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  2. Head-related transfer function - Wikipedia

    en.wikipedia.org/wiki/Head-related_transfer_function

    HRTF filtering effect. A head-related transfer function (HRTF) is a response that characterizes how an ear receives a sound from a point in space. As sound strikes the listener, the size and shape of the head, ears, ear canal, density of the head, size and shape of nasal and oral cavities, all transform the sound and affect how it is perceived, boosting some frequencies and attenuating others.

  3. Pairing function - Wikipedia

    en.wikipedia.org/wiki/Pairing_function

    Pairing function. In mathematics, a pairing function is a process to uniquely encode two natural numbers into a single natural number. [1] Any pairing function can be used in set theory to prove that integers and rational numbers have the same cardinality as natural numbers. [1]

  4. Cell wall - Wikipedia

    en.wikipedia.org/wiki/Cell_wall

    The secondary cell wall, a thick layer formed inside the primary cell wall after the cell is fully grown. It is not found in all cell types. It is not found in all cell types. Some cells, such as the conducting cells in xylem , possess a secondary wall containing lignin , which strengthens and waterproofs the wall.

  5. List of Bluetooth protocols - Wikipedia

    en.wikipedia.org/wiki/List_of_Bluetooth_protocols

    The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10. RFCOMM is sometimes called serial port emulation.

  6. List of Bluetooth profiles - Wikipedia

    en.wikipedia.org/wiki/List_of_Bluetooth_profiles

    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.

  7. Bacterial cell structure - Wikipedia

    en.wikipedia.org/wiki/Bacterial_cell_structure

    The cell envelope is composed of the cell membrane and the cell wall. As in other organisms, the bacterial cell wall provides structural integrity to the cell. In prokaryotes , the primary function of the cell wall is to protect the cell from internal turgor pressure caused by the much higher concentrations of proteins, and other molecules ...

  8. Pairing (computing) - Wikipedia

    en.wikipedia.org/wiki/Pairing_(computing)

    Pairing, sometimes known as bonding, is a process used in computer networking that helps set up an initial linkage between computing devices to allow communications between them. The most common example is used in Bluetooth, where the pairing process is used to link devices like a Bluetooth headset with a mobile phone . Categories:

  9. Cell envelope - Wikipedia

    en.wikipedia.org/wiki/Cell_envelope

    The cell envelope comprises the inner cell membrane and the cell wall of a bacterium. In Gram-negative bacteria an outer membrane is also included. [1] This envelope is not present in the Mollicutes where the cell wall is absent. Bacterial cell envelopes fall into two major categories: a Gram-positive type which stains purple during Gram ...