You wouldn't run 5 miles (8.0 km) out of the gate, so don't expect your voice box to be able to go up and down 3 octaves either. Doing scales slowly warms up your voice, extending it to its top and bottom ranges. And it's pretty easy to do, even alone. If you are breathing right and holding yourself correctly, it'll be easier to hit those notes in your high register. Be patient, though, and work gradually. You'll actually hurt your voice if you start off too low or too high, forcing it to do things it really doesn't want to do. Another common method to warming up apart from scales are trills. They relax the lip and tongue, engage breathing, and eliminate tension.  For lip trills, simply create a raspberry sound by loosely placing your lips together. Experiment with different consonant sounds, like "h" and "b." Go slowly up and down your range, but don't do anything that's uncomfortable or hard to maintain. For tongue trills, think of the Spanish "r." Place your tongue behind your upper teeth and exhale strongly.  Hold the sound and air steady, varying the pitch while trilling. Again, don’t do anything your voice doesn't want you to do. You'll know. Some of the more fun warm ups are sirens and kazoos. When you do your siren (which should start low and go high), use your arm and toss it in a circular motion, going up and down with the pitch.  Kazoos focus of the sound and stretch the vocal folds in a healthy, controlled way. Just pretend like you're sucking in spaghetti -- it's as simple as that. On an exhale, make the “woo” sound; it'll come out like a buzz. Holding the sound steady, go up and down to the extremities of your range. Do this several times. Try some tongue twisters going up and down in tunes. This is preparing your voice for complexed songs. A good one is 'Seven salty sailors sailed the seven seas (repeat up in Do Re Me.) Humming actually helps cool a voice down, too, which is an oft-forgotten, though important, technique. It warms up your voice without straining your voice like singing can. Release your jaw and relax your shoulders. Inhale normally and exhale on a "hum." Go from high to low, like a sighing half-siren. If you feel a tickling around your nose and lips, good job.
تدرب على الطبقات. تمرن من خلال زغردة اللسان والشفتين. قم بتمرينات تقليد أصوات صافرة الإنذار والمزمار. همهم.