Phone as a Microphone for Your Computer

Yes, through a virtual audio cable. Install VB-CABLE (Windows) or BlackHole (macOS), pick the cable in “Phone sound on this computer”, and choose “CABLE Output” as the microphone in Discord or Zoom. The page itself cannot become a system microphone — browsers have no such permission, so the cable is the bridge. Device selection works in Chrome and Edge; in Firefox and Safari make the cable the default output in your system.

WO Mic installs an app on the phone plus a client and a driver on the computer, and sends mono. Here the phone just opens a page from a QR code, the sound is stereo, and the phone writes the recording itself, so Wi-Fi glitches cannot spoil it. For Discord and Zoom you still need one driver — the virtual cable.

No. A browser has no access to Bluetooth audio profiles, so the phone reaches the computer over the internet: Wi-Fi or mobile data. On the same Wi-Fi the devices connect directly with minimal delay — the “Direct” chip above the meter shows how you are connected.

Where the bytes come from. Recording from the stream keeps what made it across the network, and a lost packet stays in the file forever. When recording on the phone, the phone writes the file and the network only affects how fast it travels. If Wi-Fi drops mid-take, the phone keeps recording and sends the missing part once the connection is back.

Open the page on the computer and scan the code with both phones — each gets a number and its own level meter. One record button starts both; after you stop, each phone delivers its own file and “Download all” packs them into one archive. WAV tracks are lined up in time, Opus tracks show their offset in seconds. More than one phone at a time comes with Premium, up to four.

The browser stops the microphone — every mobile browser does this, and a page cannot override it. The page keeps the screen awake, and the “Recording screen” button turns the display black so it barely uses battery and does not time out. What was recorded before the lock is not lost — the computer keeps everything that arrived.

Recording on the phone gives Opus 256 kbps or uncompressed 48 kHz WAV; on an iPhone Opus becomes AAC in M4A. Camera mode gives an MP4 or WebM video, whichever the phone browser supports, up to 1080p (up to 4K with Premium, where the camera allows it). Long takes are written straight to disk on the computer rather than into memory, so an hour of WAV does not overflow the tab.