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  2. FaceTime - Wikipedia

    en.wikipedia.org/wiki/FaceTime

    Based on the same AAC-LD audio protocol, the service provides high-quality audio. The iOS 7 betas limited FaceTime Audio to calls placed on a Wi-Fi network (the same original limitation of the video version of FaceTime), but the final release has removed that restriction to allow it to work over 3G and LTE data connections, as is the case with ...

  3. AAC-LD - Wikipedia

    en.wikipedia.org/wiki/AAC-LD

    AAC-LD uses a version of the modified discrete cosine transform (MDCT) audio coding technique called the LD-MDCT. [8] AAC-LD is widely used by Apple as the voice-over-IP (VoIP) speech codec in FaceTime .

  4. Comparison of user features of messaging platforms - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_user...

    FaceTime supports any iOS device with a forward-facing camera and any Mac computer equipped with a FaceTime Camera. FaceTime Audio, an audio-only version, is available on any iOS device that supports iOS 7 or newer, and any Mac with a forward-facing camera running Mac OS X 10.9.2 and later.

  5. Renee Zellweger on leaving Hollywood: 'I got sick of the ...

    www.aol.com/entertainment/2016-06-06-renee...

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  6. iOS 12 - Wikipedia

    en.wikipedia.org/wiki/IOS_12

    A FaceTime issue impacting several versions of iOS 12 (versions 12.1–12.1.3) allowed users to call someone via FaceTime and hear the audio coming from their phone before answering the call, [44] before the bug was fixed in iOS 12.1.4. [45]

  7. Ranking the five best and worst stadiums in the NFL based on ...

    www.aol.com/ranking-five-best-worst-stadiums...

    The only thing I'd say that is negative is the sound of the squawking seahawk felt like I was getting tazed done to my soul. ... Parking and leaving is such a disaster! I dread having to come me ...

  8. Off-hook tone - Wikipedia

    en.wikipedia.org/wiki/Off-hook_tone

    Some central office switches in the United States, notably older GTD-5 EAX systems, utilize a single frequency tone, 480 Hz, known as High Tone for this purpose. In either case, the tone is substantially louder than any other signal transmitted over a copper POTS circuit; loud enough to be heard across a room from an unused off-hook telephone.

  9. Videotelephony - Wikipedia

    en.wikipedia.org/wiki/Videotelephony

    Audio output: usually loudspeakers associated with the display device or telephone Data transfer : analog or digital telephone network, LAN , or Internet Computer : a data processing unit that ties together the other components, does the compressing and decompressing, and initiates and maintains the data linkage via the network.