What is the 3 to 1 rule Why is it important?
What is the 3 to 1 rule Why is it important? This rule deals with minimizing the audible phasing problems when summing several microphones to mono. The rule states that the source-to-microphone distance of numerous microphones should be three times the distance between the sound source and the nearest microphone.
What does the 3 1 rule state?
The rule states that the source-to-microphone distance of numerous microphones should be three times the distance between the sound source and the nearest microphone.
What is the 3 to 1 rule for descent planning?
A general rule of thumb for initial IFR descent planning in jets is the 3 to 1 formula. This means that it takes 3 NM to descend 1,000 feet. If an airplane is at FL 310 and the approach gate or initial approach fix is at 6,000 feet, the initial descent requirement equals 25,000 feet (31,000–6,000).