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Designing a Real-Time Audio Transcription Engine with Whisper and Web Audio API: Optimizing Audio Downsampling in Worklets

Master client-side audio DSP. Build an AudioWorkletProcessor to downsample browser mic streams to 16kHz PCM on the fly for Whisper transcription models.

Sachin Sharma
Sachin SharmaCreator
Jun 4, 2026
6 min read
Designing a Real-Time Audio Transcription Engine with Whisper and Web Audio API: Optimizing Audio Downsampling in Worklets
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Master client-side audio DSP. Build an AudioWorkletProcessor to downsample browser mic streams to 16kHz PCM on the fly for Whisper transcription models.

Web Audio APIAudioWorkletWhisper AIWebSocketsAudio ProcessingDSPPerformance
Sachin Sharma

Sachin Sharma

Software Developer

Building digital experiences at the intersection of design and code. Sharing weekly insights on engineering, productivity, and the future of tech.

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