CamillaDSP vs SotF

CamillaDSP is a free, open-source family of tools for real-time audio processing, including active crossovers, room correction, and configurable DSP pipelines. Its engine runs on Linux, macOS, and Windows, with audio backends including ALSA, PulseAudio, JACK, WASAPI, and CoreAudio. Pipelines combine filters and mixers, with channel mixing, resampling, dynamic loudness, and chains of filter stages. Filtering includes IIR biquads and FIR filters processed through FFT/IFFT convolution; room correction can use FIR filters alongside EQ and delay adjustments. CamillaGUI is a browser interface for building and editing pipelines, monitoring levels, and applying changes live. It runs from a local backend and does not need an internet connection. For automation, pyCamillaDSP connects to a running engine over its WebSocket API, which must be enabled with the -p flag. The software is available under GPL version 3 or Mozilla Public License 2.0; an ASIO backend build is GPLv3 only. Major releases may require configuration updates, while minor releases preserve compatibility.

SotF is a free, open-source audio player and optimizer for room and headphone sound, available for Linux, macOS and Windows. It plays FLAC, MP3, AAC, ALAC and Vorbis files, and lists more than 40 audio plugins for equalization, compression, limiting, upmixing, binaural processing, convolution and denoising. Room EQ analyzes room response and calculates correction filters for a plugin chain; using it requires a measurement microphone, its calibration file and connected speakers. Headphone EQ calculates parametric filters targeting the Harman curve for hundreds of measured headphone models. Spinorama EQ provides correction for thousands of speakers without a microphone. SotF can export settings for CamillaDSP, Equalizer APO, EasyEffects, Wavelet, PipeWire and Roon. On macOS, a CoreAudio HAL virtual device can route audio from other apps through a configured plugin chain. The app runs on the user’s machine and says it does not collect user data or listening history. Speaker EQ queries the public Spinorama API for the selected model. SotF is GPL-3.0 licensed and has no subscription.