HF RL Explorer

Microphone ADC Quantization Noise Degrades Audio Quality

Microphone ADC Quantization Noise Degrades Audio Quality: a task in LegoFlow-SWE (Harbor dataset). OpenRTX currently samples the microphone ADC at exactly 8 kHz – the same rate used by codec2. Because the ADC is 12‑bit, its quantization noise ends up in the same frequency band as the speech signal…

The task

OpenRTX currently samples the microphone ADC at exactly 8 kHz – the same rate used by codec2. Because the ADC is 12‑bit, its quantization noise ends up in the same frequency band as the speech signal and is encoded directly into the transmitted audio, producing noticeably degraded voice quality.

Part of Lego-X/LegoFlow-SWE.