Patent ID: 8269095

Claim:
A method for measuring and presenting a frequency response of a magnetic pickup, and presenting for comparison said frequency response of said magnetic pickup against previously recorded frequency responses of previously measured magnetic pickups, comprising of the steps of (a) connecting electrically to said magnetic pickup one of several selectable load circuits; and (b) placing an excitation coil having an inductance less than 1% of the inductance of said magnetic pickup in proximity to said magnetic pickup; and (c) driving said excitation coil with an excitation signal whereby said magnetic pickup is excited with a magnetic field generated by said excitation coil; and (d) measuring and recording a frequency response of said magnetic pickup in response to said excitation signal; and (e) measuring and recording a resistance of said magnetic pickup, and a resistance of a musical instrument volume control if present; and (f) presenting graphically said recorded frequency response of said magnetic pickup, and presenting for graphical comparison zero or more said previously recorded frequency responses of said previously measured magnetic pickups; and (g) presenting said recorded frequency response of said magnetic pickup for aural playback by filtering a reference audio clip using said recorded frequency response of said magnetic pickup, and playing the resultant audio; and (h) presenting numerically said recorded resistance of said magnetic pickup, and said recorded resistance of said musical instrument volume control if present, whereby said recorded resistance of said magnetic pickup and said recorded resistance of said musical instrument volume control are used to understand gain and resonance characteristics exhibited in said recorded frequency response of said magnetic pickup.