https://github.com/ExistentialAudio/BlackHole
BlackHole is a modern MacOS virtual audio driver that allows applications to pass audio to other applications with zero additional latency.
Features
Supports 16 audio channels.
Customizable to 256+ channels if you think your computer can handle it.
Supports 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, and 192kHz sample rates.
No additional driver latency.
Works on macOS 10.10+ including macOS 10.15
Catalina
Easy Installation Instructions
- Download BlackHole.vx.x.x.pkg
- Close all running audio applications
- Right-click on package and select open
- Open and install package
- Restart Computer (Catalina Only)
Usage Examples
Record System Audio（内录）
- Open Audio MIDI Setup
- Right-click on "BlackHole" and select "Use This Device For Sound Output"
- Open DAW and set input device to "BlackHole"
- Set track to input from channel 1-2
- Play audio from another application and monitor or record in your DAW.
Route Audio Between Applications（内放）
- Set output driver to "BlackHole" in sending application
- Output audio to any channel
- Open receiving application and set input device to "BlackHole"
- Input audio from the corresponding output channels
Advanced Installation Instructions
- Build driver in Xcode
- Copy BlackHole.driver to /Library/Audio/Plug-Ins/HAL
- Restart CoreAudio with terminal command sudo killall coreaudiod
Advanced Customization
Uninstallation Instructions
- Delete BlackHole.driver from /Library/Audio/Plug-Ins/HAL
- Restart computer or restart CoreAudio with terminal command sudo killall coreaudiod
这个软件完全免费，Mac下的声卡工作流为coreaudio，不是asio，这个协议的先天优势大家都了解，那就是内录特别方便，而且不需要声卡的硬性支持，也不会像win平台下各类内录程序出现的爆音、噼啪声、缓冲区溢出、欠载、设备掉线等情况。
其实我最近打算介绍一款WASAPI的无损路由软件，但是考虑到很多宿主根本不支持WASAPI，加上微软无心推广，此事作罢。
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