17Speechmap ®

17.1Section overview

Speechmap presents hearing threshold, UCL and amplified speech spectra as SPL in the ear canal. The fitting goal is to make amplified speech audible and comfortable while avoiding discomfort for loud sounds. Speechmap is normally used in SPL and this guide describes only this usage. See 11.4: SPL or HL scale.

This section covers the following topics:

17.2: Speechmap facts

17.7: Screen tour – unaided screen

17.3: DSL 5.0 in Speechmap

17.8: Screen tour - aided screen

17.4:DSL 5.0 changes

17.9: REM or S-REM mode

17.5: NAL-NL1 in Speechmap

17.10: SII calculation in Speechmap

17.6: Using Speechmap

 

Related sections are 18: Speechmap Fitting Procedures and 19: Speechmap Technical Details

FastFacts 17.1: Speechmap 17.2 Speechmap facts

Speechmap is a trademarked hearing instrument fitting environment introduced by Audioscan in 1992. It presents hearing threshold, UCL and amplified speech spectra as SPL in the ear canal. The fitting goal is to make amplified speech audible and comfortable while avoiding discomfort for loud sounds. Originally speech was simulated using amplitude-modulated tonal signals. The RM500SL replaces these simulated speech signals with real speech, both recorded and live. For details of the test signals and analysis methods, see 19: Speechmap Technical Details.

Speechmap departs from insertion gain target methods in presenting amplification goals in the context of the residual auditory area, not as an isolated target line, and in the use of real speech, not tones or broad-band noise. This is extremely important for non-linear hearing aids, analog or digital, because their processing is signal-dependent. It also makes provision to correct audiometric data and 2cc coupler measurements for age-related or individually-measured acoustic differences between real ears and the couplers used for calibration and testing.

The Speechmap environment provides two hearing instrument verification options: REM (real-ear measurement) and S-REM (simulated REM). See 17.9: REM or S-REM mode for details.

FastFacts 17.2: Speechmap facts

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RM500SL User’s Guide Version 2.8

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HP RM500SL manual FastFacts 17.1 Speechmap 17.2 Speechmap facts, FastFacts 17.2 Speechmap facts