The topology is a logical map of the data paths and control nodes in the adapter circuitry. Two additional decisions involve how to present the adapter topology and pin data ranges to audio applications. For more information, see Introducing the WaveRT Port Driver. When designing a custom adapter driver that uses PortCls, the devices on the audio adapter are made available to applications using WaveRT. For more information about AVStream, see AVStream Overview. For more information about PortCls, see Introduction to Port Class. PortCls is the correct choice for most audio adapters. Both PortCls and AVStream are part of the Windows operating system. However, if a vendor-supplied custom audio driver is necessary, the vendor must choose whether the driver should be designed to work in conjunction with the PortCls system driver (Portcls.sys) or the AVStream class system driver (Ks.sys). The vendor does not need to provide a custom driver for a UAA-compatible audio device. Windows contains operating-system support for PCI, USB, and IEEE 1394 devices that conform to the Microsoft Universal Audio Architecture (UAA) guidelines. The first decision is whether to design an audio device that requires a vendor-supplied custom driver. Hardware vendors should make several design decisions before beginning development of a Windows-based audio hardware device. Note that downgrading may corrupt projects in some cases so I recommend backing up anything of importance before trying that.Windows Driver Model (WDM) audio drivers make use of the kernel streaming (KS) components, which operate in kernel mode and are part of the operating system. Have you tried different USB ports and cables? I would also recommend disconnecting any other USB peripherals from the computer while troubleshooting. Do you have any other USB drivers installed that could be conflicting? Could you try uninstalling them in that case? "We have not seen other reports of this issue, and I would at first hand suspect that it is either a potential driver conflict, an issue with your system, or (least likely) an extremely unusual hardware issue with the Digitone Keys. Here is the response I received (though they both work fine on his macbook pro). I even tried a friend’s digitone keys on my system which does the same thing. Since I did a complete reformat, and only installed the digitone keys driver on the fresh install, it is not something else in my system conflicting with the driver, nor does it make sense since all other elektron gear can select asio driver with no issue. They are saying noone else has reported the issue. I tried downgrading the firmware, and I get the same issue. I finally received another response after almost a month of nothing. ![]() I don’t see how just the asio driver not being accessible could be defective, but every other function with the USB port works fine. I use an rme babyface pro normally, and works perfectly normal with that, but I just want to make sure nothing is wrong since the asio driver is not accessible no matter what I try. I pick asio in audio drivers, it shows digitone, I select it it and it just says USB hardware not found, even though it works in windows just fine with everything else. I’ve owned pretty much all the modern elektron units (all sold but currently rebuying lol), and don’t remember having this issue before. Weird thing is that everything else works fine with overbridge, USB audio, and I can select the digitone as a sound card in windows /ableton, but cannot use the asio driver for digitone, so the latency is slow if trying to use it as a sound card. I’ve even reformatted my pc to try only installing the overbridge/digitone drivers and it simply cannot select Asio digitone driver no matter what. I’m just wondering if anyone else is having an issue selecting the ASIO digitone driver in Windows 10 and Ableton 11? I’ve tried everything from setting the usb overbridge mode on/off to midi/audio, all different USB ports and cables(using the Elektron braided cable that came with it).
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