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The analog input circuit is a low noise balanced input with very high common mode rejection. The optional 
ADC module uses an AKM AK5397, considered by many to be the best ADC on the market. It has a S/N in 
excess of 127dB. This is 20-30dB better that most home theater oriented converters.

All of the data converters have a variety of internal filter choices. This include both sharp cutoff and 
minimum phase types. Minimum phase filters are favored for most applications, because they avoid pre echo
artifacts.

Minimal clock jitter is of prime importance for high quality audio. If a clock has excessive jitter, a perfect data
converter would be transformed into something mediocre. The right data at the wrong time is the wrong 
data! The dspMusik 2/8 uses a very low phase jitter clock with very careful routing to minimize reflections to 
each device. The SHARC DSP has eight ASRCs that provide jitter attenuation far better than a low noise PLL 
is capable of achieving. This is very helpful for rate conversions (generally upsampling) and is absolutely 
imperative for S/PDIF streams that are intrinsically noisy from a jitter perspective.   

The dspMusik 2/8 uses a standard IEC connector and can be powered with any 100-240 VAC 50/60 Hz 
mains source. All that is needed is the appropriate mains cord set. This makes the dspMusik 2/8 functional in 
international markets without special configuration settings. 

Software 

There are two primary ways to program the dspMusik 2/8. 

Most customers will opt for DSP Concepts' Audio Weaver. This is a graphical design program that includes as 
many as 400 optimized modules. Systems are designed in a drag and drop fashion to create signal flow.  
Audio Weaver runs natively on the SHARC DSP with optimized production quality modules. You design the 
signal processing system without the need for custom programming. Once you have your layout, you can 
adjust parameters in real time. For example, a loudspeaker designer can create a crossover design, make 
some measurements and listening tests, and then adjust parameters to fine tune the system without 
interruption of the test source or music. A run time version of Audio Weaver is included with the dspMusik 
2/8. This lets you design and distribute your application without buying additional tools or licensing. All you 
need is a Windows computer.

If you have an OEM version of the dspMusik 2/8, chances are this is how most of your system software was 
implemented.  The specific layout and tuning was done by the OEM, so that their system performs optimally.

The alternative method would be traditional programming in C or assembly. In this case, you would use 
either Analog Devices' Visual DSP++ or CrossCore Embedded Studio.  You would also want an emulator, 
either an ICE-1000 or ICE-2000. The older ADI emulators will also work with any of the dspblok 214xx 
boards. Danville supplies example code with device drivers for the converters and a basic talk thru shell 
program to get you started. 

dspMusik™ 2/8 User Manual

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Содержание dspMusik 2/8

Страница 1: ...Danville Signal Processing Inc dspMusik 2 8 High Performance DSP Audio Processor P N A 03708D P N A 03708E User Manual Version 2 10...

Страница 2: ...cification or documentation without prior notice Updated operating manuals and product specification sheets are available at our website for downloading This manual may contain errors omissions or typ...

Страница 3: ...Hardware 1 Software 2 I O Configuration 3 Balanced Audio ADC DAC Level Setting 3 dspMusik Display Encoder Operation 6 dspblok Options 9 dspblok 21469uac2 9 dspblok 21489uac2 9 Product Warranty 10 dsp...

Страница 4: ...s bareboard configurations with wiring details physical dimensions and similar information needed to implement the boards into a custom enclosure Most dspMusik 2 8 systems are resold by OEMs with opti...

Страница 5: ...ttings Software There are two primary ways to program the dspMusik 2 8 Most customers will opt for DSP Concepts Audio Weaver This is a graphical design program that includes as many as 400 optimized m...

Страница 6: ...fic purposes by the software For example in a DSP crossover some outputs are assigned to tweeters others to woofers etc If you have an OEM version of the dspMusik make sure you consult the OEM s instr...

Страница 7: ...Ground Output cables for unbalanced circuits leave Cold open In the professional audio case levels and interfaces are consistent With consumer gear everything gets a little sketchy Some consumer gear...

Страница 8: ...A 10dBV Consumer level is the nominal level between Hot to Gnd The Balanced labels are expected nominal levels from Hot to Cold A Balanced 10dBV signal would be 6dB lower than the Consumer 10dBV level...

Страница 9: ...lows Up or Right Arrows function the same as a clockwise rotation of the encoder Down or Left Arrows function the same as a counterclockwise rotation of the encoder Center functions like a normal clic...

Страница 10: ...P D I F M u t e d Source Selection Mode Source selection is invoked by a normal click of the encoder when starting in Volume Mode Rotate the encoder to the desired selection and press the encoder agai...

Страница 11: ...use the Apple Remote arrows to move through the various selections Generally pressing the encoder Normal Click will move you to a submenu or return you back to the main Settings menu A D C L e v e l...

Страница 12: ...k 2 8 Both of these products take advantage of XMOS s late generation XU208 processor that provides the USB Audio Class 2 support dspblok 21469uac2 The dspblok 21469uac2 is powered by the Analog Devic...

Страница 13: ...either repair or replace software media or firmware which do not execute their programming instructions due to such defects Danville Signal Processing does not warrant that operation of the software f...

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