mikebrady/shairport-syncFork
Shairport Sync
Shairport-sync is an AirPlay audio streaming receiver that enables the reception of wireless audio streams from Apple devices and routes them to system sound servers or hardware devices. Its primary purpose is to facilitate multi-room audio synchronization, aligning output across multiple playback devices to ensure content plays in unison.
The project distinguishes itself through advanced digital signal processing, including impulse-response convolution filtering to correct frequency response. It provides precise audio timing adjustments to compensate for amplifier latency and offers extended range volume attenuation to prevent signal distortion.
The system also covers smart home integration and remote management via MQTT, D-Bus, and MPRIS interfaces. These capabilities allow for the export of track metadata and cover art, as well as the remote control of playback status through external message brokers and system buses.
Features
- Audio Output Synchronization - Aligns audio output with source timing to keep multiple playback devices in unison across a network.
- AirPlay Receivers - Enables receiving audio streams from Apple devices and routing them to system sound servers or hardware devices.
- Audio Hardware Routing - Routes transcoded audio streams to hardware devices or system sound servers for final output.
- Playback Synchronizers - Aligns audio output with source timing to ensure multiple playback devices play content in unison.
- Audio Processing - Transcodes audio and applies digital processing to adjust output rates, formats, and channels.
- Latency Compensation - Shifts output timing forward or backward to compensate for amplifier latency and synchronize devices.
- Convolution Filters - Corrects audio signals by applying digital filter files to achieve a flat frequency response across speakers.
- Networked Audio Synchronization - Aligns audio output across multiple playback devices to ensure music plays in unison without lag.
- Digital Signal Processing Libraries - Corrects audio signals using impulse response filter files to achieve a flat frequency response.
- Smart Home Orchestration - Connects audio playback and controls to a smart home system using MQTT or D-Bus for automation.
- Real-time Filter Management - Enables enabling or disabling convolution and updating filter files in real-time using a system bus interface.
- Remote Playback Receivers - Manages playback and track information from external software using MQTT, D-Bus, and MPRIS interfaces.
- Audio Volume Controls - Provides precise attenuation and extended range controls to adjust volume levels and prevent signal distortion.
- MQTT Messaging Integrations - Provides integration with MQTT brokers to coordinate playback status and remote management for smart home automation.
- Message Bus Integrations - Exposes playback controls and metadata to system-level services via D-Bus for remote management.
- Audio Tools - AirPlay audio receiver for streaming sound to the computer.
- Communication and Protocols - AirPlay 2 audio receiver implementation.
- Media & Communication - Stream music to Alexa devices.
