About this project

APM44 Bridge provides a virtual 44.1 kHz Core Audio output device for macOS. It uses a user-space daemon to perform resampling via libsamplerate and manage clock drift, routing audio from a 44.1 kHz source (such as Cubase 15) to a physical 48 kHz endpoint (specifically AirPods Max USB-C). Key components include: - A HAL driver (APM44Bridge.driver) that creates the virtual output device. - A bridge daemon (apm44-bridge) for conversion and drift control. - A menu bar application for managing latency presets, virtual-device modes, and first-run checks. While primarily targeted at Cubase 15, the project maintains a validation matrix for other DAWs like Logic Pro and Ableton Live. It also supports an optional fallback routing path using BlackHole.