What type of microphone polar pattern is generally preferred for recording vocals in an untreated room to minimize ambient noise?

When recording vocals in an untreated room to minimize ambient noise, a cardioid polar pattern is generally preferred. A microphone's polar pattern describes its sensitivity to sound from different directions. A cardioid pattern is most sensitive to sound coming from the front of the microphone, less sensitive to sound coming from the sides, and rejects sound coming from the rear. This directional characteristic helps to isolate the vocal performance and minimize the pickup of unwanted ambient noise and....