SM1350 View Datasheet(PDF) - Nippon Precision Circuits
Part Name
Description
MFG CO.
'SM1350' PDF : 21 Pages View PDF
SM1350 series
Sound Generator
Synthesis mthod
The sound generators use the dual wave synthesis (DWS) method. The DWS method uses the envelope of 2
waveforms (main waveform and sub waveform) to synthesize the generated tone. Using this method makes
possible high tone quality output that faithfully reproduces the tones of real musical instruments.
Main Wave
Envelope
Synthesize
Generated Sound
Sub Wave
Envelope
Figure 16.
Number of simultaneous sounds
The maximum number of tones that can be generated simultaneously is 4, making 4-part harmony
harmony
Generation possible (where each tone is derived from corresponding main and sub waveforms).
Sound range
The range of sounds covers 5 octaves from note G2 to F#7.
Waveform ROM
Waveforms are stored in a 10-bit × 128-word × 8-waveform capacity waveform ROM.
Number of programmable tones
The maximum number of programmable tones is 16. Note that 2 similar tones which have different envelope
settings are considered to be separate tones.
Built-in ROMs
The built-in ROMs comprise 3 types of ROM—waveform ROM containing waveform data, score ROM
containing musical score data, and parameter ROM containing envelope and jump data.
NIPPON PRECISION CIRCUITS—15
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