Native C++ Oboe & AAudio Pipeline: Sub-30ms full-duplex audio passthrough on supported Tier A wired and USB-C devices
02 / LOW-LATENCY AUDIO PASSTHROUGH · v0.1.0
Mic to Headphone.Real-time acoustic monitoring.
Mic to Headphone (package com.mictoheadphone) is an ultra-low-latency Android audio utility developed by Krishna Moni Borah under Cibru. Designed for live self-monitoring, hearing assistance, and acoustic exploration, it routes the device's built-in microphone directly to connected headphones or USB DACs using native C++ Oboe/AAudio pipelines. Built with acoustic feedback prevention that automatically silences the feed if headphones disconnect, it guarantees zero persistent recording, zero ads, and real-time audio stability.
CIBRU — INDEPENDENT DIGITAL STUDIODEVELOPED BY KRISHNA MONI BORAH
THE PURPOSEUseful by nature.
Useful by nature.
Engineered with intention.
Hear your phone's built-in microphone through connected headphones in real time with the lowest stable latency your hardware supports. Engineered with native AAudio and Oboe for musicians, performers, and acoustic monitoring.
Every release under the Cibru imprint is developed with uncompromising care for battery consumption, memory footprint, and user autonomy. Keystrokes, personal media, and sensitive tokens remain strictly within on-device sandboxes without external telemetry or background tracking.
PRIVACY AT THE COREZero surveillance.
Zero surveillance.
Respect for the user.
—Zero audio recording: Microphone stream is processed purely in volatile RAM buffers and never written to storage.
—Zero network transmission: Audio frames never leave your device and no internet permission is used for audio.
—Instant mute safety: Hardware disconnection immediately terminates the stream to protect your hearing.
—Technical and support inquiries handled directly via support@cibru.in.
Engineered for speed.
Refined in the details.
Dedicated Built-In Mic Binding: Always binds to the phone's internal microphone, even when headsets have inline microphones
Fail-Safe Feedback Protection: Prohibits speaker output and automatically silences immediately upon headphone disconnection
One-Touch Minimalist Interface: Single Start/Stop listening toggle with smooth volume gain adjustment and peak limiting
Lock-Free Live Level Metering: High-performance 25 Hz RMS audio metering without jitter or audio thread interruption
Zero Audio Recording: 100% live monitoring — acoustic frames are never buffered to storage, logged, or uploaded
Simple by design.
Effortless from day one.
Connect Headphones
Plug in 3.5mm wired headphones, a USB-C audio interface, or pair Bluetooth headphones.
Start Live Listening
Tap 'Start Listening' to begin instantaneous low-latency pass-through from phone mic to headphones.
Adjust Gain & Volume
Use the smoothed gain slider to adjust your monitoring level while built-in limiters prevent clipping.
Monitor in Background
Keep monitoring while switching apps or with the screen off via the low-power persistent notification.
Considered at every
single touchpoint.
Need assistance?
Talk to the creator.
Direct developer assistance is provided by Krishna Moni Borah. Have a question, feature suggestion, or compatibility inquiry?