DaytonAudio DSPB Series, Руководство пользователя

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C. Example – 2.0 Channel Sigma Studio Project.
This basic example project can be used with a DSPB-250, DSPB-K/KE, or even with a DSPB-100 + KAB-
100M (for a higher powered 2 channel system, and or to add Bluetooth to the system). Follow the quick
start guides above for your particular setup, and then read the ICP1 Sigma Studio guides above for how
to use the project file
“ 2.0 System.dspproj” , which is available as part of a zip of all project files on the
product page. See below for a description of each labelled section, and note that this is only an example
of what you can do in SigmaStudio. You are encouraged to explore the program yourself, and also to
view other ADAU1701 projects and advice that can be found by searching the web.
A. Input – Inputs 0 and 1 will correspond to the left and right channel of any audio input. For this
example, we assume a Bluetooth KAB board is not connected, so this input will correspond only
to the 3.5 mm jack hooked up to J6.
B. Gain Control – This master gain control is connected to POT1 on the DSPB.
a. It is recommended to make gain controllable with hardware, but this could be changed
to a slider type of control if desired.
b. If you want to use a different potentiometer for master gain, simply change AUX_ADC_0
to any of the other options in the dropdown menu.
C. EQ Section – SigmaStudio has many possibilities for this section, available by navigating through
the Tree Toolbox and paying special attention to the filters section. The parametric EQ found in
Filters > Second Order > Multichannel allows for visual adjustment of filters and is what we use
here as it is the most user friendly, but there are many other ways to achieve EQ. Click the blue
icon in the block
to adjust the PEQ.
a. Note: You might need to reflash your board by hitting the “Link Compile Download”
button to hear the results of adding a new filter in the PEQ mode.
b. Results with this PEQ can be dramatic. Take caution to avoid overloading speakers.
c. Warning – Read the warning at the beginning of section 3 about this block.
D. Filter Section – Here we have a high pass filter on each channel, acting as a subsonic filter to get
better output out of our ported speakers, but remove this filter altogether if it does not fit your
speakers.