Radio Shack Sound Level Meter Manuel du propriétaire télécharger pdf (Page 18)

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Controls

Depending on the speaker placement,

standing waves might also develop in the

room, giving your system a “peaky”, ec-

centric response.

To determine a room’s acoustics, analyze

the acoustics with your meter and a suit-

able test recording. The test recording

should produce pure tones, one at a time,

at intervals spanning the audio spectrum.

Make a graph or table showing the sound

levels generated by the individual tones.

This gives you a clear idea of the frequen-

cy response of your “total system”—home

theater equipment and room included.

To smooth out the response, adjust the

tone controls and vary the speaker place-

ment. To approximate the ideal, “flat re-

sponse”, you could add a frequency

equalizer to your home theater system.

Your local RadioShack store carries fre-

quency equalizers that let you boost or cut

response in different ranges, as indicated

by your frequency response analysis.

Properly equalized, your system can

sound like one costing considerably more!

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