Hearing Test

Scientists fail this at a high frequency

All personnel must complete this timed hearing test. It will be instrumental in future employment evaluations.

PLEASE LOWER YOUR VOLUME

6MB

Hearing Test.mp3

This file was an old hearing test, and as hinted by being "timed" the first task is identifying the length of each of the tones. The length of each tone in seconds is listed below:

9 3 5 2 5 5 18 19 21 7 1 18 3 1 14 1 12 19 15 13 1 3 5 12 12 1 18

This string can be converted letters using A1Z26 to give ICE BEER SUGAR CANAL SOMA CELLAR

These words are a hint for the next step as the words CUBE ROOT can be inserted between each set to make a valid item. [ICE CUBE] [ROOT BEER] [SUGAR CUBE] [ROOT CANAL] [SOMA CUBE] [ROOT CELLAR]. Cube Root is a hint that each of the frequencies are a cube root.

Peak Frequencies

Extracting the exact frequencies of each tone (SonicVisualizer is a free software, using peak frequency spectrogram works well) gives the following list of frequencies where taking the cube root results in a number 1-26 that can be converted to letters.

Frequency	Cube Root	Letter
6859	19	S
729	9	I
13824	24	X
125	5	E
729	9	I
343	7	G
512	8	H
8000	20	T
3375	15	O
2744	14	N
125	5	E
216	6	F
3375	15	O
9261	21	U
5832	18	R
6859	19	S
125	5	E
10648	22	V
125	5	E
2744	14	N
8000	20	T
12167	23	W
3375	15	O
1331	11	K
125	5	E
15625	25	Y
6859	19	S

This gives a final message of SIX EIGHT ONE FOUR SEVEN TWO KEYS, and taking the cube root of 681472^(1/3)=88, giving a message of 88 KEYS, a crossword clue for the final answer of PIANO.