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60 hz sine wave

Test Tones (20hz - 20khz)

Here are 20 WAV files you can download to test your hearing and get a feel for sound reproduction. I created these sine waves using the Expression Evaluator function of GoldWave. They were sampled at 44.1 khz 16-bit mono. Each file is 44kb and 0.5 seconds long, but the entire set in ZIP format is only 37kb. Note that many sound cards and speakers won't reproduce the highest or lowest frequencies and noise can mask them also. Ideally they should be copied digitally and played through your stereo system.

If you have the means to reproduce them accurately, these tones should give you a decent map of your hearing range. If you want to do a serious evaluation at home, this hearing test CD is very useful. The normal range for young people is 20hz to 20khz, but high frequency perception declines as we age. The samples are more tightly spaced near the extreme high and low end since that's where hearing falls off. One hertz (hz) equals one cycle/vibration per second. Most music resides between 40hz (bass) and 15khz (cymbals). Note that some of these tones sound much louder than others even though all have the same peak waveform. These variations in the ear's sensitivity are the key to perceptual coding.

20hz30hz40hz50hz 60hz100hz 200hz500hz1,000hz2,000hz
5,000hz 8,000hz10,000hz12,000hz 15,000hz16,000hz17,000hz18,000hz 19,000hz20,000hz

Download all 20 tones in a highly-compressed 37kb ZIP file. Total extracted size is 880kb.


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