What is the minimum decibel level for "ah" responses necessary for satisfactory improvement tracking?

The minimum decibel level for "ah" responses necessary for satisfactory improvement tracking is 75 decibels. This specific level is established to ensure that the responses are loud enough to be clearly perceived and measured, allowing for an accurate assessment of the individual's vocal improvements over time. Maintaining a consistent benchmark like this is crucial for effective tracking, as it provides a standardized method to evaluate progress. Higher levels may not be necessary for the purpose of tracking improvements, while lower levels could lead to unreliable assessments due to potential inaccuracies in capturing the sound effectively.