Output Noise
We measured the Wanbo’s noise in idle mode and at 26 degrees Celsius inside our hemi-anechoic chamber, and the output noise reached 30 dBA. So, 35dBA that the official specs mention might be produced when you stress it out.
Frequency Analysis
The highest frequency is at 630Hz. At low frequencies, I also measured a high spike at 80 Hz.
Signal Recording
I have recorded the signal shown above, but please keep in mind that I’ve enabled Automatic Gain Control (AGC) to do so to make it easier for you to reproduce them. The provided recording is only offered for aural identification purposes.
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