Sine/sine wave is a sine proportional curve in mathematical trigonometric function. It also represents an analog signal, not a square wave representing a digital signal.

Sine curve can be expressed as y=Asin(ωx+φ)+k, and defined as the image of function y=Asin(ωx+φ)+k in rectangular coordinate system, where sin is the sine symbol, x is the value on the X axis of rectangular coordinate system, y is the corresponding y value of this function in the same rectangular coordinate system, and k, ω and φ are constants (k, ω, φ ?).

Sine curve can be expressed as y=Asin(ωx+φ)+k, and defined as the image of function y=Asin(ωx+φ)+k in rectangular coordinate system, where sin is the sine symbol, x is the value on the X axis of rectangular coordinate system, y is the corresponding y value of this function in the same rectangular coordinate system, and k, ω and φ are constants (k, ω, φ ?).

A—— the amplitude when the object reciprocates in a straight line and its trajectory conforms to a sinusoidal curve, and its value is 1/2 stroke.

(ωx+φ)- phase, reflecting the state of the variable y.

φ-initial phase, the phase when x=0; Reflected in the coordinate system is the left and right movement of the image.

K-offset, which is reflected in the coordinate system when the image moves up and down.

Ω-angular velocity, which controls the sine period (vibration times per radian).

The sine function (1) is a wavy line. When x∈R, it must pass through the X axis but not necessarily (0,0).

(2) When the waveform moves, it should be noted that the greater the amplitude A, the greater the difference between the maximum and minimum values of the waveform on the Y axis; The amplitude a becomes smaller, and vice versa; When the angular velocity ω increases, the waveform shrinks on the X axis (the waveform becomes compact); When the angular velocity ω decreases, the waveform extends on the X axis (the waveform becomes sparse).

(3) Another point is that given y=Asin(ωx+φ), if you want to move the waveform to the left or right, you must first change it to the formula y=Asin[ω(x+φ/ω)], and if you want to move m radians to the right, it becomes y=Asin[ω(x+φ/ω-m)].

I hope it can help you solve the problem.