Can create and read in a Siemens text file format. Some of these ringers produced a single tone, but others produced a sequence of two or three tones or a musical melody. Typically, solid-state oscillators have replaced them. File format generated by Qualcomm PureVoice software. People also made their own ringers which used the chip from a musical greeting card to play a melody on the arrival of a call.
Especially well-suited for simple vocal recordings. Older monophonic Ericsson format. These often use encoding formats only available to one particular phone model or brand. This allows anyone with a compatible phone to load their own ring tones in without a data cable. These patterns may vary from region to region, and other patterns are used in different countries around the world.
Telephones with electromagnetic ringers are still in widespread use. The ringing pattern is known as ring cadence. Such recordings specify what synthetic instrument should play a note at a given time, and the actual instrument sound is dependent upon the playback device.
Most new phones that don't do Nokia's Smart Messaging are using this monophonic format. Nokia phones can receive ring tones as a text message.
The ringtone file is installed in the mobile phone either by direct cable connection, Bluetooth, text messaging, or e-mail. Truetones, which are often excerpts from songs, have become popular as ring tones. It was the first mobile phone where a user could input an original melody, rather than the preset songs.
The earliest ringtone maker was Harmonium, developed by Vesa-Matti Paananen, a Finnish computer programmer, and released in for use with Nokia smart messaging. An older ringer format for Motorola phones. The ringing current originally operated an electric bell. The original ringtones play only one note at a time.