Well, I haven't read all the document stuff, but how about a module (cheap FPGA) that would allow to use various "old" DACs for the output?
That is a very good suggestion. I will definitely consider it.
Absolutely. Usability is the main focus of dspControl.
Now I can give some values:
THD DAC: -103dB @ 1kHz, 0dBfs, fs=48kHz
THD ADC: -101dB @ 1kHz, 0dBfs, fs=48kHz
Latency: 1.125ms (talkthrough ADC->DSP->DAC)
There are currently three input/output boards planned. These boards should cover most cases e.g. active loudspeakers, DSP-powered preamp or loudspeaker management.
Of course you can make your on connector configuration. The boards are only there to make life easier.
Please take a look at the kickstarter page for details of the boards.
Best,
Raphael
If FIR could be implemented in a similar way as to how it works in Sigmastudio that would be great.
@DSPverden, Is there any way outside of Kickstarter to obtain a board? I'm not a huge fan of creditcards...
@DSPverden, Is there any way outside of Kickstarter to obtain a board? I'm not a huge fan of creditcards...
Yes. You can download all the sources from github, order the PCB and the components from any source you like and build it yourself.
The max. taps per channel depend on your configuration.
E.g. for just a stereo in stereo out you have 10000 taps per channel. For other channel numbers e.g. 4 channels you have 5000 taps per channel and so on. But the number of taps don't have to be equal.
E.g. for just a stereo in stereo out you have 10000 taps per channel. For other channel numbers e.g. 4 channels you have 5000 taps per channel and so on. But the number of taps don't have to be equal.
@dimitri: Hm, you should be able to load the schematics with the given libs in the repository. Anyway, I'll double check it tomorrow!
The last days we had a discussion in the German development group about Add-On boards to make connection easier. We came up with the following configurations:
For an active loudspeaker:
1x XLR Analog in
1x RCA Analog in
1x TOSlink in (for S/P-DIF via glassfiber)
1x RCA Digital in (for S/P-DIF via coaxial cable)
1x RCA Digital out (connect a subwoofer)
1x XLR Analog Out (connect a subwoofer)
1x USB
Volume pot
For a Pre-amp / 7.1-management:
8x XLR Analog Out, unbalanced (RCA) is possible too
8x RCA Analog In
8x XLR Analog In
4x RCA Digital In (for S/P-DIF via Cinch)
4x TOSlink Digital In ((for S/P-DIF via LWL)
1x USB in
All digital inputs are up for multiplexing.
Loudspeaker management:
8x XLR Analog Out
4x XLR Analog In, two ADCs parallel for a much better SNR
1x TOSlink in
1x TOSlink out
1x XLR Digital In AES/EBU
1x XLR Digital Out AES/EBU
1x USB
All TOSlink can be used with ADAT or S/P-DIF.
These configurations are focussing mostly on home hifi and home cinemas.
Schematics will be available soon, but there is nothing fancy on these boards. Jay did already an excellent job showing possible connection options!
If you need your own specific configuration you can still do that with the current freeDSP-aurora design without any of these add-ons. They will only be designed to make life easier.
For those who are curious: I hope to manage it to have everything on github next week. Still working hard for the final release!
For an active loudspeaker:
1x XLR Analog in
1x RCA Analog in
1x TOSlink in (for S/P-DIF via glassfiber)
1x RCA Digital in (for S/P-DIF via coaxial cable)
1x RCA Digital out (connect a subwoofer)
1x XLR Analog Out (connect a subwoofer)
1x USB
Volume pot
For a Pre-amp / 7.1-management:
8x XLR Analog Out, unbalanced (RCA) is possible too
8x RCA Analog In
8x XLR Analog In
4x RCA Digital In (for S/P-DIF via Cinch)
4x TOSlink Digital In ((for S/P-DIF via LWL)
1x USB in
All digital inputs are up for multiplexing.
Loudspeaker management:
8x XLR Analog Out
4x XLR Analog In, two ADCs parallel for a much better SNR
1x TOSlink in
1x TOSlink out
1x XLR Digital In AES/EBU
1x XLR Digital Out AES/EBU
1x USB
All TOSlink can be used with ADAT or S/P-DIF.
These configurations are focussing mostly on home hifi and home cinemas.
Schematics will be available soon, but there is nothing fancy on these boards. Jay did already an excellent job showing possible connection options!
If you need your own specific configuration you can still do that with the current freeDSP-aurora design without any of these add-ons. They will only be designed to make life easier.
For those who are curious: I hope to manage it to have everything on github next week. Still working hard for the final release!
Last edited:
Exciting news!
The feature you all have been waiting for has now been added to dspControl:
FIR filters.
You design your FIR filter with e.g. rePhase and import it then to freeDSP-Aurora. I produced a little demo video about that. The demo shows a 4-way loudspeaker with 4096 taps per channel.
Next week I'll upload the source codes to github.
Have fun!
Raphael
The feature you all have been waiting for has now been added to dspControl:
FIR filters.
You design your FIR filter with e.g. rePhase and import it then to freeDSP-Aurora. I produced a little demo video about that. The demo shows a 4-way loudspeaker with 4096 taps per channel.
Next week I'll upload the source codes to github.
Have fun!
Raphael
Hi! I'm a new person in digital sounds. I design boombox this freeDSP.I don't have a freeDSP board, for experiments'.(only in plan) Is it possible to input digital sound direct to freeDSP? I plan to use USB or SD card, this flac. mp3. or bluetooth.USB/sd /bluetooth >freeDSP>bi-amp> speaker.
I think for this used USB to I2C bridge module. If I am wrong, what i need for this.
Thanks in advance for the answer.
I think for this used USB to I2C bridge module. If I am wrong, what i need for this.
Thanks in advance for the answer.