<prompt> All are subjective tests for audiometry except:Tone decayImpedance audiometrySpeech audiometryPure tone audiometry  <response>: b Impedance audiometryRef. Scott Brown, 6th ed., Vol 2; 2121Impedance audiometry is an objective test. It does not require the cooperation of patient.Other objective audiometry tests are; OAEs, Electrocochleography and BERA 