Micstream - PC Mic for Windows

Why spend money on a USB microphone? Your phone's microphone already beats most budget USB mics. Micstream makes Windows treat it like a proper hardware microphone. Works via Wi-Fi or USB.

No working mic? Use your phone
Laptop mic sounds bad? Headset broken? Webcam has no sound? Use your phone instead. Micstream turns it into a wireless microphone for your PC. No Bluetooth pairing, no extra hardware. Or connect a USB cable and use your phone as a USB microphone.

Setup is easy:
1. Download the Windows Client from micstream.io
2. In Windows, select Micstream as your audio input device
3. Launch the app and connect to your PC via Wi-Fi or USB
4. Start streaming!

Your phone is now a standalone PC microphone - just like one you would buy in the store!


Why Micstream
• Save Money: No need to purchase expensive standalone microphones — Micstream is free!
• Ultimate Convenience: Use your smartphone as a professional-grade PC mic
• High-Quality Audio: Capture crisp, clear sound for podcasts, gaming, video-calls, voiceovers, and more
• Customized Windows Driver: Use it just like a real hardware PC mic in any application (Zoom, Discord, OBS streaming, Teams, Games, etc.)

Features
• USB and Wi-Fi compatibility
• World-class Noise suppression via DeepFilterNet²
• Customized Windows audio driver
• Studio-Quality Audio — 48kHz and 32-Bit audio for unmatched clarity and detail
• Built with Oboe C++ for maximum performance
• High-quality, low-latency Opus codec
• Stereo recording on supported devices
• Automatic PC client discovery

Your phone as a mic for every app
Use your phone as a microphone for your PC in Zoom, Discord, Teams, Google Meet, OBS, and any game or recording software. One mic app covers video calls, streaming, podcasts, voice-overs, dictation, and speech-to-text. If it accepts a microphone input, then you can stream your phone mic to your PC.

Pricing
• Micstream is free — watch a short ad to stream for one hour
• Purchasing Micstream Pro supports the developer and removes ads/limits

Supported Operating Systems
• Windows 10
• Windows 11
• Linux


Noise cancellation built in
Micstream makes your phone into a noise cancelling microphone. It uses DeepFilterNet², the state-of-the-art AI noise filter. It removes background noise like keyboard sounds, fans, and street noise in real time. Your voice stays clear. You can turn noise cancellation on or off in the desktop app.


Micstream's desktop client features a tailored Windows audio driver designed specifically for a seamless PC mic experience. The 32-Bit depth support allows for a wider dynamic range and increased detail in your recordings.


To encode and decode audio data, we utilize the Opus codec, a royalty-free, highly versatile audio codec that is unmatched for interactive speech.¹ The low algorithmic delay of Opus (5-10 milliseconds) makes it the perfect fit for streaming audio from your phone to your desktop PC.


For networking with your PC, Micstream uses the UDP protocol on ports 37718 to 37720. The UDP broadcasting feature enables automated client discovery in wireless mode. Micstream also uses FEC (forward error correction) to handle packet loss.


Privacy Policy
Our privacy policy can be found here:
https://micstream.io/privacy


¹ https://en.wikipedia.org/wiki/Opus_(audio_format)
² https://github.com/Rikorose/DeepFilterNet

Recent changes:
• Streaming keeps running when your audio device changes, e.g. when you connect or disconnect headphones
• Fixed rare crashes with USB tethering and when opening links