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#1310356 - 11/22/09 12:05 PM Kawai polyphony, why 192?
Huygens Offline
Full Member

Registered: 11/10/09
Posts: 217
Loc: Sweden
Why does the Kawai have 192 tones polyphony? Can you ever get more than 88 tones to sound at the same time on an 88 keys piano?

Only reason I could see for 192 tones polyphony is to:

1. Press the sustain pedal.
2. Strike all keys, 88 (tripplets of) strings will sound.
3. Press the una corde pedal.
4. Strike all keys, 88 (single) strings will sound.

This gives a total of 88 + 88 = 176 tones at the same time. But that still leaves some polyphony to no use.

I first thought that perhaps Kawai at one time had prepared for making a "Bösendorfer" DP. On a Bösendorfer you get either 92 + 92 = 184 tones or 97 + 97 = 194 tones, when you combine both ordinary sustained keys + una corde sustained keys. But neither of 184 nor 194 fits Kawai's maximum polyphony number.


What purpose does the 12 "extra" polyphony tones in a Kawai server?

An why has Yamaha only 128 tones polyphony on the majority of their mid-range DPs?
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#1310375 - 11/22/09 12:35 PM Re: Kawai polyphony, why 192? [Re: Huygens]
david_a Offline
2000 Post Club Member

Registered: 11/11/09
Posts: 2913
My assumption: 192 is both ( a ) a logical number for building a computer processor and ( b ) more than enough polyphony notes to cover normal situations.
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#1310380 - 11/22/09 12:52 PM Re: Kawai polyphony, why 192? [Re: david_a]
MacMacMac Offline
4000 Post Club Member

Registered: 09/24/09
Posts: 4877
Loc: North Carolina
Presumably, 96 polyphony is for the left channel, and another 96 for the right. Total 192.

Now, does this piano have a "dual" mode where two voices can play simultaneously?
If so, then in this mode, we have:
48 polyphony for voice 1/left
48 polyphony for voice 1/right
48 polyphony for voice 2/left
48 polyphony for voice 2/right

Suddenly 192 isn't all that much after all.

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#1310392 - 11/22/09 01:17 PM Re: Kawai polyphony, why 192? [Re: MacMacMac]
LesCharles73 Offline
500 Post Club Member

Registered: 03/24/07
Posts: 744
Loc: Denton Texas
If there is a recording feature, you will need more polyphony for that too.
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#1310448 - 11/22/09 02:30 PM Re: Kawai polyphony, why 192? [Re: LesCharles73]
emenelton Offline
500 Post Club Member

Registered: 08/02/09
Posts: 865
Kawai excites octave and 12th partials, out a few octaves, as part of its sympathetic resonance 'routine'.

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#1310483 - 11/22/09 03:41 PM Re: Kawai polyphony, why 192? [Re: Huygens]
ChrisA Offline
3000 Post Club Member

Registered: 12/28/08
Posts: 3841
Loc: Redondo Beach, California
Originally Posted By: Huygens
Why does the Kawai have 192 tones polyphony? Can you ever get more than 88 tones to sound at the same time on an 88 keys piano?



If you use the recorder you can play with both hands and then record a track over that with (say) a string sound and then when you play over the two recorded tracks. You have in effect three instruments playing

Also if you set up layered sound in stereo each key plays four notes.

Combine layered sound with recording and you can use a lot of notes and I've not even gotten to the sustain pedal yet

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#1310497 - 11/22/09 04:16 PM Re: Kawai polyphony, why 192? [Re: ChrisA]
Huygens Offline
Full Member

Registered: 11/10/09
Posts: 217
Loc: Sweden
Ok, you got the point. smile

So, if I want 384 polyphonic notes I have to buy two Kawais? smile
_________________________
P-85 cheap plastic imitation; not because of sound, but weight.

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#1310698 - 11/22/09 10:34 PM Re: Kawai polyphony, why 192? [Re: Huygens]
Kawai James Online   content
Yikes! 10000 Post Club Member

Registered: 09/06/07
Posts: 12293
Loc: Hamamatsu, Japan
In addition, the MP5/MP8II allow separate instrument sounds to be assigned to each of the 4 'zones' and played back simultaneously.

Kind regards,
James
x
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Employed by Kawai Japan, however the opinions I express are my own.
Nord Electro 3 fan & occasional rare groove player.

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#1310712 - 11/22/09 11:13 PM Re: Kawai polyphony, why 192? [Re: Huygens]
ChrisA Offline
3000 Post Club Member

Registered: 12/28/08
Posts: 3841
Loc: Redondo Beach, California
Originally Posted By: Huygens

So, if I want 384 polyphonic notes I have to buy two Kawais? smile


Actually that would work if you have a MIDI cable.

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