The sound frequencies in this sweep are all of equal amplitude but are not all perceived as equally loud: inaudible at the extremes 20Hz and 20KHz, and with loudness peaks at around 1KHz and 10KHz.

http://en.wikipedia.org/wiki/File:Perceived_Human_Hearing.svg

Comments

• 
  Oh_Richard 1 year, 11 months ago

  Thanks, a really useful upload.
• 
  Timbre 7 years, 6 months ago

  There will be variation from person to person, and also different audio-amplifiers and louspeakers/headphones will have different peaks in their frequency responses which complicates matters.
• 
  unfa 7 years, 6 months ago

  I have hearning peaks at 2.6 kHz and 8 kHz.
• 
  Timbre 8 years, 10 months ago

   . AlienXXX Listen carefully for the aliasing at the very high frequencies - it is there, if youknow what to listen for :-)
  .
  Aliasing only present on this Freesound preview, not when it’s downloaded.
• 
  AlienXXX 8 years, 10 months ago

  Listen carefully for the aliasing at the very high frequencies - it is there, if youknow what to listen for :-)

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