Ringtones

The content associated with music services are various types of ringtones and caller back tones.

Ringtones

Ringtones refer to the custom sounds that are available now on most mobile phones. Ringtones allow you to distinguish you call sound from that of other people, and often it is a style statement or reflection of your personality. There are three types of ringtones:

• Mono Tones: Most of the phones that were available in the market yesteryears could only play monophonic tones. These were of shorter duration and had extremely simple tones.
• Poly Tones: According to Wikipedia, "Polyphonic means that multiple notes can be played at the same time using instrument sounds such as guitar, drums, electronic piano, etc. Many phones are now able to play more complex polyphonic tones; up to 128 individual notes with different instruments are played simultaneously to give a more realistic musical sound." The handset capability determines the quality of the polyphonic sound, and some of the latest handsets support 128 notes.
• True Tones: In true tones, you use the "pulse-code modulation encoding of the real sound." The real sound can be a normal audio file in a .wav, .mp3, .wma or any other similar format. You will need a software application in your mobile handset to listen to that specific True tone format.

Caller Back Tones

Caller back tones or ring back tones refer to the tone heard by someone before you answer the call. Caller back tones are not content downloads and have to set at the operator end. Personalized ring back are extremely popular these days, and combine different types of audio messages and tones.