Time Based LERP Coroutine - in Unity

Here is an example for Moving on the X axix

float _sidewaysMovementTime = 1f;
IEnumerator MoveSideways(bool left)
{
    float currentTime = 0;
    float startX = transform.position.x;
    float targetX = transform.position.x + ((left ? -1 : 1) * 0.3f);

    while (currentTime < _sidewaysMovementTime)
    {
        currentTime += Time.deltaTime;
        transform.position = new Vector3(
            Mathf.Lerp(startX, targetX, currentTime / _sidewaysMovementTime),
                transform.position.y, transform.position.z);
        yield return null;
    }
}

Here is an example of audio Fade In and Out using LERP.

IEnumerator FadeIn()
{
    float currentTime = 0;
    while (currentTime < FadeDuration)
    {
        currentTime += Time.deltaTime;
        _audioSourceBackgroundMusic.volume = Mathf.Lerp(0, _startingMusicVolume, currentTime / FadeDuration);
        yield return null;
    }
}

IEnumerator FadeOut()
{
    float currentTime = 0;
    float startingVolume = _audioSourceBackgroundMusic.volume;
    while (currentTime < FadeDuration)
    {
        currentTime += Time.deltaTime;
        _audioSourceBackgroundMusic.volume = Mathf.Lerp(startingVolume, 0, currentTime / FadeDuration);
        yield return null;
    }
}