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PC-based DSP software
PC-based DSP software
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Old 14th February 2020, 09:46 AM   #1
de45dd is offline de45dd
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Join Date: Jan 2013
Default PC-based DSP software

Hello,

I am thinking about building an Computer-based DSP/Active-Crossover for my home cinema. My plan is to use an Dante-PCI-Card as Input and one or two USB-based oder Thunderbolt-based Audiointerface(s) with enough analog outputs like an Motu 24AO. So the hardware is not a problem but the Software instead.

Is there DSP-Software for computer available where I can do the following:

- Mixing, copying and Routing input channels to Outputchannels (for example one dante input should be copied to three outputs for three way active xover)
- Highpass, Lowpass and Bandpass filters for xover (Butterworth, Linkwitz up to 48db ocatve)
- 96khz / 24bit operation (maybe upsampling before)
- Low-Shelf and High-Shelf
- Linkwitz Tranform
- Parametric Equalizers

Is there I software (independent if Windows or Linux) available which can do that with standard Audio-Devices in the OS (Asio/Wasapi in Windows or alsa/pulse in Linux) with a graphical interface?

I know that brutefir and some linux command line tools can do it but something graphical (best woud be webbased via browser) would be better so you can do changes on the fly without writing a new config file for each simple change in the config.

So in principal a DSP software like you have it in DSP-Controllers like "Nadja under control" for my Nadja Modul or "Hypex-Filter-Design" (for the hypex modules) just for Computer (which will work with system audio devices as input and output).
Is there something available which can do this?
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Old 14th February 2020, 09:48 AM   #2
raelman is offline raelman  Spain
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Location: Malaga,Spain
take a look at dePhonica sound labs.
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Old 14th February 2020, 09:51 AM   #3
de45dd is offline de45dd
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Quote:
Originally Posted by raelman View Post
take a look at dePhonica sound labs.
cool the description looks nice but it seems to be limited to stereo, see description in home page:
Quote:
Two input channels and up to 8 output channels
I want to manage up to 16 input channels (Dolb Cinema)
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Old 14th February 2020, 10:01 AM   #4
arcgotic is offline arcgotic  Romania
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Location: Timisoara
Check Equalizer APO download | SourceForge.net
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Old 14th February 2020, 12:17 PM   #5
de45dd is offline de45dd
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Quote:
Originally Posted by arcgotic View Post
Hi Thanks for the great tipp.
I have downloaded and installed it and it looks promisiong.
But I donīt know if the tool is able to copy the input channels of differnt cards (not only one input card) and then after EQ and Crossover output that to channels of one or more output cards. Do you know if its possible?
Do you maybe have a sample config file for that?
I have seen there is a copy function but where do I select the different input and output cards?

EDIT: Donīt know if itīs possible to combine different cards. Anyway I have created a thread at the apo forum:
Equalizer APO / Discussion /
General Discussion: Combine channels of multiple input cards and output to multiple outputcards

Last edited by de45dd; 14th February 2020 at 12:31 PM.
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Old 14th February 2020, 12:19 PM   #6
arcgotic is offline arcgotic  Romania
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From what I know, it is not possible to combine multiple cards...
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Old 14th February 2020, 12:25 PM   #7
de45dd is offline de45dd
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ok any other recommondation? maybe linux based?
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Old 14th February 2020, 12:27 PM   #8
arcgotic is offline arcgotic  Romania
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Location: Timisoara
Check this thread
LADSPA plugin programming for Linux audio crossovers
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Old 14th February 2020, 12:41 PM   #9
de45dd is offline de45dd
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ok just found the "pulse audio crossover rack" which seems also to use LADSPA?
Anyone have used it?
Pulseaudio Crossover Rack - Online Help
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