Search found 222 matches

by Drumfix
Sun Jun 16, 2019 3:42 pm
Forum: System Tuning and Configuration
Topic: Some questions about interrupts and usb
Replies: 2
Views: 77

Re: Some questions about interrupts and usb

The short answer: Yes, you need usb 3.0 card. The long answer: You are using an xhci host controller. While this host controller allows up to 8 MSI interrupts, the linux host controller driver allocates only 1. The usb 2.0 root hub you see is integrated in the xhci host controller, so it is also usi...
by Drumfix
Thu Jun 13, 2019 5:44 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 229
Views: 24681

Re: Ultralite AVB

i meant the first of the available AVB streams.
by Drumfix
Thu Jun 13, 2019 6:03 am
Forum: Computer Related Hardware
Topic: USB Audio Interface JACK Xruns on Linux but not on Windows
Replies: 42
Views: 859

Re: USB Audio Interface JACK Xruns on Linux but not on Windows

Then it looks as if ALSA does not use implicit feedback for synchronization of input and output for this device. Changing this requires a kernel patch.
by Drumfix
Wed Jun 12, 2019 5:27 pm
Forum: Computer Related Hardware
Topic: USB Audio Interface JACK Xruns on Linux but not on Windows
Replies: 42
Views: 859

Re: USB Audio Interface JACK Xruns on Linux but not on Windows

Use 48 or 96 samples with 3 buffers. And forget about the reported latencies on W10, except if they were measured with the RTL utility from oblique audio.
by Drumfix
Wed May 29, 2019 5:23 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 229
Views: 24681

Re: Ultralite AVB

cc1: error: code model kernel does not support PIC mode This is a bug on newer gcc versions. /bin/sh: 1: [: -ge: unexpected operator You are not using bash as your standard shell. Please try the updated Makefile and report back, preferably by opening an issue on github.
by Drumfix
Tue May 28, 2019 5:36 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 229
Views: 24681

Re: Ultralite AVB

You find the code here https://github.com/Drumfix/avb4linux Special notes: - at present only 1 8-in and 1 8-out stream is supported (rhe dirst of the interface - all 8 channels of the szream going to the computer must be connected - You have to edit the file kernel_module/avb-config.h and replace th...
by Drumfix
Mon May 27, 2019 5:40 am
Forum: Newbies
Topic: Digigram sound card with Debian, anybody ?
Replies: 8
Views: 231

Re: Digigram sound card with Debian, anybody ?

4.9.0-4-amd64 != 4.9.0-9-amd64

Btw, if you compile a module for the currently running kernel, then

Code: Select all

make


is enough.
by Drumfix
Sat May 25, 2019 6:00 pm
Forum: Newbies
Topic: Digigram sound card with Debian, anybody ?
Replies: 8
Views: 231

Re: Digigram sound card with Debian, anybody ?

First of all make sure your kernel-headers are installed. Then: git clone https://github.com/Digigram-audio/Alsa.git cd Alsa git checkout v3.0.7 cd LX Add following 3 lines to the file "lxcommon.h": #define PCI_SUBDEVICE_ID_DIGIGRAM_LXMADI_SUBSYSTEM 0xca21 #define PCI_SUBDEVICE_ID_DIGIGRAM...
by Drumfix
Wed May 15, 2019 5:46 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 229
Views: 24681

Re: Ultralite AVB

I can put up the AVB code somewhere during the weekend. A NIC with intel i210 is currently still required.
by Drumfix
Sun Apr 21, 2019 4:57 pm
Forum: Developer's Section
Topic: eBPF and in-kernel audio DSP?
Replies: 1
Views: 531

Re: eBPF and in-kernel audio DSP?

I think you can use kernel_fpu_begin/kernel_fpu_end around dsp code in a kernel thread since at least kernel 2.6, even directly in the interrupt thread of your sound device.
by Drumfix
Sat Apr 06, 2019 7:17 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 229
Views: 24681

Re: Ultralite AVB

Does it work, if you set a samplerate of 192000 ? If not, try the 64 channel quirk with 44100 and set 64 channels in/out in jack. Or, if you just want the patched class compliant mode, then do not copy any of the quirks into the quirks-table.c and instead, in the patch file i gave you earlier, chang...
by Drumfix
Sat Apr 06, 2019 9:11 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 229
Views: 24681

Re: Ultralite AVB

Don't worry, we will get your device to run. Based on the jack output i assume your device is set to UAC mode instead of the proprietary mode. After the device booted up you must run the curl commands to set the device into proprietary mode (with the ip address of your own device). The value set for...
by Drumfix
Tue Apr 02, 2019 4:23 pm
Forum: Recorders & Sequencers
Topic: Looking for a new sample editing tool
Replies: 39
Views: 1422

Re: Looking for a new sample editing tool

zita-at1 ?
ReaPitch plugin in reaper (has several algorithms) ?
by Drumfix
Sun Mar 31, 2019 6:00 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 229
Views: 24681

Re: Ultralite AVB

For 4.19 the first two hunks should be the attached patch.
by Drumfix
Tue Mar 12, 2019 11:02 pm
Forum: Computer Related Hardware
Topic: Linux and Ethernet based audio interfaces
Replies: 1
Views: 385

Re: Linux and Ethernet based audio interfaces

My verdict:

- proprietary bullshit
- not invented here syndrom
- not compatible to any established standard
- the sooner the companies offering this piece of shit go bankcrupt, the better

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