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A prototype for five-channel surround sound, then dubbed "quintaphonic sound", was used in the 1975 film Tommy. [6]5.1 dates back to 1976, [7] when Dolby Labs modified the track usage of the six analogue magnetic soundtracks on Todd-AO 70 mm film prints.
Most Bluetooth headsets implement both Hands-Free Profile and Headset Profile, because of the extra features in HFP for use with a mobile phone, such as last number redial, call waiting and voice dialing. The mobile phone side of an HFP link is Audio Gateway or HFP Server. The automobile side of HFP link is Car Kit or HFP Client.
Multiple Sonos devices in a single household are connected to each other wirelessly, through a wired Ethernet network, or a mixture of the two. [92] The Sonos system creates a proprietary AES-encrypted peer-to-peer mesh network, [93] known as SonosNet. This allows for each unit to play any chosen input and if desired share it as synchronized ...
Ambisonics is a recording and playback technique using multichannel mixing that can be used live or in the studio and which recreates the sound field as it existed in the space, in contrast to traditional surround systems, which can only create the illusion of the sound field if the listener is located in a very narrow sweet spot between ...
Bluetooth is commonly used to transfer sound data with telephones (i.e., with a Bluetooth headset) or byte data with hand-held computers (transferring files). Bluetooth protocols simplify the discovery and setup of services between devices. [55] Bluetooth devices can advertise all of the services they provide. [56]
The "QuietComfort 35" (QC35) over-ear wireless headphones were sold from 2016 until 2018, [48] as a Bluetooth headset based on the QuietComfort 25 model. The QC35s could be used without Bluetooth as wired headphones, and the right earcup included volume controls and a play/pause button. The available colours were matte black and silver.