File size: 27 MB
Loopback 可以在 macOS 上轻松完成应用程序之间的音频信号传递。创建虚拟音频设备，抓取来自各类软件应用、音频输入硬件的声音，再转发给音频处理软件使用。它相当于把一套高端录音棚调音台的能力直接搬进你的电脑内部。
典型使用场景
- 播客：给全部参会嘉宾播放背景音乐 将你的麦克风，搭配 iTunes、QuickTime Player 等音频源进行混音合并；在 Skype 里选择 Loopback 虚拟设备作为输入源，通话对象就可以同时听到你的人声与附加背景音乐。
- 录制游戏视频 想要录制游戏视频并且同时收录游戏音效 + 麦克风人声往往很麻烦。搭配 Elgato 采集卡这类硬件设备时，Loopback 可以把两路音频合并在一起录制。
- 合并多路硬件输入设备 GarageBand、Logic、Ableton Live 这类 DAW，同一时刻只支持选定一个录音设备，但支持多通道录入。使用 Loopback，就可以把多个硬件输入设备合并为一个虚拟音频设备，方便统一录制。
- 制作高质量屏幕录制视频 QuickTime Player 等录屏软件要么只能录麦克风，要么只能录系统内部音频，二者很难同时获取。你可以用 Loopback 创建虚拟设备，同时拾取麦克风与软件音频，得到完全符合需求的混合录音。
- 直播广播音频路由 在 Audio Hijack 处理链路的末端设置直通型虚拟输出设备，再把该设备作为 Nicecast 的输入源。录制播客的同时，听众就可以收听到实时直播流。
系统要求
macOS 11.0 及更高版本
Loopback makes it easy to pass audio between applications on your Mac. Create virtual audio devices to take the sound from applications and audio input devices, then send it to audio processing applications. Loopback gives you the power of a high-end studio mixing board, right inside your computer!
– Play Audio to All Your Podcast Guests – Combine your mic with audio sources like iTunes or QuickTime Player, then select your Loopback device as your source in Skype. Presto! Your guests all hear both your voice and your audio add-ons.
– Record Gameplay Videos – Making gameplay videos with great audio can often be very difficult. If you’re using a device like Elgato’s Game Capture hardware and you want to record both your microphone and the game’s audio at once, Loopback can assist!
– Combine Hardware Devices – Apps like GarageBand, Logic, and Ableton Live only record from a single audio device at once. Thankfully, they offer recording from many channels. With Loopback, you can combine multiple input devices into one virtual device for easy recording.
– Create Top-Notch Screencasts – Screen recorders, including QuickTime Player, allow you to include your mic’s audio. Some allow recording of system audio instead, but neither option is ideal. Create a virtual device that grabs just the mic and the app’s audio to get exactly the audio you want.
– Route Audio For Broadcasts – Set a simple (pass-thru) device as the output at the end of an Audio Hijack chain, and then as the input source in Nicecast. Now listeners can tune in to a live stream of your podcast as you record it!
Supported Operation Systems
macOS 11.0 or later
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