Yamaha NSX-1 resources

Here are some of the Yamaha NSX-1 resources that I’ve found on-line. It took a lot of browsing to find English language resources! I apologizing for writing a rather terse blog post — just the facts, documents and links!

Please check out my own posts on this site:

I hope these resources help your exploration of the NSX-1, eVocaloid and Pocket Miku!

Sound source specifications

Sound source methods  EVocaloid, Real Acoustic Sound, Wavetable 
                      method (General MIDI)
Maximum polyphony     64
Multi-timbral         Sound source 16 parts, A / D input part × 2
Waveform memory       Equivalent to 4 Mbytes
Number of voices      EVocaloid (eVY 1 (Japanese)) / Real Acoustic 
                      Sound × 30 types, General MIDI × 128 kinds
Number of drum kit    1 Drum Kit (General MIDI)
Effects               Reverb × 29, Chorus × 24, Insertion × 181,
                      Master EQ (5 Bands)

Hardware specifications

Host Interface        SPI / 8 bit parallel / 16 bit parallel
Audio interface       Input × 2, output × 2
Power supply          1.65 V - 3.6 V [Core] 1.02 V - 1.20 V
Power consumption     [Standby] 10 µA [Operating] 12 mA to 22 mA
Package               80-pin LQFP (0.5 mm pitch, 12 mm × 12 mm),
                      76-ball FBGA (0.5 mm pitch, 4.9 mm × 4.9 mm)

Software specifications

Serial Comm Interface      Bit length     8
                           Start bit      1
                           Stop bit       1
                           Parity bit     none
                           Transfer rate  31250 bps or 38400 bps
Program change             CH.1    eVocaloid only (eVY1)
                                   Not receive program change messages
                                   Monophonic pronunciation
                           CH.2 - CH.16   General MIDI voices
System exclusive message   GM ON, XG parameter, Lyrics data etc.
                           Not received other than Yamaha ID
                           Some Yamaha ID still does not received
                           (such as music instrument specific)
Other MIDI messages        Channel message
                           NRPN, RPN
Lyrics data                Transfer by System Exclusive or NRPN messages
Continuous operating time  8 hours (eVocaloid specification)
                           If exceeded, requires power off, reset,
                           and NSX-1 reboot, etc.