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  2. List of Bluetooth protocols - Wikipedia

    en.wikipedia.org/wiki/List_of_Bluetooth_protocols

    Used to set up and control speech and data calls between Bluetooth devices. The protocol is based on the ITU-T standard Q.931, with the provisions of Annex D applied, making only the minimum changes necessary for Bluetooth. TCS is used by the intercom (ICP) and cordless telephony (CTP) profiles. The telephone control protocol specification is ...

  3. Pulse shaping - Wikipedia

    en.wikipedia.org/wiki/Pulse_shaping

    In electronics and telecommunications, pulse shaping is the process of changing a transmitted pulses' waveform to optimize the signal for its intended purpose or the communication channel. This is often done by limiting the bandwidth of the transmission and filtering the pulses to control intersymbol interference .

  4. Plantronics - Wikipedia

    en.wikipedia.org/wiki/Plantronics

    Plantronics entered the multimedia headset market in 1999 with the release of the HS1 and the DSP-500 headsets, the latter featuring a built-in digital signal processing card. In 2002, Plantronics and Microsoft created the headset for the Xbox Communicator, the first headset to enable voice communication with Xbox Live. [13]

  5. Bluetooth - Wikipedia

    en.wikipedia.org/wiki/Bluetooth

    For example, when you use a mobile phone with a Bluetooth headset, the phone uses SDP to determine which Bluetooth profiles the headset can use (Headset Profile, Hands Free Profile (HFP), Advanced Audio Distribution Profile (A2DP) etc.) and the protocol multiplexer settings needed for the phone to connect to the headset using each of them.

  6. Pulse compression - Wikipedia

    en.wikipedia.org/wiki/Pulse_compression

    Result 3 After pulse compression, the signal-to-noise ratio can be considered as being amplified by as compared to the baseline situation of a continuous-wave pulse of duration ′ = / and the same amplitude as the chirp-modulated signal before compression, where the received signal and noise have (implicitly) undergone a bandpass filtering on

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  8. Poly Inc. - Wikipedia

    en.wikipedia.org/wiki/Poly_Inc.

    Poly Inc., formerly Polycom, is an American multinational corporation that develops video, voice and content collaboration and communication technology. Poly is a subsidiary of HP Inc. [ 2 ] [ 3 ] Polycom was co-founded in 1990 by Brian L Hinman and Jeffrey Rodman. [ 4 ]

  9. Power-line communication - Wikipedia

    en.wikipedia.org/wiki/Power-line_communication

    Timing is roughly centered on the zero crossing with a timer from the previous zero crossing. Typical speeds are 200 to 1200 bits per second, with one bit per tone slot. Speeds also depend on the AC line frequency. The speed is limited by noise, and the jitter of the AC line's zero crossing, which is affected by local loads.