"以粗哑的嗓音说" can be translated into English as "say in a gruff/hoarse voice".
Here, "gruff" and "hoarse" are both adjectives that describe a rough, harsh, or raspy sound, which fits the description of a "粗哑的嗓音" (rough or hoarse voice). You can choose either word based on the specific nuance you want to convey.