[pianotech] Thanks and further comments

[dale at wardprobst.com]

>From the CyberTuner Website
# Class 3: Pitch Raising with Reyburn CyberTuner
Whether you use a laptop or Pocket PC, using RCT's automated pitch raise program, one quick pass (15 minutes) leaves most notes within a cent or two for pitch raises of 50 cents or more. RCT auto-measures each note and auto-calculates its over pull using each note's optimal overpull percentage from a custom chart. New feature: you can now create, name, and save your own customized overpull percentages charts. 

16. With Reyburn CyberTuner could I tune my own piano?
    Yes! You just need to learn how first, but learning tuning takes perseverance. To learn to tune well takes A LONG TIME! Having a RCT doesn't make you a tuner, but RCT is an excellent teaching tool. If you want to learn more about piano tuning get in touch with your local chapter of the Piano Technicians Guild. http://www.ptg.org 

>From the CyberTuner manual pp 86-87
After the piano is at pitch, we strongly recommend you to create another tuning record to use for your Fine Tuning pass. Why? Because a piano's inharmonicity is affected by tension of the string, so after a pitch raise, a string's partial ladder may have changed significantly. Furthermore, some thoughtful piano “engin-ears” suspect inharmonicity is affected by the stiffness of the soundboard, which varies with downforce, which is affected by overall string tension. So for maximum accuracy, we recommend you calculate a new tuning record after a pitch change of 10¢ or more. This effect has been noticed in climates where a piano's pitch changes a lot between seasons.

DP



<<<------------------------------
Message: 12
Date: Thu, 03 Feb 2011 02:51:40 -0600
From: Duaine Hechler <dahechler at att.net>
To: pianotech at ptg.org
Subject: Re: [pianotech] Thanks and further comments
Message-ID: <4D4A6C9C.9040801 at att.net>
Content-Type: text/plain; charset=ISO-8859-1
On 02/03/2011 02:39 AM, Duaine Hechler wrote:
> On 02/03/2011 01:59 AM, tnrwim at aol.com wrote:
> 
>> And let me be sure I understand this right. You tuned a piano that 
>> was 300 cents low, using your Cyertuner, in one pass, and you said it 
>> was in tune? Is that right?
>> 
>> 
> Yes, that is why Dean has patents on some of the pieces of his 
> software.
>
> 
>From Cybertuner webpage:
* Pitch raising (and lowering) with RCT is extraordinarily accurate and fast.
* Because it's software, RCT can be easily revised, allowing constant innovation. The latest version can be downloaded from the Internet.
* RCT creates super-accurate tunings from low bass to high treble because six notes are sampled (A1, A2, A3, A4, A5 and A6) at as many as four partials three times each for a total of 63 sampled partials. All partials are automatically measured and recorded to a one-hundredth of a cent!
* RCT creates aural-quality tunings because it directly matches sampled partials - exactly what aural tuners do every day.
* Small (and all scale-challenged) pianos never sounded better! RCT automatically senses and compensates for short scaling in spinets, small grands, etc. Note point 4
　
-- 
Duaine Hechler
Piano, Player Piano, Pump Organ
Tuning, Servicing & Rebuilding
Reed Organ Society Member
Florissant, MO 63034
(314) 838-5587
dahechler at att.net
www.hechlerpianoandorgan.com
--
Home & Business user of Linux - 11 years>>>>