Thanks Romy, Paul
Paul, the i-phone app sounds interesting…sort of capturing the concept. With the audio map established, only minor room tweaks are required to assist overall room improvement (leading to Optimum Object Placement, or ‘OOP’). For example, we can calibrate the sonar testing range from a relatively deep 50Hz up to 800Hz. The transducer must be set at the initial frequency for each test. When testing low frequencies, simply moving an arm chair will result in a different audio plot…while higher frequencies can be better levelled using angled books, cushions, etc. In fact, I have used small round felt pads inserted into the mid-range horn (550Hz to 4,000Hz) to level out a problematic 720-750 frequency null. I then re-run the audio sweep to re-assess levels.