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The Motorola ROKR (/ ˈ r ɒ k ər /), the first version of which was informally known as the iTunes phone, was a series of mobile phones from Motorola, part of a 4LTR line developed before the spin out of Motorola Mobility. ROKR models were released starting in September 2005 and ending in 2011, because of the dissolution of Motorola Inc..
A ringtone maker is an application that converts a user chosen song or other audio file for use as a ringtone of a mobile phone. The ringtone file is installed in the mobile phone either by direct cable connection, Bluetooth, text messaging, or e-mail. On many websites, users may create ringtones from digital music or audio.
The high frequencies may be the same volume as – or louder than – the low frequencies when sent across the line. The loudness difference between the high and low frequencies can be as large as 3 decibels (dB) and is referred to as "twist." The duration of the tone should be at least 537 ms. [1]
In April 2008, the iTunes Store was the largest music vendor in the United States, [15] and in February 2010, it was the largest music vendor in the world. [16] The iTunes Store's revenues in the first quarter of 2011 totaled nearly US$1.4 billion. [17] By May 28, 2014, the store had sold 35 billion songs worldwide. [18]
Historically, this entailed sending a high-voltage alternating current over the telephone line to a customer station which contained an electromagnetic bell. It is therefore also commonly referred to as power ringing , to distinguish it from another signal, audible ringing, or ringing tone , which is sent to the originating caller to indicate ...
The iTunes Store was first made available on iOS devices with the release of iPhone OS 2, allowing the purchase of music and podcasts. iPhone OS 3 further added the ability to rent and purchase movies and TV shows from the iTunes Store. As of April 2020, iTunes offers 60 million songs, 2.2 million apps, 25,000 TV shows, and 65,000 films.
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The sound was made into a mobile phone ringtone, which could not be heard by teachers if the phone rang during a class. [13] Mobile phone speakers are capable of producing frequencies above 20 kHz. [14] This ringtone became informally known as "Teen Buzz" [15] or "the Mosquito ringtone" and has since been sold commercially.