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miniDSP Ltd – Hong Kong / Email : 

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 / Features and Specifications are subject to change without prior notice 

P 17 

Step 6

: Click on the “Reset device” button to finalize the process 

 

You can now connect to the unit and start synchronizing to the unit again.  

 

Step 7

: If the plug-in upgrade instructions included a DSP firmware upgrade (i.e. different from the above step), you must “Restore to 

default” the DSP in order to push a new DSP configuration (i.e. algorithm for audio processing). Once connected to the unit, click on:  
Restore - > Factory default to clear all memory and overwrite the DSP configuration 
 

Step 8: 

With the unit now running both a CPU & DSP new firmware, you can reload your setting configuration. Just go to the backed 

up files you saved previously. Then reload each of them as follow:  
Click on 

Config 1

 button -> File -> Load configuration to current slot - > Browse to setting1.xml file 

Click on 

Config 2

 button -> File -> Load configuration to current slot - > Browse to setting2.xml file 

And so on. 
 

Step 9: 

Start an audio source and monitor your input/output signal to insure all levels are correct.  

It’s now time to connect your output sources and get your unit up&running again.  
 
If you have any questions, feel free to get in touch with us.  
 

 
 
 
 

 
 
 

4

 

Technical Specifications 

 

Item 

Description 

Digital Signal Processor 

32bit Floating point Analog Devices SHARC ADSP21369 / 333MHz 

Control 

Driverless USB 2.0 control interface for Windows/Mac OS x environments 
A computer is only required for the initial configuration.  

Analog Audio inputs 

Balanced Audio connectivity on XLR Neutrik connector 
Pin 1 = Shield / Pin 2 = Hot / Pin 3 = Cold 

ADC performance: 114dB SNR 

Analog Audio outputs 

Balanced Audio connectivity on XLR Neutrik connector 
Pin 1 = Shield / Pin 2 = Hot / Pin 3 = Cold 
DAC performance: 114dB SNR 

Sample rate / Resolution 

Resolution: 32bit 
Sample rate: Depends on selected plug-in. Please consult plug-in datasheet for 

more information on the operating sample rate of the DSP 

Template FIR filter capabilities 
(Important note: FIR capabilities are controlled by 
the plug-in used and not the hardware itself).  

Mono signal: FIR filter with up to 12228 taps @48kHz, 6144 @ 96kHz 
Stereo signal: FIR filter with up to 6144 taps/ch  @48kHz 
Please consult the plug-in specs for more info.  

FIR filter storage 

FIR taps coefficients & DSP configuration automatically loaded at bootup 

Summary of Contents for OpenDRC-AN

Page 1: ...Hong Kong Email info minidsp com Features and Specifications are subject to change without prior notice P 1 OpenDRC AN USER MANUAL Manual revision Description Date V1 0 Initial revision 13 07 2012 www...

Page 2: ...Plug in Architecture OpenDRC 2x2 plug in 9 3 1 1 Main Page 9 3 1 2 Preset Memory selection 9 3 1 3 Main Tab 9 3 1 4 Input channel mode 10 3 1 5 Parametric Equalizer 10 3 1 6 FIR Finite Impulse Respons...

Page 3: ...tically saved to both the DSP and the Flash for long term memory Once happy with your configuration you can disconnect the board from your computer since from this point on the audio configuration wil...

Page 4: ...hat you have the software correctly configured and won t cause any damage to your system Finally this unit is a very flexible board and 99 of typical questions we receive at the tech support departmen...

Page 5: ...typical connectivity diagram for a basic setup with analog inputs analog outputs To prevent any damage make sure the board is turned OFF before doing any connection modifications Note that the compute...

Page 6: ...3 Return cable Analog unbalanced Audio Unbalanced audio connectivity Neutrik 3pin XLR connector can be achieved by linking Pin1 Pin 3 together Minus PIN1 Minus PIN2 Positive cable PIN3 Minus cable Ano...

Page 7: ...under Windows Once the configuration finalized the plug in will automatically boot up 4 You can now connect the OpenDRC board to one of the USB 2 0 port of your PC The device will be recognized as a...

Page 8: ...ded to the current plug in firmware along with the current settings you have b Restore to Default With this option the software application resets all settings back to factory default and reload the f...

Page 9: ...emories for a quick reconfiguration of the processor Under each configuration all settings of the platform are saved Placed at the top of the user interface simply toggle between configurations by cli...

Page 10: ...band selection Select one of the 6 x Parametric Equalizers Filter type Select between Peak Low Shelf High Shelf Bypass Disables the equalization but doesn t reset the settings A handy tool to check th...

Page 11: ...atted binary bin file is being loaded into the software Such file is using IEEE754 single floating point format and typically comes from one of our software partners In a manual input the FIR coeffici...

Page 12: ...n will pop up to announce how many taps were loaded 3 1 6 2 Manual input mode If your 3rd party software provides the filter taps in a text format you can copy and paste them to the dialog box providi...

Page 13: ...sover IIR Controls for the Low High pass filters are available when clicking on the Xover crossover button The log scale graph gives you the equivalent response of the applied filter By pointing the m...

Page 14: ...his plug in For complexity reasons inter plug in compatibility is not supported 3 2 2 Save configuration Use this feature to save your audio settings configuration The following dialog box allows you...

Page 15: ...on Point the remote to the IR receiver and press the button to learn the command A dialog box will confirm a successful learning and a green arrow appears once the command learned In case the platform...

Page 16: ...e firmware is incompatible with the installed software Step 3 Click OK and a Upgrade utility will automatically pop up Step 4 Click on Open Hex file to browse to the firmware file and browse to the fo...

Page 17: ...ure all levels are correct It s now time to connect your output sources and get your unit up running again If you have any questions feel free to get in touch with us 4 Technical Specifications Item D...

Page 18: ...m Features and Specifications are subject to change without prior notice P 18 USB port USB port type B for real time control and firmware upgrade Power supply 5VDC single supply 600mA 5V 2 1 round plu...

Page 19: ...ick Restore to Factory default while connected to the unit to reset its configuration We first recommend that you unplug your amplifier to reconfigure your audio path 2 2 Cannot reload configuration C...

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