An automatic corrector for free-field microphone measurements which is devoid of errors inherent in the -feedback-type- field correction schemes has been developed. Using a standard microphone the field pressure-vs-frequency characteristic at a region is recorded together with a triggering tone for starting the oscillator. The standard microphone then is replaced with the unknown microphone. The triggering tone starts the recorder in precise frequency coincidence with the oscillator producing a graph of the true response-frequency characteristic of the unknown microphone.
(See document for exact affiliation information.)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
