Linux-audio-user

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7 participants
20705 discussions

[LAU] Buzzing noise from speakers when no audio app is loaded

by Chris Jölly

Hello, although it is not a linux audio related issue, maybe some of you guys have experience with it anyway :) I have a laptop, connected external speakers which use an external power supply. Furthermore I have an external monitor, which is connected to the power plug. Furthermore I have a desk lamp and a Roland SH-201. All devices are connected to the same power bar. Nothing fancy, it just has a switch to convieniently switch off everything at once. As audio system I use Pipewire. As long as no audio app is using the "Build-in Audio Analog Stereo" sink where the external speakers are connected to, there is a buzzing noise. I tried to figure out from where that noise originates, by pulling plugs, rearrange plugs, pulled plugs of the TV and the internet cable modem in the other room (which is anyway not linked to the same circuit/fuse), but the noise does not go away. In some situations it got even louder. As soon as I start an app that connects to the audio sink, like Ardour, a browser with a sound playing, a decend "pop" can be heard and the buzzing noise is gone. Audio arrives at the speakers just fine, no buzzing noise. Once the audio app disconnects, a few seconds later the buzzing noise is back. Some years ago I almost used the same equipment, same room, only the SH-201 was added, and the laptop connected to a docking station. That time that noise did not happen. What might be the issue? Any hint appreciated. KR, Chris

10 months, 1 week

[LAU] [Music] Behind Reality

by Jeanette C.

Hey hey, I just released a new piece: Behind Reality, an acoustic scene https://youtu.be/HgcOT5Q2zuE It is my attempt to recreate a strange dream. For those interested in the technical parts: there is a lot of procedural audio in there, i.e. completely synthesized "real" sounds, like birds, winds, vehicles etc. In case you are wondering: the piano, the vocals and the original footsteps, as heard in the first part of the scene, are samples. All later footstepts derive from samples, but have been augmented to resembel steps on resonant floors or carpet. I have also create a small webpage with the full Csound code, a collection of Csound tools to help create such scenes more easily. The tools are a work in development. Enjoy and best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c All you people look at me like I'm a little girl. Well did you ever think it be okay for me to step into this world. <3 (Britney Spears)

10 months, 2 weeks

[LAU] [ANN] Qtractor 1.5.4 - An Early Spring'25 Release

by Rui Nuno Capela

Hi everyone, Qtractor 1.5.4 (early-spring'25) released! Change-log: - Fixed non-zero clip offset conversion on tempo(BPM) time-scale changes. - MIDI clip step input and overdubbing now aggregated and fully undo/redo-able. - Allow MIDI step input to extend the clip length automatically; also avoid step input event duplicates (eg. playing chords in quick succession) leading to potential double-free segfault or crash. - Fixed MIDI track state when clips under record/overdubbing are simply removed. - Fixed all empty/void audio clips that are created when aborting an armed recording session. - MIDI clip editor (aka. piano-roll): simply allow a MIDI track to be a ghost of itself. - In addition to clips and markers, automation curves and tempo-map nodes now also contribute to the total session length and status. - Fixed command line parsing (QCommandLineParser/Option) to not exiting the application with a segfault when showing help and version information. Description: Qtractor [1] is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework [2]. Target platform is Linux, where the Jack Audio Connection Kit (JACK [3]) for audio and the Advanced Linux Sound Architecture (ALSA [4]) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio. Website: https://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net Project page: https://sourceforge.net/projects/qtractor Downloads: https://sourceforge.net/projects/qtractor/files - source tarball: https://download.sf.net/qtractor/qtractor-1.5.4.tar.gz - source package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.5.4-11.1.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.5.4-11.1.rncbc.suse.x86_64.rpm - AppImage [7] package: https://download.sf.net/qtractor/qtractor-1.5.4-11.1.x86_64.AppImage - Flatpak [8] package: https://flathub.org/apps/details/org.rncbc.qtractor Git repos: https://git.code.sf.net/p/qtractor/code https://github.com/rncbc/qtractor.git https://gitlab.com/rncbc/qtractor.git https://codeberg.org/rncbc/qtractor.git Wiki: https://sourceforge.net/p/qtractor/wiki/ - static rendering: https://qtractor.org/doc http://qtractor.sourceforge.net/doc https://qtractor.sourceforge.io/doc - user manual & how-to's: https://download.sf.net/qtractor/qtractor-manual-and-howtos.epub https://download.sf.net/qtractor/qtractor-manual-and-howtos.pdf License: Qtractor [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL [6]) version 2 or later. References: [1] Qtractor - An audio/MIDI multi-track sequencer https://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [3] JACK Audio Connection Kit https://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [6] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere https://appimage.org/ [8] Flatpak, next-generation technology for building and distributing desktop applications on Linux https://flatpak.org/ See also: https://www.rncbc.org/drupal/node/2756 Enjoy! - - - rncbc aka Rui Nuno Capela

