Sonos also has been using WiFi hardware with a proprietary protocol for ages. But, just like UPNP / DLNA, it is strongly media oriented.
It looks like this needs to be installed. I'm showing "no visible usbLooks like we have a regression on the USB descriptors for some reason. I'll have to sort that out.
In the meantime, simply grab this application, launch it and select "Weeb Labs DSPi (Interface 2)" from the dropdown box. Make sure "WinUSB" is selected next to the green arrow and then choose "Install Driver". Give it a few minutes to install.
Once installed, everything should be working and you should have two DSPi devices; one under "Sound, video and game controllers" and the other under "Universal Serial Bus devices".
You can then use the DSPi Console application. If it's already running, clicking the reconnect button in the lower left corner should establish a connection to the board.
Yes, you will need to do this. The USB descriptor bug will be patched in this evening's hotfix, which will also include user-configurable output pins.
The device selection needs to be changed to "Weeb Labs DSPi (Interface 2)" via the dropdown list. If it doesn't appear in the dropdown list, choose "Options", "Show All Devices" and then it should appear in the list.
It absolutely is. It’s easily fast enough to make video skipping and seeking around in audio feel nearly unnoticeable.
That's odd. Could you tell me which firmware version you have written to the Pico 2? It should be one of the ones with RP2350 in the name.
Sounds amazing - I'm getting my Pico2 next week!Thank you!
Yes, it can certainly function as two 4-way crossovers. Cardioid doesn't require FIR but it would increase the bandwidth of the cardioid behavior.
There will be a hotfix later this evening patching the USB descriptor bug, duplicating SPDIF 1 to pin 20 for backward compatibility and a few optimizations.
Chromecast, Wiim and probably a few other proprietory systems can synch several playback devices. Some guy on the Wiim forum measured synch jitter between two devices and concluded you can actually set up a crossover by streaming to several grouped devices, with each device (such as a Wiim Pro or a Wiim amp) covering one way. Wiim itself suggests using a group to do a multi-sub setup or get a sub channel on a device such as the Wiim Pro that does not have a sub out.
I haven't yet
As it stands, the DSPi firmware overclocks both the RP2040 and RP2350 to 288MHz. Higher overclocks are absolutely possible and would increase the available headroom substantially but the clock speed that I selected was based upon three important criteria:
For squared magnitude filters or (I believe) crossovers that sum to allpass, the "reverse IIR" algorithm described in this paper may be feasible. It shows how a time-reversed IIR approximation can be realized with cascaded sparse FIR filters. Implemented this way, a time-reversed one pole lowpass truncated to 2048 samples requires only 12 multiplies and 12 additions per input sample. Time-reversed IIR allpass approximations are possible as well, which could be used for phase correction of external crossovers.
To be clear, do you have both a Pico 2 and original Pico or is it the Pico 2 that appears in your sidebar despite working correctly?
When the Pico 2 no longer connects to Console, does removing and reinserting the USB enable it to reconnect? Additionally, does the audio device continue to work when Console will not connect?
That DAC is looking for I2S input. The current build of this project outputs SPDIF. That may change in the future but this DAC board won’t work for now.
