字體:小 中 大 | |
|
||
2007/02/07 01:46:52瀏覽743|回應0|推薦3 | ||
OR 1 - How the Saxophone works The saxophone has a reed that, when made to vibrate , beats against the mouthpiece opening ('window'). This alternately opens and closes the mouthpiece which in turn sets up a vibrating air column in the resonator (the brass part) of the saxophone. Here is a diagram of the vibration of the low Bb in a straight soprano saxophone : (All figures in this Course are diagrams. They are intended to explain concepts, not to show instruments, waves, anatomies, etc. realistically.) When the player lifts one finger, a key pad opens. This reduces the wave length of the vibrating air column and raises the pitch of the sound. As the vibration of the air column changes, the vibration of the reed also changes instantly. Down - Up - Top) This is an essential point. The saxophone operates therefore under the principle of resonator control, combined with an obedient reed. Whenever the resonator is shortened or lengthened, the vibrating air column changes its frequency, and the reed changes its vibration in sympathy with it. ( OR 2 - The second Resonator Once this is understood, the next point is inevitable.
By blowing on the saxophone a second resonator is automatically connected to the system. This is the cavity within the body, consisting of the interconnected.
Sound waves travel in all directions, regardless of the direction of air flow. Therefore the reed sets up vibrations in both resonators, the saxophone and the human body. Both resonators send out their own vibrations to the reed. The reed, trying to serve both masters, combines the two directives into one average vibration, which is spread through both resonators.
( OR 3 - Experiment Let us conduct a simple experiment on the saxophone. In saxophone playing you aim to do the opposite to what you did in the experiment.
What did you notice during this exercise ? While both singing and fingering the low G you can feel a strong vibration through your body. As soon as the fingering moves away from the G the body vibration reduces considerably. When it comes back to the G it increases again. What happens ? No matter how good the instrument is, if the body sends out poor vibrations to the reed the overall sound will deteriorate. The body resonator then acts as a mute, it muffles the sound and reduces its quality. If on the other hand the body resonator sends out the same or even better quality vibrations to the reed than the saxophone, the sound quality will be enhanced. The incorporation of tone, colour and feeling are elements exclusively produced by the body resonator. ( OR 4 - PAVE your way to a Superior Sound A good tone requires therefore a well developed body resonator. To develop a good body resonator one must work on four aspects. A good posture is essential. The body resonator must not be twisted, contracted or blocked. It must be stretched, but relaxed. A V E We will deal with all above elements in detail in the Saxophone Course. ( OR 5 - Getting started While you are making up your mind, or are waiting for the Saxophone Course you just ordered to arrive in your mailbox, try this simple exercise to get you started. Play the notes of the scale slurred very slowly in groups of 2 notes. (Clarinet or Piano sounds are used for all Audios. The Sax sounds on Midi are just too awful to listen to.) Sustain the first note (of each combinantion of 2) until it sounds as good as you can possibly make it, then start the next note while maintaining the same tone quality you achieved for the first note. Sustain the second note about twice as long as the first one. While playing :
|
||
( 心情隨筆|雜記 ) |