10 months, 2 weeks

[LAU] [ANN] Vee One Suite 1.3.1 - An Early-Spring'25 Release

by Rui Nuno Capela

Greetings, The 'Vee One Suite', the 'gang-of-four' 'old-school' software instruments, * synthv1 [1] as a polyphonic subtractive synthesizer; * samplv1 [2] a polyphonic sampler synthesizer; * drumkv1 [3] as yet another drum-kit sampler; * padthv1 [4] a polyphonic additive synthesizer. Are here released for the New-Year'25 recycle... All still delivered in dual form: - a pure stand-alone JACK client with JACK-session [5], NSM (Non/New Session Management [6]) and both JACK MIDI and ALSA MIDI [7] input support; - a LV2 instrument plug-in [8]. Change-log: - Fixed command line parsing (QCommandLineParser/Option) to not exiting the application with a segfault when showing help and version information. The 'Vee One Suite' are free, open-source Linux Audio [10] software, distributed under the terms of the GNU General Public License (GPL) [11] version 2 or later. **synthv1 - an old-school polyphonic synthesizer [1] ** synthv1 1.3.1 (early-spring'25) is out! synthv1 is an old-school all-digital 4-oscillator subtractive polyphonic synthesizer with stereo fx. LV2 URI: http://synthv1.sourceforge.net/lv2 website: https://synthv1.sourceforge.io http://synthv1.sourceforge.net project page: https://sourceforge.net/projects/synthv1 downloads: https://sourceforge.net/projects/synthv1/files - source tarball: https://download.sf.net/synthv1/synthv1-1.3.1.tar.gz - source package: https://download.sf.net/synthv1/synthv1-1.3.1-8.1.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): https://download.sf.net/synthv1/synthv1-jack-1.3.1-8.1.rncbc.suse.x86_84.rpm https://download.sf.net/synthv1/synthv1-lv2-1.3.1-8.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/synthv1/synthv1-jack-1.3.1-8.1.x86_64.AppImage git repos: https://git.code.sf.net/p/synthv1/code https://github.com/rncbc/synthv1.git https://gitlab.com/rncbc/synthv1.git https://codeberg.org/rncbc/synthv1.git **samplv1 - an old-school polyphonic sampler [2]** samplv1 1.3.1 (early-spring'25) is out! samplv1 is an old-school polyphonic sampler synthesizer with stereo fx. LV2 URI: http://samplv1.sourceforge.net/lv2 website: https://samplv1.sourceforge.io http://samplv1.sourceforge.net project page: https://sourceforge.net/projects/samplv1 downloads: https://sourceforge.net/projects/samplv1/files - source tarball: https://download.sf.net/samplv1/samplv1-1.3.1.tar.gz - source package: https://download.sf.net/samplv1/samplv1-1.3.1-8.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/samplv1/samplv1-jack-1.3.1-8.1.rncbc.suse.x86_84.rpm https://download.sf.net/samplv1/samplv1-lv2-1.3.1-8.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/samplv1/samplv1-jack-1.3.1-8.1.x86_64.AppImage git repos: https://git.code.sf.net/p/samplv1/code https://github.com/rncbc/samplv1.git https://gitlab.com/rncbc/samplv1.git https://codeberg.org/rncbc/samplv1.git **drumkv1 - an old-school drum-kit sampler [3]** drumkv1 1.3.1 (early-spring'25) is out! drumkv1 is an old-school drum-kit sampler synthesizer with stereo fx. LV2 URI: http://drumkv1.sourceforge.net/lv2 website: https://drumkv1.sourceforge.io http://drumkv1.sourceforge.net project page: https://sourceforge.net/projects/samplv1 downloads: https://sourceforge.net/projects/drumkv1/files - source tarball: https://download.sf.net/drumkv1/drumkv1-1.3.1.tar.gz - source package: https://download.sf.net/drumkv1/drumkv1-1.3.1-8.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/drumkv1/drumkv1-jack-1.3.1-8.1.rncbc.suse.x86_84.rpm https://download.sf.net/drumkv1/drumkv1-lv2-1.3.1-8.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/drumkv1/drumkv1-jack-1.3.1-8.1.x86_64.AppImage git repos: https://git.code.sf.net/p/drumkv1/code https://github.com/rncbc/drumkv1.git https://gitlab.com/rncbc/drumkv1.git https://codeberg.org/rncbc/drumkv1.git **padthv1 - an old-school polyphonic additive synthesizer [4]** padthv1 1.3.1 (early-spring'25) is out! padthv1 is an old-school polyphonic additive synthesizer with stereo fx. padthv1 is based on the PADsynth algorithm by Paul Nasca, as a special variant of additive synthesis. LV2 URI: http://padthv1.sourceforge.net/lv2 website: http://padthv1.sourceforge.net https://padthv1.sourceforge.io project page: https://sourceforge.net/projects/padthv1 downloads: https://sourceforge.net/projects/padthv1/files - source tarball: https://download.sf.net/padthv1/padthv1-1.3.1.tar.gz - source package: https://download.sf.net/padthv1/padthv1-1.3.1-8.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/padthv1/padthv1-jack-1.3.1-8.1.rncbc.suse.x86_84.rpm https://download.sf.net/padthv1/padthv1-lv2-1.3.1-8.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/padthv1/padthv1-jack-1.3.1-8.1.x86_64.AppImage git repos: https://git.code.sf.net/p/padthv1/code https://github.com/rncbc/padthv1.git https://gitlab.com/rncbc/padthv1.git https://codeberg.org/rncbc/padthv1.git References: [1] synthv1 - an old-school polyphonic synthesizer https://synthv1.sourceforge.io http://synthv1.sourceforge.net [2] samplv1 - an old-school polyphonic sampler https://samplv1.sourceforge.io http://samplv1.sourceforge.net [3] drumkv1 - an old-school drum-kit sampler https://drumkv1.sourceforge.io http://drumkv1.sourceforge.net [4] padthv1 - an old-school polyphonic additive synthesizer https://padthv1.sourceforge.io http://padthv1.sourceforge.net [5] JACK Audio Connection Kit https://jackaudio.org/ [6] NSM, Non Session Management (legacy) http://non.tuxfamily.org/nsm/ New Session Manager https://new-session-manager.jackaudio.org/ [7] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [8] LV2, Audio Plugin Standard, the extensible successor of LADSPA https://lv2plug.in/ [9] AppImage, Linux apps that run anywhere https://appimage.org/ [10] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [11] GNU General Public License https://www.gnu.org/copyleft/gpl.html See also: https://www.rncbc.org/drupal/node/2755 Enjoy. - - - rncbc aka. Rui Nuno Capela

