Controlling Sound with ActionScript

Chiều dài. Của một âm thanh dài có thể cung cấp tín hiệu cảm giác về kích thước (các tiếng thỏ thẻ ngắn của một sừng nhỏ xe so với sự kêu la của sừng một-bán xe tải) và khẩn cấp (các đánh chuông của một chuông bữa ăn tối viciously lắc so với bong dài của một chủ nhật lười biếng chuông nhà thờ). Khối lượng. Một khối lượng của âm thanh cung cấp đầu mối về khoảng cách. Âm thanh to hơn cho cảm giác gần gũi, trong khi âm thanh bao hàm sự yên tĩnh từ xa....
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Controlling Sound with ActionScript < Day Day Up >Controlling Sound with ActionScriptAlthough most of us can enjoy listening to music without thinking too much about whatwere hearing, the vibrations that make up even the most elementary sounds are actuallyfar from simple—a fact made evident by the processing-power requirements of mostaudio-editing programs. Despite the complexity of even the simplest audio clip, however,sounds can be broken down into three basic characteristics: • Length. A sounds length can provide sensory cues about size (the short chirp of a small-car horn compared to the roar of a semi-trucks horn) and urgency (the tinkle of a viciously shaken dinner bell compared to the long bong of a lazy Sunday church bell). • Volume. A sounds volume provides clues about distance. Louder sounds give the feeling of closeness, whereas quiet sounds imply distance. A sound that gradually goes from quiet to loud or vice versa creates a sense of movement. • Panning. Panning represents the position of the sound from left to right or right to left. Like volume, panning allows you to determine the relative position of the element making the sound. If you were to close your eyes at a tennis match, you could accurately determine the position of the ball (left or right of the net) simply by the pop of the ball being smacked by the racket.With Flash, you can control sound characteristics simply by editing sound instances onthe timeline—a solution that works well for presentations that dont require audience oruser participation. However, if you want to give your user control—allowing the user tomove and slide things around—you need a more dynamic solution. Fortunately, you caneasily emulate and control all of these sound characteristics via ActionScript. < Day Day Up >