TEXT: 1�
  More About Hearing 
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  More About Hearing 
   Hearing senses sound frequencies. 
  Hearing-2 
   
  THE FREQUENCIES OF SOUND 
   The Hearing String identifies the sound frequencies (pitch) 
  which a sophont can hear, and the sound frequencies of the 
  sophont voice. 
   F Freq. The central frequency the ear can hear in Hertz (= 
  cycles per second). F is a power of 2 (so, if F=8, Freq = 2^8 = 
  256). The difference between any two Freq values is an 
  Octave. 
   S Span. The number of Octaves above and below Freq. If 
  S=1, then the span of sound the sophont can hear is one 
  octave above and below Freq. 
   V Voice. The central frequency of the voice in Hertz. 
   R Range. The number of Octaves above and below Voice.  
   
  THE FREQUENCIES OF SOUND 
  Flux  Code Freq (Hz) Formula 
  Description 
   
   
  -9 
  1 
  2 2^  1 C  d 
  delta 
   
  -8 
  2 
  4 2^  2 C  th theta 
   
  -7 
  3 
  8 2^  3 C  a 
  alpha 
   
  -6 
  4 
  16 2^  4 C  0 
  beta 
   
  -5 
  5 
  32 2^  5 C  1 
  gamma 
   
  -4 
  6 
  64 2^  6 C  2 
  Low human audible. 
   
  -3 
  7 
  128 2^  7 C  3 
   
   
   
  -2 
  8 
  256 2^  8 C  4  Middle C 
   
  -1 
  9 
  512 2^  9 C  5 
   
   
   
  0 
  A 
  1,000 2^10 C  6 
   
   
   +1 
  B 
  2,000 2^11 C  7 
   
   
   +2 
  C 
  4,000 2^12 C  8 
  High human audible. 
   +3 
  D 
  8,000 2^13 C  9 
   
   
   +4 
  E 
  16,000 2^14 C10 
  Dog whistle 
   +5 
  F 
  32,000 2^15 C11 
   
   
   +6 
  G 
  64,000 2^16 C12 
   
   
   +7 
  H 
  128,000 2^17 C13 
   
   
   +8 
  J 
  256,000 2^18 C14 
   
   
   +9 
  K 
  524,288 2^19 C15 
   
   
   Pitch is sound frequency (in Hertz; in cycles per second). 
  Each increase in pitch is twice the frequency of the previous 
  level and equals one octave. 
   
  Calculating What Sounds Can Be Heard 
   Human Hearing is H-16-9392. 
   Frequency =9. Human hearing is centered on Frequency 
  =9 = 2^9 cycles per second = 512 hertz. This corresponds to 
  C5 on the Musical Pitch Chart. 
   Span = 3. Human hearing extends 3 octaves above and 
  below the central Frequency. A human can hear sounds from 
  2^6 (= 64) Hz  to 2^12 (= 4000 ) Hz.  
   Voice= 9. The human voice is centered on Voice= 9 = 2^9 
  cycles per second = 512 hertz. This corresponds to C5 on 
  the Musical Pitch Chart (the Human male voice is one octave 
  lower). 
   Range = 2. The human voice extends 2 octaves above 
  and below the central Voice frequency. A human can make 
  sounds from 2^7 (= 128) Hz to 2^11 (= 2000 ) Hz. The 
  Human Male is about one octave lower. 
   
  SPECIAL SOUNDS 
   Some frequencies of sound 
  have additional effects outside of 
  the sense of hearing (they have 
  no effect on sophonts who hear 
  the Frequency naturally). 
   
   F=1. Delta Waves. Induces or 
  promotes sleep. After 5 minutes 
  of exposure, Check C3: Failure = 
  Character falls asleep for 1D 
  minutes the first time; 1D hours 
  the second time. 
   F=2. Theta Waves. Induces 
  hypnotic or trance suggestive 
  states. After 5 minutes, a 
  Personal against the subject may 
  include Mod = Good Flux. 
   F3. Apha Waves. Induces 
  relaxation states. After 5 minutes, 
  the subject is Sleepy. 
   F=4. Beta Waves. Induces 
  alertness. After 1 minute of 
  exposure, subject is Ordinary for 1 
  hour, followed by a return to 
  previous attention level. 
   Many alarms include output at 
  F=4 (overuse checks San). 
   F=5. Gamma Waves. Induces 
  heightened productivity. After 5 
  minutes, subject is Optimal for 1 
  hour, followed by a return to 
  previous attention level. 
   
  TECHNOLOGICAL 
  HEARING 
   Many devices input, process, 
  and output sound. A Hearing 
  Device is identified with a Hearing 
  String and may include an 
  enhanced Hearing Constant, a 
  Rang Mod, and alternate sound 
  input and output. 
   
   Player-8 H-16-0093 is a TL-8 
  sound entertainer reproduces 
  sound in the human hearing 
  range. 
   Comm-9 H-16-9090 R=5 inputs 
  and outputs sound (with a tinny 
  quality) and communicates with 
  similar communicators to 
  Range=5. 
  MUSICAL PITCH 
   
   Musical Pitch. Pitch 
  is most understandable 
  in a musical format. 
  The pitch levels shown 
  correspond to musical 
  C (Middle C= 256 
  Hertz). The typical 
  human male voice 
  centers on C4 or 
  Middle C; the typical 
  human female voice 
  centers on C5. 
   
   
  
SOURCE: textdata/thevault/Traveller/09 - Traveller5/Traveller5/T5 Underlying PDFs/T5=1420b Senses Hearing.pdf