10 months, 2 weeks

[LAU] NeuralRack v0.1.4 released

by Hermann Meyer

NeuralRack is a Neural Model and Impulse Response File loader for Linux/Windows. It supports [*.nam files](https://www.tone3000.com/search?tags=103) and, or [*.json or .aidax files](https://www.tone3000.com/search?tags=23562) by using the [NeuralAudio](https://github.com/mikeoliphant/NeuralAudio) engine. For Impulse Response File Convolution it use [FFTConvolver](https://github.com/HiFi-LoFi/FFTConvolver) Resampling is done by [Libzita-resampler](https://kokkinizita.linuxaudio.org/linuxaudio/zita-resam… ![NeuralRack](https://github.com/brummer10/NeuralRack/raw/main/NeuralRack.png?raw=true) Neuralrack allow to load up to two model files and run them serial. The input/output could be controlled separate for each model. For tone sharping a 6 band EQ could be enabled. Additional it allow to load up a separate Impulse Response file for each output channel (stereo). Neuralrack provide a buffered Mode which introduce a one frame latency when enabled. It could move one Neural Model, or the complete processing into a background thread. That will reduce the DSP load when needed. The resulting latency will be reported to the host so that it could be compensated. Project Page: https://github.com/brummer10/NeuralRack Release Page: https://github.com/brummer10/NeuralRack/releases/tag/v0.1.4

