Unity how to make the audiosourse pitch smoothly increase when moving, and also decrease when stopped?

Question

C++ / C#

The character (vehicle) moves like this:

void FixedUpdate()
{
float v = Input.GetAxis("Vertical");
float h = Input.GetAxis("Horizontal");
body.AddForce(transform.right * tankSpeed * v, ForceMode2D.Impulse);
body.AddTorque(tankRotationSpeed * h * -Mathf.Sign(v), ForceMode2D.Impulse);
}

audiosource is played when starting with pitch = 1
so how to make it smoothly increase pitch to 1.3 when it moves, and then also smoothly decrease to 1 when it stops?

Answer 1

Got it. I just found the numerical value of the speed (speed = body.velocity.magnitude) and got currentPith = defaultPitch + speed /100.