LG W3000 Service Manual page 48

3. TECHNICAL BRIEF
MA-3 is a synthesizer LSI for mobile phones that realize advanced game sounds. This LSI has a
built-in speaker amplifier, and thus, is an ideal device for outputting sounds that are used by mobile
phones in addition to game sounds and ringing melodies that are replayed by a synthesizer. The
synthesizer section adopts "stereophonic hybrid synthesizer system" that are given advantages of
both FM synthesizers and Waveform table synthesizers to allow simultaneous generation of up to
thirty-two FM tones and eight Waveform table tones. Since FM synthesizer is able to present
countless tones by specifying parameters with only several tens of bytes, memory capacity and
communication band can be saved, and thus, the device exhibits the features in operating
environment of mobile phones such as allowing distribution of arbitrary melodies with tones. On the
other hand , since Waveform table synthesizer complies with downloading of tones from host CPU,
arbitrary ADCM/PCM tones can be treated from sequencer in addition to the use of tones that are
built-in the LSI.
Figure 3-33
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