10 months, 2 weeks

[LAU] [ANN] QmidiCtl 1.0.2 - An Early Spring'25 Release

by Rui Nuno Capela

Hello again! QmidiCtl 1.0.2 (early spring'25) is released! QmidiCt [1] is a MIDI remote controller application that sends MIDI data over the network, using UDP/IP multicast. Inspired by multimidicast [6] and designed to be compatible with ipMIDI for Windows [7]. QmidiCtl [1] was long ago designed for the Maemo [8] enabled handheld devices, namely the late Nokia N900 [9] and promoted to the Maemo Package [10] repositories. Nevertheless, QmidiCtl [1] may still be found effective as a regular desktop application and recently as an Android application as well. See also: QmidiNet [2] - A MIDI network gateway via UDP/IP multicast. Change-log: - Fixed command line parsing (QCommandLineParser/Option) to not exiting the application with a segfault when showing help and version information. - Prepping up next development cycle (Qt >= 6.8) Website: https://qmidictl.sourceforge.io http://qmidictl.sourceforge.net Project page: https://sourceforge.net/projects/qmidictl Downloads: https://sourceforge.net/projects/qmidictl/files - source tarball: https://download.sf.net/qmidictl/qmidictl-1.0.2.tar.gz - source package: https://download.sf.net/qmidictl/qmidictl-1.0.2-5.1.rncbc.suse.src.rpm - binary package: https://download.sf.net/qmidictl/qmidictl-1.0.2-5.1.rncbc.suse.x86_64.rpm - AppImage [11] package: https://download.sf.net/qmidictl/qmidictl-1.0.2-5.1.x86_64.AppImage - Android packages: https://download.sf.net/qmidictl/qmidictl-1.0.2-5.1.arm64-v8a.apk https://download.sf.net/qmidictl/qmidictl-1.0.2-5.1.x86_64.apk https://play.google.com/store/apps/details?id=org.rncbc.qmidictl Git repos: https://git.code.sf.net/p/qmidictl/code https://github.com/rncbc/qmidictl.git https://gitlab.com/rncbc/qmidictl.git https://bitbucket.com/rncbc/qmidictl.git License: QmidiCt [1] is free, open-source Linux Audio [4] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [5]. References: [1] QmidiCtl - A MIDI Remote Controller via UDP/IP Multicast https://qmidictl.sourceforge.io [2] QmidiNet - A MIDI Network Gateway via UDP/IP Multicast https://qmidinet.sourceforge.io [3] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [4] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [5] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [6] multimidicast - sends and receives MIDI from ALSA sequencers over network https://llg.cubic.org/tools/multimidicast [7] ipMIDI - MIDI over Ethernet ports - send MIDI over your LAN https://nerds.de [8] Maemo.org - Home of the Maemo community https://www.maemo.org [9] Maemo.org Wiki - Nokia N900 https://wiki.maemo.org/Nokia_N900 [10] Maemo.org - Downloads: QmidiCtl https://maemo.org/downloads/product/Maemo5/qmidictl [11] AppImage, Linux apps that run anywhere https://appimage.org/ See also: https://www.rncbc.org/drupal/node/2653 Enjoy && Have fun. -- rncbc aka. Rui Nuno Capela

