Audio Recorder Record audio from your microphone directly in the browser.

The recorder uses navigator.mediaDevices.getUserMedia() to access the microphone with audio constraints. The audio stream is connected to a MediaRecorder instance configured with a supported MIME type (audio/webm;codecs=opus is preferred for quality and compression). During recording, the dataavailable event collects Blob chunks that are assembled into the final recording. Simultaneously, an AnalyserNode connected to the audio stream provides real-time amplitude data for the waveform visualization, rendered on a canvas using requestAnimationFrame(). The recording timer tracks elapsed time. On stop, the chunks are assembled into a complete Blob and offered for download. For WAV output, the audio stream is also captured via a ScriptProcessorNode or AudioWorklet to collect raw PCM samples.