LOS ANGELES — A towering figure such as Abraham Lincoln, who stood 6 feet 4 and was one of history’s master orators, must have had a booming voice to match, right? Not in Daniel Day-Lewis’ interpretation.

Day-Lewis, who plays the 16th president in Steven Spielberg’s epic film biography “Lincoln,” which goes into wide release this weekend, settled on a higher, softer voice, saying it’s more true to descriptions of how the man actually spoke.

“There are numerous accounts, contemporary accounts, of his speaking voice. They tend to imply that it was fairly high, in a high register, which I believe allowed him to reach greater numbers of people when he was speaking publicly,” Day-Lewis said in an interview. “Because the higher registers tend to reach farther than the lower tones, so that would have been useful to him.”...