Live speech-to-text on an ESP32-P4 microcontroller, no cloud
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HN · launched Oct 27, 2026 · 16 upvotes (top 34%) · 0 views
Niche: speech and text conversion software · 100 launches, 5 in the last 7 days ▼ -67% · Explore this niche →
Category and tags
- Horizontal
- Hardware & robotics
- Developer
- AI feature
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 100 launches in speech and text conversion software →
Could you build this?
No Real-time speech-to-text on a microcontroller needs embedded firmware, a quantized speech model fitted to the chip's memory and compute limits, and hardware-specific audio pipelines.
What it would actually take: This requires an ESP32-P4 toolchain (ESP-IDF), a small streaming ASR model (such as a quantized Whisper variant or a Conformer/Zipformer-class model) compressed to fit the device's PSRAM and SRAM, and optimized kernels for the chip's vector or AI acceleration. The work needs embedded ML and DSP engineers and hardware on hand for profiling and iteration.
Discussion
6 comments analyzed.
Competitors mentioned: Whisper, Kaldi
Concerns raised: unknown power draw while transcribing
Feature requests: lower final-word latency
Competitors
Other products that read as similar to this one : 1464 launches clear the similarity bar, closest 8 shown.
Attention rank: #517 of 1465 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 362 days after the earliest competitor.
- ito · github · 2026-10-02 · 11 upvotes · similarity 0.74
- LinnetTTS · github · 2026-11-03 · 24 upvotes · similarity 0.64
- esp32-pie-asr · github · 2026-10-25 · 16 upvotes · similarity 0.63
- Voxxy · hn · 2026-05-24 · 9 upvotes · similarity 0.62
- Eloqium-TTS · github · 2026-09-11 · 6 upvotes · similarity 0.61
- Speechmark · hn · 2026-06-19 · 6 upvotes · similarity 0.58
- Heard for iOS: ePub reader with on-device text to speech · hn · 2026-07-15 · 5 upvotes · similarity 0.58
- YazSes · hn · 2026-09-12 · 6 upvotes · similarity 0.58
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