10 months, 2 weeks

[LAU] [ANN] QmidiNet 1.0.1 - An Early Spring'25 Release

by Rui Nuno Capela

Hello! QmidiNet 1.0.1 (early-spring'25) is out! QmidiNet [1] is a MIDI network gateway application that sends and receives MIDI data (ALSA-MIDI [4] and JACK-MIDI [3]) over the network, using UDP/IP multicast. Inspired by multimidicast [8] and designed to be compatible with ipMIDI [9] for Windows. See also: QmidiCtl [2] - A MIDI Remote Controller via UDP/IP Multicast. Change-log: - Fixed command line parsing (QCommandLineParser/Option) to not exiting the application with a segfault when showing help and version information. - Prepping up next development cycle (Qt >= 6.8) Website: https://qmidinet.sourceforge.io http://qmidinet.sourceforge.net Project page: https://sourceforge.net/projects/qmidinet Downloads: https://sourceforge.net/projects/qmidinet/files - source tarball: https://download.sf.net/qmidinet/qmidinet-1.0.1.tar.gz - source package: https://download.sf.net/qmidinet/qmidinet-1.0.1-2.1.rncbc.suse.src.rpm - binary packages: https://download.sf.net/qmidinet/qmidinet-1.0.1-2.1.rncbc.suse.x86_64.rpm - AppImage [10] package: https://download.sf.net/qmidinet/qmidinet-1.0.1-2.1.x86_64.AppImage Git repos: https://git.code.sf.net/p/qmidinet/code https://github.com/rncbc/qmidinet.git https://gitlab.com/rncbc/qmidinet.git https://codeberg.com/rncbc/qmidinet.git License: QmidiNet [1] is free, open-source Linux Audio [6] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [7]. References: [1] QmidiNet - A MIDI Network Gateway via UDP/IP Multicast https://qmidinet.sourceforge.io [2] QmidiCtl - A MIDI Remote Controller via UDP/IP Multicast https://qmidictl.sourceforge.io [3] JACK Audio Connection Kit https://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [5] Qt framework, C++ class library and tools for cross-platform application and UI development http://qt.io/ [6] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [7] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html [8] multimidicast - sends and receives MIDI from ALSA sequencers over network https://llg.cubic.org/tools/multimidicast [9] ipMIDI - MIDI over Ethernet ports - send MIDI over your LAN https://nerds.de [10] AppImage, Linux apps that run anywhere http://appimage.org/ See also: https://www.rncbc.org/drupal/node/2752 Enjoy! - - - rncbc aka Rui Nuno Capela

10 months, 2 weeks

[LAU] [ANN] QXGEdit 1.0.1 - An Early Spring'25 Release

by Rui Nuno Capela

Hi all! QXGEdit 1.0.1 (early-spring'25) is released! QXGEdit [1] is a live XG instrument editor, specialized on editing MIDI System Exclusive files (.syx) for the Yamaha DB50XG [2] and thus probably a baseline for many other XG devices. Change-log: - Fixed command line parsing (QCommandLineParser/Option) to not exiting the application with a segfault when showing help and version information. - Prepping up next development cycle (Qt >= 6.8) Website: https://qxgedit.sourceforge.io http://qxgedit.sourceforge.net Project page: https://sourceforge.net/projects/qxgedit Downloads: https://sourceforge.net/projects/qxgedit/files - source tarball: https://download.sf.net/qxgedit/qxgedit-1.0.1.tar.gz - source package: https://download.sf.net/qxgedit/qxgedit-1.0.1-2.1.rncbc.suse.src.rpm - binary packages: https://download.sf.net/qxgedit/qxgedit-1.0.1-2.1.rncbc.suse.x86_64.rpm - AppImage [6] package: https://download.sf.net/qxgedit/qxgedit-1.0.1-2.1.x86_64.AppImage Git repos: https://git.code.sf.net/p/qxgedit/code https://github.com/rncbc/qxgedit.git https://gitlab.com/rncbc/qxgedit.git https://codeberg.com/rncbc/qxgedit.git License: QXGEdit [1] is free, open-source Linux Audio [4] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [5]. References: [1] QXGEdit - A Qt XG Editor https://qxgedit.sourceforge.io [2] Yamaha DB50XG (https://web.archive.org/web/20150607065739/) http://www.soundonsound.com/sos/1996_articles/may96/yamahadb50xg.html [3] Qt framework, C++ class library and tools for cross-platform application and UI development http://qt.io/ [4] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [5] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html [6] AppImage, Linux apps that run anywhere http://appimage.org/ See also: https://www.rncbc.org/drupal/node/2751 Enjoy! - - - rncbc aka Rui Nuno Capela

10 months, 2 weeks

[LAU] How do I create a FIR-filter with opensource tools?

