References
- BS EN 60645-1 (1995)/IEC 645-1 (1992): Pure Tone Audiometers BSI London 1995, 1992.
- BS EN ISO 389: Acoustics - reference zero for the calibration of audiometric equipment BSI London 1999.
- BS 6950: A standard reference zero for the calibration of pure tone bone conduction audiometers BSI London 1988.
- Lutman, ME. Measurement and calculation of audiometer distortion levels BSA News June 1997 21.
- Haughton, PM. Audiometer calibration: Applying the earphone to the coupler Br J Audiol 1995 29 188–91.
- Lightfoot, GR, Hughes, JB. Bone conduction errors at high frequencies: Implications for clinical and medico-legal practice J Laryngol Otol 1993 107 305–8.
- Smith, PA, Foster, JR. Audiometer calibration: Two neglected areas Br J Audiol 1997 31 359–64.