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BlackHole - Zero Latency Audio Loopback Driver for macOS
BlackHole is a modern, open-source macOS audio loopback driver that enables applications to pass audio to other applications with exceptional speed and zero additional latency. Ideal for routing system audio, streaming setups, and complex audio workflows.
C
Added on 2025年6月23日16,731
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LanguageProject Introduction
Summary
BlackHole is a free, open-source virtual audio driver for macOS that allows audio signals to be routed directly from one application to another. It functions like a virtual audio cable, enabling flexible inter-application audio transfer with ultra-low latency.
Problem Solved
Routing audio between different applications on macOS can be cumbersome, often requiring complex aggregate devices, external mixers, or introducing significant latency and potential loss of audio quality. BlackHole provides a simple, stable, software-only solution to create virtual audio paths.
Core Features
Virtual Audio Device
Provides a virtual audio device in macOS Sound settings, making it easy to select as an input or output.
Zero Additional Latency
Allows audio to be passed between applications without any noticeable delay.
Multi-Channel Support
Available in various channel counts (e.g., 16, 64) to suit different needs, supporting complex routing scenarios.
Native macOS Integration
Built specifically for macOS using Core Audio frameworks for optimal performance and stability.
Tech Stack
C++
Objective-C
macOS Core Audio
Use Cases
BlackHole facilitates various audio workflows, from simple screen recording to complex multi-application audio routing:
Capture System or Application Audio
Details
Route your computer's entire audio output (system sounds, browser audio, game audio) or the output of a specific application into recording or streaming software like OBS, QuickTime, or Audacity.
User Value
Easily record tutorials, presentations, gameplay, or capture audio for podcasts/streams without needing physical loopback cables or mixers.
Inter-Application Audio Routing
Details
Set BlackHole as the output for one application (e.g., a music player or software instrument) and the input for another (e.g., a DAW or effect host) to process or record audio directly between them.
User Value
Facilitates complex audio setups, allowing flexible routing of signals between different audio production or processing applications.
Enhance Aggregate Devices
Details
Combine BlackHole with other physical audio devices to create custom Aggregate Devices in macOS Audio MIDI Setup, offering more flexible input/output configurations.
User Value
Create tailored multi-device audio setups, integrating virtual routing with physical hardware inputs/outputs.
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