Original sentence: "  The NFB approves the Nissan Leaf’s forward motion sound, but it said the forward noise should also be used for reversing because the “intermittent sound is not as effective as a continuous sound” and that the car should emit warning sounds when it is idling, not only when it’s moving slowly.After the new sounds were publicized, the U.Due to significant noise reduction typical of electric vehicles traveling at low speeds, the Leaf will include sounds, one for forward motion and another for reverse, to alert pedestrians, the blind and others to their presence.National Federation of the Blind (NFB) issued a statement saying that "while it was pleased that the alert existed, it was unhappy that the driver was able to turn it off.Nevertheless, their main complaint is that they don’t think the driver should be able to switch the sound off.Nissan explained that during the development of the sound they studied behavioral research of the visually impaired and worked with cognitive and acoustic psychologists, including the National Federation of the Blind, the Detroit Institute of Ophthalmology, experts from the Vanderbilt University Medical Center and a Hollywood sound design studio.Nissan said that there were six or seven finalist sounds, and that sound testing included driving cars emitting various sounds past testers standing on street corners, who indicated when they first heard the approaching car.The system is controlled through a computer and synthesizer in the dash panel, and the sound is delivered through a speaker in the front driver’s side wheel well
Edited sentence: Due to significant noise reduction typical of electrical vehicles traveling at low speeds, the Leaf will include a sound to alert pedestrians, the blind and others to their presence.Nissan explained that during the development of the sound they studied behavioral research of the visually impaired and worked with cognitive and acoustic psychologists.The system is controlled through a computer and synthesizer in the dash panel, and the sound is delivered through a speaker in the engine compartment