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Court reporter tests his stenomask. [1]A stenomask is a hand-held microphone built into a padded, soundproof enclosure that fits over the speaker's mouth or nose and mouth. . Some lightweight versions may be fitted with an elastic neck strap to hold them in place while freeing the user's hands for other tas
Starting 2015, some wireless speakers integrate VOIP telephony functions. [5] Other models have an integrated FM radio. The higher end models add an LCD screen to make it easier to select and store radio stations. Most wireless speakers have a built-in microphone, which allows to receive and make calls using a mobile phone in hands
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[17] [18] This was improved in 1930 by Alan Blumlein and Herbert Holman who released the HB1A and was the best standard of the day. [14] Also in 1923, the ribbon microphone was introduced, another electromagnetic type, believed to have been developed by Harry F. Olson, who applied the concept used in a ribbon speaker to making a microphone. [19]
This includes microphones, radio receivers, AV receivers, CD players, tape recorders, amplifiers, mixing consoles, effects units, headphones, and speakers. [1] Audio equipment is widely used in many different scenarios, such as concerts, bars, meeting rooms and the home where there is a need to reproduce, record and enhance sound volume.
The built-in microphone in smart speakers is continuously listening for "hot words" followed by a command. However, these continuously listening microphones also raise privacy concerns among users. [7] These include what is being recorded, how the data will be used, how it will be protected, and whether it will be used for invasive advertising.
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