Re: Successful minimalist configuration for 384kHz / 0.25ms ultra-low latency audio using internal Carla/LV2 node

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  Subject    : Successful minimalist configuration for 384kHz / 0.25ms ultra-low latency audio using internal Carla/LV2 node
  Message-ID : <[email protected]>
  Date & Time: Thu, 25 Jun 2026 20:35:33 +0900

[MN] == Masaru Nomiya <[email protected]> has written:

MN> Hello,

MN> I posted I posted the following on the Pipewire community.

MN> Hello PipeWire community,

MN> I would like to share a successful, minimalist configuration to
MN> achieve a pristine 384kHz / 0.25ms (96 samples) ultra-low latency
MN> audio environment on openSUSE Tumbleweed, paired with a Marantz
MN> HD-AMP1 USB-DAC.

MN> Previously, I struggled with D-Bus portal errors and device conflicts
MN> when completely masking pipewire.socket to run pure jackd. However, I
MN> realized that we can completely integrate a high-performance
MN> convolution filter directly into the PipeWire graph seamlessly by
MN> utilizing `context.modules` to load Carla as an internal LV2 node.

MN> Here is the simple configuration I added to my configuration file:


MN> "context.modules": [
MN>     {
MN>         "name": "libpipewire-module-adapter",
MN>         "args": {
MN>             "factory.name": "support.node.driver",
MN>             "node.name": "syncarla",
MN>             "node.description": "Carla Convolver Node",
MN>             "media.class": "Audio/Filter",
MN>             "lv2.plugin": "carla",
MN>             "lv2.label": "convolver",
MN>             "lv2.control": {
MN>                 "Process Mode": "Continuous Rack",
MN>                 "Engine": "Jack",
MN>                 "Gain": 1.0000,
MN>                 "Mode": 1.000,
MN>                 "Volume": 100,
MN>                 "Speed": 1.000,
MN>                 "Mltplr": 1.0000,
MN>                 "Strt vl": 0.000,
MN>                 "Octaves": 0.0000,
MN>                 "Smtns": 0.0000,
MN>                 "stbtt_PackSetOversampling": 8,
MN>                 "NumVoices": 32,
MN>                 "MIDI Contrl Channel": 8,
MN>                 "volume": 100
MN>             }
MN>         }
MN>     }
MN> ]

MN> This enables Jack on PipeWire.

MN> Name the file “carla.conf” and place it in
MN> ~/.config/pipewire/pipewire.con.d/.

MN> Best Regards & Good Night.

MN> --
MN> ┏━━┓彡   Masaru Nomiya                     mail-to: nomiya @ ab.auone-net.jp
MN> ┃＼／彡
MN> ┗━━┛       "People need to manage the competing dynamics of relying on
MN> 	        generative AI and staying mindfully vigilant."
	       
MN>   -- "Is AI ruining our skills? Early results are in D and they're
MN>   not good" Nature --