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Wireless control of and communication with iOS and Android device phones, tablets and portable wireless speakers. [41] Wireless Bluetooth headset and intercom. Idiomatically, a headset is sometimes called "a Bluetooth". Wireless streaming of audio to headphones with or without communication capabilities. Wireless streaming of data collected by ...
For example, English has about 450 million native speakers but, depending on the criterion chosen, can be said to have as many as two billion speakers. [2] There are also difficulties in obtaining reliable counts of speakers, which vary over time because of population change and language shift.
The total amplification of the receiver is divided between three amplifiers at different frequencies; the RF, IF, and audio amplifier. This reduces problems with feedback and parasitic oscillations that are encountered in receivers where most of the amplifier stages operate at the same frequency, as in the TRF receiver. [14]
Low-power inductively coupled spark-gap transmitter on display in Electric Museum, Frastanz, Austria. The spark gap is inside the box with the transparent cover at top center. A spark-gap transmitter is an obsolete type of radio transmitter which generates radio waves by means of an electric spark.
A personal FM transmitter is a low-power FM radio transmitter that broadcasts a signal from a portable audio device (such as an MP3 player) to a standard FM radio. Most of these transmitters plug into the device's headphone jack and then broadcast the signal over an FM broadcast band frequency, so that it can be picked up by any nearby radio.
With an appropriate wire antenna, the Tesla coil circuit could function as such a narrow-bandwidth radio transmitter. [89] [14] [65] [90] In his March 1893 St. Louis lecture, [31] Tesla demonstrated a wireless system that was the first use of tuned circuits in radio, although he used it for wireless power transmission, not radio communication.
Bone conduction is one reason why a person's voice sounds different to them when it is recorded and played back. Because the skull conducts lower frequencies better than air, people perceive their own voices to be lower and fuller than others do, and a recording of one's own voice frequently sounds higher than one expects (see voice confrontation).
The following list contains the most-streamed artists on the audio streaming platform Spotify. As of August 2024, Canadian rapper Drake is the most-streamed artist of all time, with over 100 billion streams. [2] American singer Taylor Swift is the most-streamed female artist, having received more than 85 billion streams. [2]