BBC2 年
Higher tier: using microphones and data logger
A data logger can measure and record the time taken for sound to reach two microphones. Unlike the clap-echo method, these can be quite close together. For example, two microphones are 3.4 m apart.
来自MSN5 个月
'Is my phone listening to me?': Fears spark after marketing company claims to access mic data
CMG refers to "The growing ability to access microphone data on smartphones and tablets" allowing an unnamed technology partner to "aggregate and analyze voice data during pre-purchase ...
来自MSN5 个月
Marketing firm admits using your own phone to listen in on your conversations
Last December, MindSift, a New Hampshire-based company, bragged that it used voice data to place targeted ads by listening to people’s everyday conversations through microphones on their devices ...