Active Crossover
A multi-channel DAC and the appropriate software allows you implement active crossover on a PC.
The Building of a Pure Digital System by Arthur Cheng gives a detailed description how to do it.
CamillaDSP
A tool to create audio processing pipelines for applications such as active crossovers or room correction. It is written in Rust to benefit from the safety and elegant handling of threading that this language provides.
Supported platforms: Linux, macOS, Windows.
Audio data is captured from a capture device and sent to a playback device. Alsa, PulseAudio, Jack, Wasapi and CoreAudio are currently supported for both capture and playback.
The processing pipeline consists of any number of filters and mixers.
Mixers are used to route audio between channels and to change the number of channels in the stream. Filters can be both IIR and FIR. IIR filters are implemented as biquads, while FIR use convolution via FFT/IFFT.
A filter can be applied to any number of channels. All processing is done in chunks of a fixed number of samples. A small number of samples gives a small in-out latency while a larger number is required for long FIR filters.
Freeware
camillaNode is a web based interface to control CamillaDSP and use it as an Equalizer.
(((acourate)))® delivers both state-of-the-art digital room-correction and speaker driver-time-alignment, linearization & crossover execution in an upgradable, customizable pc-based solution.
Generates correction filters for a wide range of convolution applications like BruteFIR, Convolver, X-volver, Foobar2000, Inguz Room Correction
A single user license for private, non-commercial use of (((acourate)))® is 340 € (incl. VAT)
You can do a lot with Acourate
- Create a digital crossover..
- Time align the drivers.
- Linearize each driver.
- Room correction.
Digital Room Correction with AudioVero's Acourate - Archimago's Musings