What is 应声 (Voicefall)? A global voice-input tool, not an IME

应声 (Voicefall) is a global push-to-talk voice-input tool for Mac and Windows. Many people search for it as 应声输入法 or 应声语音输入法 — but strictly speaking it is not a system input method (IME) you switch to. In any app and any text field, you hold Right Option (Mac) or Right Alt (Windows), speak, release, and the text lands at your cursor — all while your existing keyboard IME stays exactly as it is.

What is 应声输入法?

People find us by searching 应声输入法 and 应声语音输入法, so it's worth being precise about what 应声 actually is. It is not a traditional input method that you add in system settings and switch into with a keyboard shortcut. There's no candidate bar, no pinyin composition, nothing to toggle on and off in your language menu.

Instead, 应声 is a global voice-input tool. It sits quietly in the background across your whole system. Whenever you want to speak instead of type — in any app, in any field — you hold Right Option and talk. Release, and your words land at the cursor about a second later. It coexists with whatever IME you already use; it doesn't replace it.

How it differs from a system input method

The difference comes down to three things:

No switching. You never toggle into 应声. Your usual keyboard and IME stay active; 应声 layers voice on top, on demand.
Works everywhere. Because it's global rather than app-bound, the same gesture works in your editor, browser, chat, terminal — anywhere a cursor blinks.
Push-to-talk. It's not always-listening. You hold a key to speak and release to insert, so you're in control of exactly what gets recorded and when.

And it's built for the way bilingual users actually talk — mixing Chinese and English inside one sentence — which system dictation typically can't handle.

Supported platforms & how to start

应声 (Voicefall) runs on Mac (v0.2.4, macOS 12+, Universal) and Windows (v0.1.3, signed), published by HENGCHENG LLC. Getting started takes a couple of minutes: download, grant the microphone and accessibility permissions, and hold the key to speak. See the install guide for step-by-step setup.

Download for Mac Download for Windows