by Michael Jarosch

Hi! Recently found "Camilla-DSP" https://github.com/HEnquist/camilladsp It's "a tool to create audio processing pipelines for applications such as active crossovers or room correction." I wanted to try out the room correction, but I have to create FIR filters for my speakers. And this is where I got stuck. My setup is as follows: Ubuntu Studio 24.10 RME HDSP 9652 (output 1-8 = 4xHeadphone, output 9-17 connected with amp) Dayton Audio 12-channel Amp (channel 9/10 not connected) 4 2-way-speakers (LF/HF), each chassis directly connected to the amp (channel 1 - 8) 1 Subwoofer, directly connected to the amp (channel 11/12 bridged) Tried to use REW, but I can't make it behave like an usual jack application ("use input 1, output 9"), instead it deals with cryptic sorround nomenclature and doesn't show up on qpwgraph… Now, as I understood it right, my steps are: * Sending a sweep to every speaker chassis, each, and record the output (of each one) through a measurement microphone. (Measurement samplerate = playback samplerate) * "Invert" each file * Make use of those files in "Camilla DSP" Steps missing? Or am I totally wrong, here? What tools can I use? Of course I have to limit the sweeps to frequencies and levels the speaker chassis will survive…! (Especially for the Tweeters) But one thing I don't understand is how the crossover frequencies are set… Maybe someones able to turn the light on… Thanks! And greets! Mitsch

10 months, 3 weeks

[LAU] The early beginning History of Digital Crossovers...

by Juan P C

Software/Hardware Hybrid: 1998 Yamaha DSP Factory DS2416 + AX16-AT 4-band eq, Hi & Low bands can be switched to Hi-pass & Low-pass Filters *Unknown slope. https://usa.yamaha.com/files/download/brochure/4/320264/ds2416.pdf http://www.oldschooldaw.com/manuals/cubase/CubaseSX/SX/PC-2002/cubaseSX_v1.… https://uk.yamaha.com/en/support/updates/index.html?c=proaudio&k=DS2416 Creamware Scope pci / Soniccore for macOS 9.2 / PowerPC G4 G5 but also worked on Windows, and OSX 10.4 Ensoniq Paris .. Software Only: 2006 - 2019 thuneau allocator for WinXP https://web.archive.org/web/20190716065853/http://www.thuneau.com/allocator… https://web.archive.org/web/20140530212406im_/http://www.thuneau.com/images… had -24dB/Oct, -42dB & -60dB/Oct Hardware: Yamaha D2040 "Digital" was interesting, F1040 "Analog" JBL DSC 260 & 280 "Digital" were rebranded BSS Omnidrive 260 & 280 JBL had Orange LCD display, BSS had Blue, maybe DACs were different JBL had 20-Bit, dbx 260 "very popular" had different DSP algorithms, included a digital version of the dbx 120xp / 120a sub-harmonic generator. dbx has many models of the 260, 360, and very large Pro models 480 / 4800... there were "rare" brands, like Dynacord, EV, etc... Analog: DOD 835 dbx 234xl JBL M553 / M552 Rane AC Ashly XR / SC Furman X-424 / X-324 / TX-3 Peavey Crown Crestb cpc 1234 Behringer Symetrix 524e were the "go to" UREI 525 was more rare, BSS FDS-318 was the most desired analog crossover from BSS. all other Analog crossovers from BSS had Fixed resistor network cards, 318 was variable. Klark Teknik DN800 was also fixed network cards, DN 8000 was "Digital" QSC had an Optional Add-On Crossover Card for PLX, DCA & PL2 amplifiers, similar was included by default in PL2A Peavey CS had "filter plug type crossovers" like vacuum tubes, but pre-made crossovers. some speaker brands have its own crossover, like Yorkville, Apogee audio, Bose. Crossovers could be done "Analog" Horn loaded loudspeakers, increasing the front chamber of the speaker before the Horn Throat. creates a natural roll off in the highs. Horns are "Band-Pass", and can be "Tuned". Most Pro Audio Class-D amplifiers have DSP built-in, to replace external digital crossover units "lower cost". Hardware outlast Software, Software is Vaporware. Hybrid depends, sometimes 60/40 other times: 40/60. for example: RME hdsp9632 pci card works flawless but... Linux source code has small bugs since Ubuntu 13 probably Cosmic Ray Flip type, bug accumulate, becoming almost unusable in 20.04 LTS with Alsa driver. Most Analog crossovers & eqs emulate Coils / transformers using Op-amps + capacitors. most have Servo-Balanced I/O's to emulate Balanced I/O Transformers. everything is an emulation of an emulation. LOL

10 months, 3 weeks

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