONE soft key to save the preset to the DSPXmini HD s memory For speed saving the current settings to the same active preset is as simple as pushing the same button three times as SAVE...

Page 27: ...o are looking loudness above all Has a nice bottom slam but can sound squashed and fatiguing on prolonged listening F6 EASY LISNIN A nicely flowing preset for easy listening music Your female audience...

Page 28: ...are new versions of DSPXmini HD code will also need to be uploaded into the DSPXmini HD via the serial port system The BW Broadcast development team have built the serial communications XMODEM pro toc...

Page 29: ...rther information on the remote application is contained on the following pages If the DSPXmini HD remote application does not connect or disconnects after a few seconds then it could be that the pass...

Page 30: ...should then see the menu tree in the left hand window see above image You can now navigate through the menu tree and see the controls that are contained in that menu appear in the main controls windo...

Page 31: ...in the list This will highlight the preset with a blue bar This does not change the preset or affect anything on the air All this blue selection bar indicates if that this is the preset that we want...

Page 32: ...lot of explanation The scheduling screens that controls the dayparting may appear daunting so we are going to give you a quick guide to using it There are three menu locations for controlling schedul...

Page 33: ...00 05 00 factory preset 2 to run from 12pm everyday for 5 hours We could instead setup the dayparts as DPO F2 CHR ALL 07 00 10 00 factory preset 2 to run from 7am everyday for 10 hours DP1 U4 NEW PRE...

Page 34: ...e connected to the earth return pin they will change the currently active preset to the user preset triggered by that pin If more than one pin is pulled low at the same time the pin with the lowest nu...

Page 35: ...and set the code lock option to disa bled Confirm the current password Changing the lock codes Once locked the DSPXmini HD will not allow processing adjustments or access to the output menu The lock c...

Page 36: ...and with the same control set the preset to switch to when the daypart triggers when the daypart start time matches the system clock You can also set the start time trigger of each daypart and set the...

Page 37: ...ble Signal to Noise 90 dB unweighted Bypass mode de emphasised 20 Hz 15 kHz bandwidth refer enced to 100 modulation L R Crosstalk 70 dB 20 Hz 20 kHz Distortion 0 01 THD Bypass preset 20 Hz 20 kHz band...

Page 38: ...0 240 VAC 50 60 Hz 35 VA Connector IEC Detachable 3 wire power cord supplied Grounding Circuit ground is independent of chassis ground and can be isolated or connected with a rear panel switch Dimensi...

Page 39: ...dB dB BAND DRIVE dB dB dB dB ATTACK DECAY GATE dB dB dB dB MB LIMITER MASTER DRIVE dB dB dB dB BAND 1 DRIVE dB dB dB dB PEAK ATTACK PEAK DECAY AVERAGE ATTACK AVERAGE DECAY BAND DRIVE dB dB dB dB PEAK...

Page 40: ...Preset Sheet 40 LP FILTER kHz kHz kHz kHz DRIVE dB dB dB dB OUTPUT LEVEL...

Page 41: ...www bwbroadcast com...

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