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Headset

Belongs to:
Consumer electronics
Synonyms:
Earphones, Headphones
Description:

Headphones are acoustic transducers which are worn at the ears in order to locally restrict audio signals.
A headset supplement a headphone with a microphone for telephone conversations without using a handset. The headset or headphone can be tethered or wireless. Wireless versions use radiofrequency fields like WLAN or Bluetooth for data transmission.

Frequency ranges:
  • 0 Hz
  • 30 Hz–20 kHz
  • 2.4–2.5 GHz (WLAN or Bluetooth)
Type of field:
electric, magnetic, and electromagnetic

Measurements (acc. to literature)

headset
Measurand Value Feature Remarks
magnetic flux density 3.4–44.5 nT (maximum, measured) tethered range: 606 - 3066 Hz; while playing music and power off; measuring points in and at the head with 28 headsets [1]
magnetic flux density 6.6–13 nT (maximum, measured) tethered range: 6 - 54 Hz; while playing music and power off; measuring points in and at the head with 28 headsets [1]
magnetic flux density 117–123 nT (maximum, measured) tethered range: 54 - 606 Hz; while playing music and power off; measuring points in and at the head with 28 headsets [1]
magnetic flux density 50.8–93.2 µT (min-max value, measured) tethered range: 0 - 6 Hz; while playing music and power off; measuring points in and at the head with 28 headsets [1]
headphones
Measurand Value Feature Remarks
magnetic flux density 0.1–1 mT (measured) not specified brand not specified: at the surface [2]
magnetic flux density 1.1 mT (measured) tethered JVC HA-FX33A in-ear: at the surface [3]
magnetic flux density 7.9 mT (measured) tethered Phillips SBC HS430 clip-on: at the surface [3]
magnetic flux density 11.1 mT (measured) tethered Bose in-ear: at the surface [3]
magnetic flux density 21.5 mT (measured) tethered Phillips SHE5920 in-ear: at the surface [3]
magnetic flux density 24 mT (measured) tethered Apple in-ear: at the surface [3]
magnetic flux density 25.2 mT (measured) tethered JVC HA-F130A in-ear: at the surface [3]
magnetic flux density 26 mT (measured) tethered Sony MDR-E828LP in-ear: at the surface [3]
magnetic flux density 34.4 mT (measured) tethered Sony MDR-Q22LP clip-on: at the surface [3]
power density 52 µW/m² (maximum, measured) wireless at 864 MHz, distance: 1 m [4]
power density 325 µW/m² (maximum, measured) wireless at 864 MHz, distance: 1 m [4]

References

  1. Kaune WT et al. (2002): Magnetic fields produced by hand held hair dryers, stereo headsets, home sewing machines, and electric clocks
  2. Moser M et al. (2006): [Non-ionizing radiation and health protection in Switzerland: basic information]
  3. Lee S et al. (2009): Clinically significant magnetic interference of implanted cardiac devices by portable headphones
  4. Schmid G et al. (2007): Exposure caused by wireless technologies used for short-range indoor communication in homes and offices