A system comprising: a sound processor associated with a patient; a first microphone communicatively coupled to the sound processor and configured to detect an audio signal presented to the patient and output a first output signal representative of the audio signal; a second microphone communicatively coupled to the sound processor and configured to detect the audio signal presented to the patient and output a second output signal representative of the audio signal; wherein the sound processor is configured to receive the first and second output signals, determine that a difference between the first and second output signals meets a threshold condition, the meeting of the threshold condition indicating that a quality level of the first microphone is below an acceptable level, and perform, in response to the determination that the difference between the first and second output signals meets the threshold condition, a predetermined action associated with the quality level of the first microphone; wherein the sound processor is configured to determine that the difference between the first and second output signals meets the threshold condition by: identifying a first filtered portion from the first output signal by low-pass filtering the first output signal according to a low-pass filter definition having a cutoff frequency equal to c/(X*d), where c is a speed of sound in air, d is a distance between the first and second microphones, and X is a value greater than three; identifying a second filtered portion from the second output signal by low-pass filtering the second output signal according to the low-pass filter definition; and determining that a difference between the first and second filtered portions meets the threshold condition. a sound processor associated with a patient; a first microphone communicatively coupled to the sound processor and configured to detect an audio signal presented to the patient and output a first output signal representative of the audio signal; a second microphone communicatively coupled to the sound processor and configured to detect the audio signal presented to the patient and output a second output signal representative of the audio signal; wherein the sound processor is configured to receive the first and second output signals, determine that a difference between the first and second output signals meets a threshold condition, the meeting of the threshold condition indicating that a quality level of the first microphone is below an acceptable level, and perform, in response to the determination that the difference between the first and second output signals meets the threshold condition, a predetermined action associated with the quality level of the first microphone; receive the first and second output signals, determine that a difference between the first and second output signals meets a threshold condition, the meeting of the threshold condition indicating that a quality level of the first microphone is below an acceptable level, and perform, in response to the determination that the difference between the first and second output signals meets the threshold condition, a predetermined action associated with the quality level of the first microphone; wherein the sound processor is configured to determine that the difference between the first and second output signals meets the threshold condition by: identifying a first filtered portion from the first output signal by low-pass filtering the first output signal according to a low-pass filter definition having a cutoff frequency equal to c/(X*d), where c is a speed of sound in air, d is a distance between the first and second microphones, and X is a value greater than three; identifying a second filtered portion from the second output signal by low-pass filtering the second output signal according to the low-pass filter definition; and determining that a difference between the first and second filtered portions meets the threshold condition. identifying a first filtered portion from the first output signal by low-pass filtering the first output signal according to a low-pass filter definition having a cutoff frequency equal to c/(X*d), where c is a speed of sound in air, d is a distance between the first and second microphones, and X is a value greater than three; identifying a second filtered portion from the second output signal by low-pass filtering the second output signal according to the low-pass filter definition; and determining that a difference between the first and second filtered portions meets the threshold condition.