Near Field Speaker Analyzing
When analyzing the frequency response of a sound system and/or speaker it is desirable to minimize the effects of the room on the measurement results. Sound reflections from surfaces near the speaker, low frequency room modes, and room absorption effects are examples of room influences that can alter the pink noise response test results. Short of testing the system outside above the ground free of reflections, the next best alternative is to perform a near-field test.
A near-field frequency response test positions the microphone in front and very close to the speaker. The speaker must be placed away from nearby walls or table surfaces to avoid reflections. Place the measurement microphone no more than 3 times the widest dimension of the speaker enclosure. If there are two speakers in the enclosure, position the microphone in the middle of the two speakers and back slightly so the sound has a chance to converge.
In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.