例文
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- -- Aliph Jawbone cellphone headset that adjusts for ambient noise levels;
- Ambient noise level is measured with a sound level meter.
- Ambient noise levels can impede both collections of the initial and subsequent voice samples.
- The system used a second microphone somewhat near the first to sense ambient noise level.
- Wide detection bandwidth, slow sweep rates, and commonly high local ambient noise levels generally mask weaker emissions.