Bocal

Bocal

A bocal is the mouthpiece of a musical instrument. It's a curved, tapered tube, which is an integral part of certain woodwind instruments, including the bassoon, contrabassoon, and English horn, and which connects the reed to the rest of the instrument. Bocals can be made from a variety of metals, including nickel silver, brass, sterling silver, or even gold, and are covered at the lower end with a cork sleeve, allowing the bocal to fit tightly in the socket at the top of the instrument. More recently, at least one maker is producing bocals made of hardwood. [http://www.robertronnes.com/paraschos.bassoonbocal.html] The reed either fits directly on to the tapered end of the bocal (as with the bassoon) or is tied to a metal tube which fits to the bocal (as with the English horn).

Since the early days, the bassoon bocal invariably has had a small hole drilled in the side just above the cork to assist in overblowing at the octave. On baroque and Classical-era bassoons, this hole is very small in diameter and remains open all the time. On bassoons fitted with a "whisper" or "pianissimo" key (post 1900), the hole vents through a raised "nipple" and can be closed as needed to facilitate the response in the lower register.

Bocals are made in varying lengths, often with markings such as "1", "2" and "3", which allow the instrument to be played at higher or lower pitch levels.

Bocals for larger sizes of recorder sometimes include a valve to remove condensation and sometimes are adjustable to permit playing while seated or standing. Recorder players blow directly into a bocal and its length has no influence on pitch.

In Britain, the term "crook" is much more commonly used.

External links

* The Bocal works like a diffuser (automotive): [http://www3.interscience.wiley.com/cgi-bin/fulltext/107642391/PDFSTART]


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  • bocal — bocal …   Dictionnaire des rimes

  • bocal — bocal, aux [ bɔkal, o ] n. m. • 1532; it. boccale, bas lat. d o. gr. baucalis « vase à rafraîchir » ♦ Récipient à col très court et, ordinairement, à large ouverture. Fruits conservés en bocaux. Un bocal de cornichons. Bocaux de pharmacien. Bocal …   Encyclopédie Universelle

  • Bocal — Saltar a navegación, búsqueda Aquí se muestra un bocal (o tudel) insertado en un trombón. El bocal es la parte que empieza desde el corcho marrón hasta la caña que tiene un hilo gris. El bocal es una pieza cilíndrica de metal curva utilizada en… …   Wikipedia Español

  • bocal — BOCÁL s.n. v. pocal. Trimis de valeriu, 13.09.2007. Sursa: DEX 98  bocál ( le), s.n. – Pahar, cupă. – var. (Trans.) bucal, pocal. Este cuvînt care trebuie să fi intrat în rom. prin diverse căi, cf. fr. bocal (din it …   Dicționar Român

  • bocal — BOCAL. s. m. Vase de verre, ou d autre chose. Bocal de crystal de Venise. bocal de vermeil doré …   Dictionnaire de l'Académie française

  • bocal — BOCAL. s. m. Mot pris de la Langue Italienne, pour signifier, Une bouteille de verre ou de grès, dont le col est court et l ouverture large, et qui sert à différens usages. Un bocal de vin. [b]f♛/b] Il se dit encore d Une espèce de bouteille… …   Dictionnaire de l'Académie Française 1798

  • boçal — adj. 2 g. s. 2 g. Que ou quem tem pouca educação, pouca inteligência ou pouca delicadeza. = ESTÚPIDO, GROSSEIRO   ‣ Etimologia: origem controversa   • Confrontar: buçal. boçal s. m. 1. O mesmo que buçal. 2.  [Portugal: Alentejo] Rede de corda que …   Dicionário da Língua Portuguesa

  • bocal — Bocal, ou, et mieux, Boscal, m. acut. Est diminutif de Bois prins pour Forest, comme si l on disoit petite Forest, Syluula. En Maugist: Je conseille qu elle soit mise dans ce boscal, jusques à ce que l estour ayt fait son finement. Et peu apres,… …   Thresor de la langue françoyse

  • Bocal — Bo cal, n. [F.] A cylindrical glass vessel, with a large and short neck. [1913 Webster] …   The Collaborative International Dictionary of English

  • Bocal — Bocal, Boccale, Becher, Flüssigkeitsmaß in Italien, Morea und den jonischen Inseln von sehr verschiedenem Gehalte, 343/4 bis 10713/20 Par. Kubikzoll …   Herders Conversations-Lexikon

  • bocal — s. m. 1. Abertura, geralmente redonda. = BOCA 2. Boca do castiçal, para a vela. 3. Peça de metal onde entra a chaminé do candeeiro. 4. Embocadura dos instrumentos de sopro. 5. Canhão de mangá. 6. Betilho. 7. Peças laterais do bocado do freio.… …   Dicionário da Língua Portuguesa

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