speech audiometry n.
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Speech Audiometry. Pure Tone Audiometer. Schematic of Speech Audiometer. Speech Audiometer. Clinical or Diagnostic Audiometer. two channels test booth input: pure tone or microphone or CD or phonograph or tape player or computer masking system talk-back system

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Presentation Transcript
clinical or diagnostic audiometer
Clinical or Diagnostic Audiometer
  • two channels
  • test booth
  • input: pure tone or microphone or CD or phonograph or tape
  • player or computer
  • masking system
  • talk-back system
  • selector switch for input on each channel
  • volume control (VC) and volume unit (VU) meter
clinical or diagnostic audiometer continued
Clinical or Diagnostic Audiometer(Continued)
  • amplifier
  • attenuator
  • output selector
    • AC phones
    • BC vibrator
    • 2 loudspeakers
  • talk back system
  • patient signal device
testing
Testing
  • Monitored live voice (MLV)
  • Pre-recorded voice
  • Attenuation: 1—2 dB steps (usually use 5 dB steps) 0—110 dB range
  • SDT and SAT
speech recognition threshold srt
Speech Recognition Threshold (SRT)
  • CID W-1 (constant level)
  • CID W-2 (attenuated)
  • Spondiac words (spondees)
  • Carrier phrase
  • Watch cross hearing—masking
  • PTA is about = to SRT
testing continued
Testing (continued)
  • Most Comfortable Loudness (MCL)
  • Connected discourse
  • UCL, TD or LDL
  • Range of Comfortable Loudness (RCL) vs. Dynamic Range
speech discrimination score sds vs word recognition score wrs
Speech Discrimination Score (SDS) vs. Word Recognition Score (WRS)
  • Recorded in percentage, not dB
  • Phonetically Balanced (PB) words (50 monosyllabic)
  • PB 50 or CID Auditory test W-22
  • PB Max = patients best discrimination score (25-40 dB SL)
  • Word Intelligibility by Picture Identification test (WIPI)
  • 90—100% = normal
  • 76—90% = slight difficulty (i.e. telephone)
  • 60—76% = moderate problem
  • 50—60% = poor recognition—difficulty interpreting speech
  • < 50% = very poor recognition. Unable to understand speech