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  2. Crystal earpiece - Wikipedia

    en.wikipedia.org/wiki/Crystal_earpiece

    The resulting sound is very tinny and lacking in bass. Modern headphones use electromagnetic drivers that work similarly to speakers, with moving coils or moving iron cores in a magnetic field. One remaining use for crystal earpieces is in crystal radios .

  3. Audio headset - Wikipedia

    en.wikipedia.org/wiki/Audio_headset

    General 3.5 mm computer headsets come with two 3.5 mm connectors: one connecting to the microphone jack and one connecting to the headphone/speaker jack of the computer. 3.5 mm computer headsets connect to the computer via a sound card, which converts the digital signal of the computer to an analog signal for the headset. USB computer headsets ...

  4. Missing fundamental - Wikipedia

    en.wikipedia.org/wiki/Missing_fundamental

    The pitch being perceived with the first harmonic being absent in the waveform is called the missing fundamental phenomenon. [ 1 ] It is established in psychoacoustics that the auditory system, with its natural tendency to distinguish a tone from another, will persistently assign a pitch to a complex tone given that a sufficient set of ...

  5. List of Bluetooth profiles - Wikipedia

    en.wikipedia.org/wiki/List_of_Bluetooth_profiles

    It is called push because the transfers are always instigated by the sender (client), not the receiver (server). OPP uses the APIs of OBEX profile and the OBEX operations which are used in OPP are connect, disconnect, put, get and abort. By using these API the OPP layer will reside over OBEX and hence follow the specifications of the Bluetooth ...

  6. Headphones - Wikipedia

    en.wikipedia.org/wiki/Headphones

    Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby ...

  7. US lawmakers seek to halt weapons sales to UAE, citing Sudan

    www.aol.com/news/us-lawmakers-seek-halt-weapons...

    "The UAE is one of the biggest outside actors fueling the violence in Sudan, and yet the U.S. is on the brink of selling the UAE another $1.2 billion in weapons that could end up in the hands of ...

  8. Anthony Richardson's future, Cowboys & Jets fixable ... - AOL

    www.aol.com/sports/anthony-richardsons-future...

    Jason Fitz is joined by Jori Epstein and Frank Schwab to deep dive on the latest news and storylines from around the NFL, including the Anthony Richardson benching and trade deadline moves that ...

  9. Hearables - Wikipedia

    en.wikipedia.org/wiki/Hearables

    One was the removal of the 3.5mm audio jack from the iPhone, which was denigrated by many. However, it fundamentally changed the dynamics of the market for wireless headphones. Two additional announcements were a new wireless chip allowing them to enter the world of hearables by launching their own brand of earbuds, known as Airpods.