Head Mounted Sound Field

TD-001 is a head-mounted sound-field device described for hearing screening, hearing-aid effectiveness assessment and other audiology tests. The catalog presents fixed incidence angle/height and speaker placement on the wearer as ways to reduce position-related matching errors and improve measurement reproducibility. It describes single- or dual-ear measurement, wide-frequency playback, a snug fit and a more portable alternative to a fixed sound-field installation; these are company descriptions, not proof that an acoustic test environment is unnecessary.

Head Mounted Sound Field

Model: TD-001 · Item No.: 200302601

• Single- or dual-ear measurement
• Loudness scaling
• Tone audiometry
• Speech audiometry
• Comparative fitting
• Tolerance testing
• Loudness balance

Power

5 W

Impedance

4 Ω

Sensitivity

90 dB ± 3 dB

Frequency range

65 Hz–20 kHz