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This CD will allow you to affordably and quickly correct your sound system, home theater, or PA system for accurate smooth response.

Due to the irregularities of most rooms even the most expensive high end gear cannot provide accurate audio reproduction without adjustments. 1/3 Octave Pink Noise, used in conjunction with an SPL ( sound pressure level ) meter, is a quick and inexpensive option to high dollar sound analyzation equipment such as audio spectrum analyzers and calibrated microphones.

Due to numerous customer requests, primarily home audio and home theater enthusiasts, I've created the "1/3 octave PINK NOISE" test cd. This CD was designed  and tested for use with the Radio Shack SPL although other meters will work just fine.

Each track contains third octave pink noise filtered at common center frequencies. To align your audio system you must have ability to adjust groups of frequencies via an audio equalizer whether integrated with your amplifier or via external components. Many inexpensive home sound systems have a simple 'bass' and 'treble' control which is insufficient to align your sound system but you can still analyze the system as an aid in making a purchasing decision.

Pink Noise Audio Alignment Instructions

SPL Meter Readings Chart

1/3 Octave Pink Noise CD TRACKLIST Test tracks are 2 minutes in length. Each track has a spoken cue indication the track content for ease of use. 1: Spoken Introduction 2: 1khz test tone 0dbfs 3: 1khz test tone -14dbfs 4: Full Spectrum Pink Noise 5: Narrative Comments 6: 20 hz 3rd Octave Pink Noise 7: 25 hz 3rd Octave Pink Noise 8: 32 hz 3rd Octave Pink Noise 9: 40 hz 3rd Octave Pink Noise 10: 50 hz 3rd Octave Pink Noise 11: 62 hz 3rd Octave Pink Noise 12: 80 hz 3rd Octave Pink Noise 13: 100 hz 3rd Octave Pink Noise 14: 125 hz 3rd Octave Pink Noise 15: 160 hz 3rd Octave Pink Noise 16: 200 hz 3rd Octave Pink Noise 17: 250 hz 3rd Octave Pink Noise 18: 315 hz 3rd Octave Pink Noise 19: 400 hz 3rd Octave Pink Noise 20: 500 hz 3rd Octave Pink Noise 21: 630 hz 3rd Octave Pink Noise 22: 800 hz 3rd Octave Pink Noise 23: 1 khz 3rd Octave Pink Noise 24: 1.3 khz 3rd Octave Pink Noise 25: 1.6 khz 3rd Octave Pink Noise 26: 2 khz 3rd Octave Pink Noise 27: 2.5 khz 3rd Octave Pink Noise 28: 3.2 khz 3rd Octave Pink Noise 29: 4 khz 3rd Octave Pink Noise 30: 5 khz 3rd Octave Pink Noise 31: 6.4 khz 3rd Octave Pink Noise 32: 8 khz 3rd Octave Pink Noise 33: 10 khz 3rd Octave Pink Noise 34: 13 khz 3rd Octave Pink Noise 35: 16 khz 3rd Octave Pink Noise