1
First step
First we draw an oval, and then use two diagonal lines to draw a trapezoid-like amplifier barrel. Then we draw another trapezoid in the opposite direction where the speaker collects sound. This way we have the rough outline of the speaker.
2
No. Step 2
Then we draw the thickness of the speaker with an arc inside the oval, and then draw a trapezoid and Generating device composed of circles. After drawing it, we draw a concave handle for the horn, and then draw a diagonal line on the sound place to indicate the sound and color it. In this way, our trumpet is completed.
