EP0522997A2 - Verfahren zur Berechnung von Saiten und den zugehörigen Hammergewichten in Klavieren und Flügeln unter Berücksichtigung der Chöre - Google Patents
Verfahren zur Berechnung von Saiten und den zugehörigen Hammergewichten in Klavieren und Flügeln unter Berücksichtigung der Chöre Download PDFInfo
- Publication number
- EP0522997A2 EP0522997A2 EP92810274A EP92810274A EP0522997A2 EP 0522997 A2 EP0522997 A2 EP 0522997A2 EP 92810274 A EP92810274 A EP 92810274A EP 92810274 A EP92810274 A EP 92810274A EP 0522997 A2 EP0522997 A2 EP 0522997A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- strings
- hammer
- string
- pianos
- account
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004364 calculation method Methods 0.000 title abstract description 3
- 238000000034 method Methods 0.000 claims abstract description 6
- 241000251131 Sphyrna Species 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract description 4
- 230000001419 dependent effect Effects 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 238000009954 braiding Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241001342895 Chorus Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
- G10D3/10—Strings
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
- G10C3/16—Actions
- G10C3/18—Hammers
Definitions
- the invention relates to the arithmetic relation between the string and the corresponding striking hammer, taking into account the "choirs" with 1, 2 or 3 strings per key and ensures a uniform playability of the entire instrument and the same attack gives the same volume and sound strength.
- the calculation of strings and hammers is based on the analysis of commercially available instruments, whose irregularities, especially in the transitions between the choirs, were recognized with the applied mathematical analysis methods and opened the way to the relationships described in the invention between string and hammer.
- the hammer weights are usually better balanced than the tensile forces of the strings.
- the invention relates only to the entire excitation system for generating the tones, but does not go into the dependent resonance system.
- D1 7.7 g / cm3
- D2 9.33 g / cm3
- the weight of the wound string is The number of tours becomes smaller against the deep basses. Piano makers who continue to consider changing tensile forces within the choirs to be reasonable and / or correct are forced to calculate each string individually, although the scale shortening is geometrical.
- the claim 3 relates to the relationship of the string described above to the associated hammer weight.
- the exponent p of the string length change, the tensile force Z of the individual string as well as the total tensile force per key, and the length L n are included in the formula (example table page 6)
- the additional weight of the hammer handle has a minimal effect on this result, since the center of gravity of the moving mass moves very little from the center of gravity of the hammer head.
- the hammer weight consists of the felt, apart from the almost always the same core, which then has a larger face with increasing weight, which has been accepted up to now.
- the hammer is always the same, whose weight is balanced by an additional weight at the end of the rear part of the hammer core
- the fixation and the material of the balance weight can be selected as desired.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Stringed Musical Instruments (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1172/91 | 1991-04-18 | ||
| CH117291 | 1991-04-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0522997A2 true EP0522997A2 (de) | 1993-01-13 |
| EP0522997A3 EP0522997A3 (enrdf_load_stackoverflow) | 1994-01-12 |
Family
ID=4204183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92810274A Withdrawn EP0522997A2 (de) | 1991-04-18 | 1992-04-14 | Verfahren zur Berechnung von Saiten und den zugehörigen Hammergewichten in Klavieren und Flügeln unter Berücksichtigung der Chöre |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0522997A2 (enrdf_load_stackoverflow) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0221027A3 (de) * | 1985-10-30 | 1988-09-21 | Friedrich Paul Haferkorn | Verfahren zur Bestimmung der genauen Grössen von Musikinstrumenten und Klangkörpern in Relation zu Frequenz und Klangfarbe, einschliesslich der Unterteilungen für Halbtöne |
-
1992
- 1992-04-14 EP EP92810274A patent/EP0522997A2/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0522997A3 (enrdf_load_stackoverflow) | 1994-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
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| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE |
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| 17P | Request for examination filed |
Effective date: 19940608 |
|
| 17Q | First examination report despatched |
Effective date: 19950331 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19951011 |