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HEARLAB

HEARLAB
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HEARLAB

Product catalog summary
Tests Available:
Aided Cortical Assessment (ACA) and Cortical Threshold Estimate (CTE) are the primary tests available. The results include grand averages, stacked traces for CTE, and statistical analysis for detection and difference.
Recordings:
Assessment records are stored in a database with subject information.
Input Channels:
The system uses a stimulus controller with 2 microphone channels and an electrode processor with 2-channel recording for the cortical response signal and the stimulus signal.
Output Connections:
The system supports output through a free field loudspeaker (test and monitor), insert earphones (left and right), and a bone conductor.
Stimuli and Levels:
  • ACA: Uses speech sounds /m/, /t/, /g/ with free field output only at 55, 65, and 75 dB SPL.
  • CTE: Uses pure tones at frequencies 500, 1k, 1.5k, 2k, 3k, and 4k Hz. Output levels range from -10 to 110 dB HL in 5 dB steps for insert phones, and -10 to 70 dB HL in 5 dB steps for bone conductor (60 dB HL for 500 Hz).
Masking Signals:
CTE uses narrow-band noise for masking.
Hear Lab Specifications:
Details specific to the Hear Lab system are provided but not elaborated in this summary.
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Catalog excerpts

HEARLAB-1

TESTS AVAILABLE: Tests Available: ACA: Aided Cortical Assessment (ACA) Cortical Threshold Estimate (CTE) Test results: Grand averages Statistical analysis for detection and difference Recordings: Assessment records stored in a data base with subject information INPUT CHANNELS: Stimulus Controller: 2 Microphone channels Electrode Processor: 2-Channel recording (the cortical response signal and the stimulus OUTPUT CONNECTIONS: Free field loudspeaker (test loudspeaker) Free field loudspeaker (monitor loudspeaker) Insert earphone, left and right Bone conductor ACA: Stimuli: Speech sounds /m/, /t/, /g/ Output and Level: Free field output only @ 55, 65 and 75 dB SPL Output and Level: Insert phones: -10-110 dB HL, 5 dB steps Bone conductor: -10-70 dB HL, 5 dB steps (60 dB HL for 500 Hz) Masking Signals: CTE: Narrow-band noise www.frye.com • email: [email protected]

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