Now Recruiting: US English Speakers for a 30-Minute Smartphone Voice Study

WHAT YOU WILL DO: Record 48 short phrases: 30 versions of a provided phrase and 18 similar-sounding phrases. Say each phrase at three speeds: slow, medium, and fast. Record in a quiet room at home using your phone. WHO CAN PARTICIPATE Adults 18 and older living in the United States. Fluent American-English speakers whose everyday speech reflects their US region (Northeast, South, Midwest, or West).All genders and age groups are welcome. Participants complete demographic questions at sign-up to ensure a balanced mix. EQUIPMENT AND SETUP Use your phone's built-in microphone only (no external or studio microphones).Find a quiet room without background noise or strong echo. Place your phone on a stable surface or stand (not handheld) at your assigned distance: Near (1–3 ft), Mid (6–10 ft), or Far (13–16 ft).Speak naturally and clearly, pausing about half a second before and after each phrase. PAY $12 USD flat fee paid within 7–10 business days after recording approval. Recordings are verified for clear audio, accurate reading of phrases, correct distance setup, and regional match. There is no cost to participate. We will never ask for payment or your Social Security number.