Le 4 janvier 2015, 08:02 dans Humeurs • 0
B in the fifth octave and D in the sixth octave were chosen as the best sounding pair of high and low notes. This selection was done by a company based in the south of France that specialises in acoustics for the car industry. In the words of Ms Forestier, they are the ones who make sure the car door slams with the right sound. But the harmony of the two notes is also affected by other sounds, like that http://www.waxreplica.co.uk/replica-cartier-santos-watches-sale-for-uk.html of the regulator, which is the bane of many repeaters, especially those designed in the nineties and earlier. This was a problem with the CPCP Tortue repeater.
So a silent governor was used, visible at six o’clock on the dial. Silent governors gradually becoming more widespread for new repeater calibres; since the early 2000s they have been used in many new minute repeating calibres.
In addition to pitch, timbre is third element in a good repeater sound. Technically it refers to harmonics of the note, which is derived from the fundamental and dominant frequencies working together. What that means is that two instruments, a trumpet and violin, for instance, can play the same note with the same pitch and same volume, but sound clearly different. That is timbre, put simply. In the case of the repeater, instead of a trumpet or violin, the sound comes from the Replica Tag Heuer Grand Carrera Watches UK | AAA Quality Tag Heuer Grand Carrera For Sale. Hence many iterations of the gong were experimented with, varying the shape, length and cross section, until the ideal timbre was achieved. One of the primary factors affecting timbre was hardness of the hardened steel used for the gong, as the harder the material, the increase in the harmonics of the note. Cartier used a steel alloy of a secret formula for the gong; Ms Forestier notes that the hardened steel balance staff is 600 Vickers while the alloy of the gong is even harder.
The last component is reverberation, or how long the note lingers. A gently lingering note is more pleasant than one which ends sharply. To maximise the reverberation, the hammer strikes on the gong have to be of constant power, to ensure acoustic resonance. And the interval between strikes has to be of the right duration, and every interval has to be the http://www.waxreplica.co.uk/replica-rolex-submariner-watches-sale-for-uk.html same length. All of these factors meant that the process of developing the repeater was scientific and also lengthy. But the prototype of the repeater sounds excellent, so clearly the in-depth acoustic research has paid off. The final production pieces, which will come sometime at the end of the year, will certainly be outstanding.
Visually the repeater is handsome, with a strikingly symmetrical, two-level dial with in the style of Cartier Fine Watchmaking. All the traditional Cartier design elements are present too, blue steel sword hands, guilloche and Roman numerals. However, the 45 mm case is large and may be discouraging for some. Given how complex a minute repeater alone is, the tourbillon at 12 o’clock seems superfluous, and it does clutter the dial somewhat. I would have preferred the watch sans tourbillon. But a tourbillon is not overly difficult to include and still carries cachet, especially amongst novice collectors, so its inclusion is understandable from a commercial perspective.