Problemas audición

He hecho el test con los auriculares (calibrados respuesta plana):

• Find the smallest difference in sound levels you can detect. Pasado 0.5 dB
  The Level Series: 6dB 3dB 1dB 0.5dB 0.2dB 0.1dB
• Find the highest frequency you can reliably hear. Pasado 14K
  The Frequency Series: 10kHz 11k 12k 13k 14k 15k 16k 17k 18k 19k 20kHz
• Find the smallest difference in pitch (frequency) you can hear. Pasado 5c
  The Pitch Series: 50c 20c 10c 5c 2c 1c
• Find the shortest timing difference you can reliably hear. NEW Pasado 5ms
  The Timing Series: 1ms 2ms 5ms 10ms 20ms 50ms 100ms
• Find the highest dynamic range offered by your listening environment. Pasado 60 dB
  The Dynamic Range Series: 36dB 42dB 48dB 54dB 60dB 66dB 72dB 78dB
• Do you have the absolute hearing ability? No pasado
  The Perfect Pitch Blind Test: C Scale Chromatic
• Are your ears sensitive to Absolute Phase? No pasado
  The Absolute Polarity Blind Test: Here
• Can you hear a difference between 16-bit and 8-bit audio files? Pasado
  The 16-bit v/s 8-bit Blind Test