background image

 

 

 

miniDSP Ltd 

 Hong Kong 

www.minidsp.com

 / Features and specifications subject to change without prior notice

 

1.2

 

D

IRAC 

L

IVE

 

The DDRC-88D processor executes Dirac Live® digital room correction, from 

Dirac Research

. Dirac Live’s mixed

-

phase filtering technology will improve the imaging of your system, minimize the effects of room modes and 
resonances, and improve dynamics and clarity. 

To accomplish its remarkable improvement in listening quality, the 

DiracLive

 application steps you through the 

procedure for taking measurements around your listening area. Dirac Live® employs a sophisticated analysis 
algorithm to make the optimal correction across the 

whole

 listening area, not just at a single point. The user has 

full control over the target frequency response. Measurements are taken with a calibrated acoustic 
measurement microphone, the miniDSP UMIK-1.

2

 

 

In addition to correcting magnitude response, Dirac Live® corrects the system’s 

impulse response

, which reflects 

how the system responds to a sharp transient such as a drumbeat. Reflections, diffraction, resonances, 
misaligned drivers, and so on, all combine to smear out the transient. Correcting the impulse response makes 
the speaker in the room behave much more like an ideal loudspeaker. The impulse response is a critical factor 
for accurate sound-staging, clarity and bass reproduction. 

 

Dirac Live calibration is described in the separate 

miniDSP Dirac Live User Manual

. 

 

2

 A UMIK-1 is included in the standard purchase price of the C-DSP 8x12 DL processor. 

Содержание DDRC-22

Страница 1: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without prior notice 1 DDRC 22 HIGH RESOLUTION AUDIO PROCESSOR WITH DIRAC LIVE TECHNOLOGY User Manual...

Страница 2: ...er Manual 30 June 2020 2 1 Corrected support link 6 July 2020 SUPPORTED OS If you are unable to run the above versions of the Windows or macOS operating system you will need to use the original versio...

Страница 3: ...1 Download and install the DiracLive application 10 3 1 2 Download the miniDSP software 10 3 1 3 Install the miniDSP software 11 3 2 macOS 10 14 Mojave and 10 15 Catalina 12 3 2 1 Download and install...

Страница 4: ...mproper use or incorrect configuration of this product Please read this manual carefully to ensure that you fully understand how to operate and use this product as incorrect use or use beyond the para...

Страница 5: ...computer we have included hyperlinked cross references throughout the manual In addition a table of contents is embedded in the PDF file Displaying this table of contents will make navigation much ea...

Страница 6: ...onances and room modes Reduce early reflections 1 1 TYPICAL SYSTEM CONFIGURATIONS The DDRC 22D is typically inserted into the digital signal chain just before D A conversion for example between one or...

Страница 7: ...le listening area not just at a single point The user has full control over the target frequency response Measurements are taken with a calibrated acoustic measurement microphone the miniDSP UMIK 1 2...

Страница 8: ...ital inputs of the DDRC 22D accept sample rates from 20 up to 216 kHz Note the digital inputs accept a stereo PCM digital signal only They do not accept encoded or multichannel digital audio such as D...

Страница 9: ...uired to perform acoustic measurements in your listening room and to generate and download the digital room correction filters to the DDRC 22D To configure the processor connect the USB port of the pr...

Страница 10: ...a name like DiracLive v3 0 0 Setup Windows exe We recommend that you accept the default installation settings Do not run the application yet 3 1 2 Download the miniDSP software If you purchased your p...

Страница 11: ...version 3 5 or later Latest version of Adobe Air Microsoft Visual C 2010 Redistributable Package for x86 32 bit Windows or x64 64 bit Windows 3 1 3 2 Install the plugin 1 Navigate to the Windows folde...

Страница 12: ...0 0 Setup Darwin app We recommend that you accept the default installation settings Do not run the application yet 3 2 2 Download the miniDSP software If you purchased your processor directly from min...

Страница 13: ...r of the software download 4 The installer is named DDRC 22 pkg To run it double click on it or right click and open as described above We recommend that you accept the default installation settings 5...

Страница 14: ...r volume Displays the current master volume setting Click and type here to change the master volume Mute Mutes all audio output Connect Connected Click on the Connect icon to connect to the DDRC 22D T...

Страница 15: ...processor Attenuation By default the DDRC 22 introduces 10 dB of attenuation in order to provide headroom for the EQ boost that Dirac Live may introduce If this is too much attenuation you can change...

Страница 16: ...miniDSP DDRC 22D is described in the separate miniDSP Dirac Live User Manual It can be downloaded from the DDRC 22D product page on our website Be sure to start the DiracLive application from within...

Страница 17: ...ly selected digital input Dirac Live Indicates that Dirac Live filtering is turned on 6 2 FRONT PANEL CONTROLS The DDRC 22D uses a minimalist physical control design with a single control knob To chan...

Страница 18: ...een loaded Vol Reduce or increase the volume Each press changes the volume in 0 5 dB Holding down a button will accelerate volume change to 3 dB steps Mute Mutes and unmutes audio output The DDRC 22 c...

Страница 19: ...216kHz Digital Audio Outputs Processed digital audio is available on all three outputs AES EBU on Neutrik 3 pin male XLR Isolated with digital audio transformer SPDIF on RCA connector Isolated with di...

Страница 20: ...Click on the Connect button The button will display a green tick if connection is successful 4 Click on the Upgrade Firmware button The DDRC 22D will be put into boot loader mode and the miniDSP upgra...

Страница 21: ...ould show Device attached 5 Click on the Import Firmware Image button and select the hex file located in the firmware folder of the download It will have a name like ENC_DDRC22_Ver2 26_SS hex 6 Click...

Страница 22: ...nt e g amplifiers 3 Check that downstream equipment e g amplifiers is not muted turned down or turned off 4 Quit DiracLive and start the DDRC 22 utility Click on the Connect button Then a Check the ma...

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