StageConnect is OpenSource – and the X32 knows it
Do you want to know more about StageConnect? Its a connection to transmit 32 uncompressed audio-channels via a single XLR cable. StageConnect is based on A2B, the Automotive Audio Bus (A2B).
OpenX32: reverse engineering a complex system
A kind of diary of reverse engineering the Behringer X32 to finally process audio with my own audio algorithms within the original audio DSPs… My original plan was to publish a new blog-entry every week. But my current projects got much bigger than I’ve initially planned. So for the sake of the projects, I will…
Developing PCI Cards with Plug&Play (Part 3)
In this final episode I’ll show how I implemented data-exchange with my card using IRQ and the development of some ShellExtensions and ControlPanel-applets for Windows98. Fixing the SRAM Last time I had some problems with my second SRAM producing noise. It turned out, that I missed two additional lines in the documentation: besides the chip-select…
Developing PCI Cards with Plug&Play (Part 2)
In part 2 of this series I will show my progress on developing a DIY PCI Card using Alteras FLEX10K FPGAs. Last time I reverse-engineered an old Altera development-board I’ve found on eBay. Unfortunately there was absolutely no documentation about this card so I had to track all traces on the PCB by myself. Of…
FPGA-based FOC for 6-phase BLDC
Motorcontrollers are everywhere, cheap and reliable, but building a field-oriented control (FOC) from scratch to understand the details is a nice challenge. So I accepted the challenge and implemented a full-featured FOC within an FPGA. If you want a ready-to-go controller for a motor-application, you can take a dedicated microcontroller like the TI C2000 with…
FPGA-based Audio-over-IP
Ethernet on Microcontrollers is available without problems: using FreeRTOS or the Arduino-libs is always a good start. But for FPGAs? I was shocked how expensive Ethernet is for FPGAs – but I found a good solution… In 1997 I bought my first NE2000-compatible ISA-Ethernet-Card for my Windows 95 computer. Why? Well, not that my 13-year-old…
FPGA-Audiomixer: IIR-filter for EQs
Without the possibility to adjust the volume of individual frequency bands within an audio signal, modern audio would not sound the same. Today I’d like to show how I’ve implemented a EQ within my FPGA audio-mixer. In this blog-post I won’t describe the general idea of an EQ, because there are more capable persons available…
DIY Expansion Card for Behringer X32
Based on my Audioplayer-project I developed a DIY card for the Behringer X32. In addition to the youtube-video here you will find some more detailed information about this project and the implementation. Definition of reverse-engineering by Elliot J. Chikofsky: “Reverse-engineering is the process of analyzing a subject system to identify the system’s components and their interrelationships…
Testing FPGA Card for Behringers X32 and mixing a 64ch song
In this video I’m testing the DIY Expansion-Card for the Behringer X32 audio-mixing-console with the Room-EQ-Wizard-Software and I’m showing the new workflow using XTouch-Controllers and more things. With a live-mixed 64-channel song I’d like to celebrate 6.400 subscribers. Thank you so much for your interest, the support and the nice feedback via eMail or the…
FPGA-Audiomixer: Compressors and Noisegates
Implementing an audio-compression-algorithm in pure logic is a bit challenging as it uses a division. Time for some deep-diving into audio DSP with VHDL. Background As I’ve started implementing logic for the FPGA-Audiomixer, first I had not planned to implement more enhanced audio-functions. My primary goal was to understand how a volume-control could be done…