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2. List of UWB-enabled mobile devices - Wikipedia

   en.wikipedia.org/wiki/List_of_UWB-enabled_mobile...

   Ultra-wideband (UWB, ultra wideband, ultra-wide band and ultraband) is a radio technology that can use a very low energy level for short-range, high-bandwidth communications over a large portion of the radio spectrum. The following is a list of devices that support the technology from various UWB silicon providers.

3. Wideband audio - Wikipedia

   en.wikipedia.org/wiki/Wideband_audio

   Wideband audio, also known as wideband voice or HD voice, is high definition voice quality for telephony audio, contrasted with standard digital telephony "toll quality". It extends the frequency range of audio signals transmitted over telephone lines, resulting in higher quality speech. The range of the human voice extends from 100 Hz to 17 ...

4. Ultra-wideband - Wikipedia

   en.wikipedia.org/wiki/Ultra-wideband

   Ultra-wideband is a technology for transmitting information across a wide bandwidth (>500 MHz ). This allows for the transmission of a large amount of signal energy without interfering with conventional narrowband and carrier wave transmission in the same frequency band. Regulatory limits in many countries allow for this efficient use of radio ...

5. iPhone 12 - Wikipedia

   en.wikipedia.org/wiki/IPhone_12

   The iPhone 12 features a 6.1-inch (155 mm) display [33] with Super Retina XDR OLED technology at a resolution of 2532 × 1170 pixels and a pixel density of about 460 ppi. [34] The iPhone 12 Mini features a 5.4-inch (137 mm) display with the same technology at a resolution of 2340 × 1080 pixels, and a pixel density of about 476 ppi.

6. Speex - Wikipedia

   en.wikipedia.org/wiki/Speex

   The design goals have been to make a codec that would be optimized for high quality speech and low bit rate. To achieve this the codec uses multiple bit rates, and supports ultra-wideband (32 kHz sampling rate), wideband (16 kHz sampling rate) and narrowband (telephone quality, 8 kHz sampling rate). Since Speex was designed for VoIP instead of ...

7. AirTag - Wikipedia

   en.wikipedia.org/wiki/AirTag

   AirTag is a tracking device developed by Apple. [1] AirTag is designed to act as a key finder, which helps people find personal objects (e.g., keys, bags, apparel, small electronic devices, vehicles). To locate lost items, AirTags use Apple's crowdsourced Find My network, estimated in early 2021 to consist of approximately one billion devices ...

8. Orthogonal frequency-division multiplexing - Wikipedia

   en.wikipedia.org/wiki/Orthogonal_frequency...

   Conceptually, OFDM is a specialized frequency-division multiplexing (FDM) method, with the additional constraint that all subcarrier signals within a communication channel are orthogonal to one another. In OFDM, the subcarrier frequencies are chosen so that the subcarriers are orthogonal to each other, meaning that crosstalk between the sub ...

9. iPhone hardware - Wikipedia

   en.wikipedia.org/wiki/IPhone_hardware

   The top and side of an iPhone 5S, externally identical to the SE (2016).From left to right, sides: wake/sleep button, silence switch, volume up, and volume down. The touchscreen on the iPhone has increased in size several times over the years, from 3.5 inches on the original iPhone to iPhone 4S, to the current 6.1 and 6.7 inches on the iPhone 14 and 14 Pro series.