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zahush76
Junior Member
Joined: 09 Mar 2011
Posts: 98
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 Posted: Sun May 29, 2011 7:37 pm Post subject: How many samples comprise the sgx-1? |
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After looking in the voice name list, i'm a bit confused.
I looked under multisamples (pg 192) - in the sgx-1 engine (EXs6 & EXs7).
I thought i' was going to find one sample of a german grand and one sample of the japanease grand.
Instead i found 81 german piano samples, and 51 japanease piano samples. They are labeled differently. As if a "regular" piano is one thing, and a piano with resonance is another, release is another set of samples, and so on.
Please explain.
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Gargamel314
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Joined: 25 Dec 2007
Posts: 1147
Location: Carneys Point, NJ
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| Posted: Mon May 30, 2011 12:57 am Post subject: |
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Looks like you got a whole bunch of elements of the sound of a piano. the first 16 look like the main piano sound (what you'd find in any ROMpler, except with 8 velocity layers). and then all the different elements that get faded in along with those first 16 when triggered by different controllers, settings to the SGX-1 engine, mechanical noises, piano tailpieces, that sound when you take your foot off the pedal, the sound when you let go of the keys, etc. i couldn't imagine what "strch" is without actually trying them out, but it looks like everything has multiple velocity layers. pretty cool!
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Korg Kronos-61, 01/Wfd, SONAR Pro |
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MartinHines
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Joined: 21 Jan 2003
Posts: 3036
Location: Topeka, KS (USA)
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| Posted: Mon May 30, 2011 2:00 am Post subject: |
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Each of those items listed is a MULTISAMPLE (a set of samples).
For the pianos, each Multisample listed may consist of 88 individual samples (if they sampled every note)
Even with sampling the "regular" piano sound, you are going to have multisamples at different velocity (hardness) levels since the sound is different. The sound of playing Middle C soft is different than playing the same note harder.
Looking at the German D piano, there a multisamples for:
-- Main piano sound (8 velocity levels)
-- Resonance (5 levels)
-- Release samples (2 levels)
-- Damper Up and down
-- Others (I don't know what "strch" denotes) |
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StephenKay
KARMA Developer
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Joined: 18 Jun 2002
Posts: 2979
Location: Scottsdale, AZ
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| Posted: Mon May 30, 2011 3:07 am Post subject: |
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| MartinHines wrote: | | -- Others (I don't know what "strch" denotes) |
Strch should denote "stretch" - a remapping of some of the same samples, such that the samples are stretch tuned:
Wikipedia: Stretched tuning is a detail of musical tuning, applied to wire-stringed musical instruments, older, non-digital electric pianos (such as the Fender Rhodes piano and Wurlitzer electric piano), and some sample-based synthesizers based on these instruments, to accommodate the natural inharmonicity of their vibrating elements. In stretched tuning, two notes an octave apart, whose fundamental frequencies theoretically have an exact 2:1 ratio, are tuned slightly farther apart.
http://en.wikipedia.org/wiki/Stretched_tuning
At least, that's what I think strch means. 
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Gargamel314
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Joined: 25 Dec 2007
Posts: 1147
Location: Carneys Point, NJ
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| Posted: Mon May 30, 2011 5:04 am Post subject: |
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so in this case, the piano strings can set to be slightly out of tune with each other? i can't think of any other practical use in simulating an acoustic grand piano
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StephenKay
KARMA Developer
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Joined: 18 Jun 2002
Posts: 2979
Location: Scottsdale, AZ
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| Posted: Mon May 30, 2011 5:22 am Post subject: |
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| Gargamel314 wrote: | | so in this case, the piano strings can set to be slightly out of tune with each other? i can't think of any other practical use in simulating an acoustic grand piano |
That's not the purpose of stretch tuning. I would imagine it is in the article...
Come to think of it, I could be wrong with my assumption of what Korg means by this. I'll have to listen tomorrow... or the next day (being tomorrow is Memorial Day)...it could be that these are multisample maps where each sample has been transposed a few semitones to produce a "brighter" or "darker" piano (by playing the samples a few notes outside of their normal ranges.) Because, normally, most pianos are already stretch-tuned (from the article):
and all solutions involve some stretching of the higher notes upward and the lower notes downward from their theoretical frequencies. In shorter pianos the wire stiffness in the bass register is proportionately high and therefore causes greater stretch; on larger concert grand pianos this effect is reduced. Online sources[2] suggest that the total amount of "stretch" over the full range of a concert grand piano may be on the order of ±35 cents.
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