Beta test users and interested persons: Post your questions about our 2x2 add-on board for the DAC+ DSP here.
Date
Votes
71 comments
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HiFiBerry team Hi,
thank your for the feedback. We might consider it if the boards goes into series production.Best regards,
Daniel -
Charles Taylor Is there a data sheet available for the DAC/ADC add-on board for DAC+DSP that shows the jumper functions on the board or any other available header functions?
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Charles Taylor I’ll take that as a “no.”
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HiFiBerry team The jumper settings are the same as on the DAC+ ADC, please check out this data sheet.
https://www.hifiberry.com/build/documentation/datasheet-dac-adc/Best regards,
Daniel -
Christoffer Sawicki Is this the proper place to ask questions about USB-I2S (USB INTERFACE)? https://www.hifiberry.com/shop/boards/usb2i2s/ links here but the topic seems to be about another card.
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HiFiBerry team Just open a new topic for this.
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Christoffer Sawicki OK, I created https://support.hifiberry.com/hc/en-us/community/posts/360006309278-Beta-test-USB-interface-add-on-board using this post as a template. Maybe you can update the link at https://www.hifiberry.com/shop/boards/usb2i2s/?
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Mitchel Wolos Just received my board. Any instructions? I’m assuming I need pins to solder into the dsp board for the ribbon cable?
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HiFiBerry team Yes, that's right. Solder the header and connect both with the ribbon cable.
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Mitchel Wolos Was a header included? I didn’t receive one.
If I were to search for one locally. What would I ask for?
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HiFiBerry team Hi,
Unfortunately this isn't included. Just ask for a normal 2x8 pin male header ion 0.1"/2.54mm pitch.
Best regards,
Daniel -
Mitchel Wolos Would it be possible to use a second add on board and connect the input to the 3rd data output of the DSP board?
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HiFiBerry team Hi,
in general, yes, but you need to create a cable for this by yourself as you have to connect it to other pins.
Best regards,
Daniel -
francis66 hey there, just received my dac + dsp / adc add on,
id like to add 6.35 mm jack inputs, i see that the add on board has in and out pins - so its ideal, my question is however: will everything i send to the input and process in the DSP be sent to the add on output as well per default? or i need to configure this?
thanks -
HiFiBerry team Hi Francis,
if you want to process something in the DSP, there is no "default". You need to connect the inputs and outputs to your processing algorithm in your SigmaStudio project.
Best regards,
Daniel -
francis66 hey there, another quick question, is it possible to add balanced input to the adc add on?
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HiFiBerry team Unfortunately this is not possible.
Best regards,
Daniel -
Sorin Hi.
Is it possible to use Raspberry Pi + a HiFiBerry DAC + USB interface ? So I can switch between Volumio and USB input ?
Thanks,
/Sorin
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HiFiBerry team Hi,
this is not possible. You can either plug the DAC into the USB board or the Raspberry Pi, not both.
Best regards,
Daniel -
msquared I am building active speaker crossovers and need more than 4 channels which the DSP supports. Several others have also asked about stacking add-on boards, your response is this requires a custom fabricated cable. I understand, and that's probably what I will do. But there is a LOT of empty space on this PCB. Can I propose you add traces to (empty) through-holes for the end user to solder a header and thereby daisy chain a second DAC/ADC add-on board to achieve 6 channels of output? That really shouldn't add cost to the product, and would be a much better solution for customers (like me) who want another 2 channels out.
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msquared I've ordered 2 add-on boards and am fabricating the cable. This could be much easier than I thought, just a few wire twists in the ribbon cable. Please correct me if I get any of this wrong:
-Custom cable brings all pins @ DSP up to the same pin #s @ add-on board #1 (basically a standard cable here is connecting this DAC to DSP Port 1)
-Custom cable brings pins 1/2/3/4/8/12 @ DSP up to same pin #s @ add-on board #2
-Custom cable brings pins 9/10/11 @ DSP up to pins 5/6/7 @ add-on board #2 (thereby connecting this DAC to DSP Port 2)
-Custom cable leaves add-on board #2 pins 9/10/11/13/14/15 unconnected (the ADC cannot be used on add-on board #2)
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Marcel du Bois Hi Team,
Is there a driver available that supports I2S audio input for the DAC+ DSP?
I assume the hifiberry-dacplusdsp overlay can be used for this?
Regards,
Marcel
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HiFiBerry team HI,
yes, that's the correct one. However, you will also need a DSP profile that routes some thing to the Raspberry Pi. There is no fixed connection between an external input and the input on the Pi.
Best regards,
Daniel -
Marcel du Bois Hi Daniel,
Thanks, that's no problem. I know how to do that. Just wanted to make sure I start with the right driver.
Best Regards,
Marcel
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Andreas Werner USB 2.0 receptacle micro/mini as used on USB-I2S (USB interface) are outdated (old).
Please use USB Typ C.
https://de.wikipedia.org/wiki/Universal_Serial_Bus#USB_Typ_C
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Andreas Werner Success!
HiFiBerry DAC+ ADC HW 1.2 on top of USB-I2S acts/works immediately (no intervention necessary) as analog USB soundcard on a Arch Linux with kernel x86_64 Linux 5.4.10-arch1-1.
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Burnfield Hi, I'd like to ask some hints to build a 2.1 system for a living-room setup.
First installed the DAC+DSP to the new Raspberry 4. Installed Raspbian, dsptoolkit and FIR-profile -> sound out of the speakers was good. Then soldered the Beta test Add-on to the DAC+DSP. Tried the test-image found in Beta-test board instructions, but could not get any sound out using the test image. Figured this was because of the new Raspberry 4 and incompatibility with the test-image, as the solder SHOULD be good.
After soldering the sound was still good with the FIR-project. Now when trying to install 4-way profiles to utilize the additional RCA-outs (for subwoofer) I cant get any sound at all. Its like everything is muted. Any advice how to start going with this and to get sound out? The ultimate goal is to connect a subwoofer to the Beta-addon board and handle room correction via REW.
Goal:
Sound is coming to the DAC+DSP via Optical IN from a Preamp.
2 active speakers to the RCA-outs of DAC+DSP.
1 active subwoofer to a RCA-out in Beta-addon board.
Should I start with the 4way IIR project in Sigma Studio? Complete Sigma Studio newbie here. How to get sound out? And how to get sound out to subwoofer from a single RCA-out in Beta-addon board? Any hints to apply the room correction in this particular situation? Thanks in advance for any help, these are such cool products!
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HiFiBerry team The default profiles for the DAC+ don't support the additional 2 output channels. The easiest way to design a crossover is using the filter designer in HiFiBerryOS (https://hifiberry.com/hifiberryos)
The DSP profile that comes with the latest HiFiBerryOS also supports the 2 additional output channels of the DAC+ DSP add-on board -
Burnfield Thank you for the answer. There are going to be other use cases for the Raspberry, so I'd like to stick to Raspbian OS.
Do you have plans to publish the DSP profile supporting the additional output channels of the add-on board? Maybe add it to the dsptoolkit Github project?
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HiFiBerry team You can find the SigmaDSP project on Github:
https://github.com/bang-olufsen/create/blob/master/BeocreateUniversal-v10.dspproj
Note that this is a complex project, don't expect to simply deploy it and it will work as in HiFiBerryOS, parameters will be adapted automatically by the UI.
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