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Build an Industrial Decibel Sound Level Logger with ESP32-S3 & I2S SPH0645
Comprehensive step-by-step engineering guide for building an industrial sound level meter (dBA) and noise pollution logger using ESP32-S3 and SPH0645 I2S microphone.
ESP32-S3 DevKitC-1 (Xtensa LX7 Dual-Core with SIMD DSP Audio Vector Extensions)Acoustic Transducer: Knowles SPH0645LM4H High-Precision Digital I2S MEMS MicrophoneDigital Signal Processing: Real-Time IIR A-Weighting Filter (IEC 61672 Compliance), IIR High-Pass DC Offset Removal, Equivalent Continuous Sound Level ($L_{eq}$) CalculationTelemetry & Logging: Industrial ThingSpeak Cloud Dashboard, Local MicroSD Circular Buffer, OSHA / CPCB Noise Threshold AlertsTarget Search Intent: "I2S DMA buffer overflow in FreeRTOS task ESP32-S3", "SPH0645 DC offset filter clipping fix", "ESP32 A-weighting decibel sound meter code", "OSHA noise pollution decibel logger"1 Code • 0 CAD
Download verified Arduino C++ firmware, pinout table, and BOM for Build an Industrial Decibel Sound Level Logger with ESP32-S3 & I2S SPH0645.
20 mins
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