The Masking Level Difference-Speech Version is an auditory processing disorder test. It is considered a binaural interaction test sensitive to low brainstem. This recording employs spondee words imbedded in speech spectrum noise bursts. It is in two sections; section 1 is where both the noise and the spondees are in phase, section 2 is where the noise is in phase and the spondees are 180 degrees out of phase. A release from masking is expected in the latter section.
The Masking Level Difference-Speech Version includes a) audio recording, and b) instructions and score form as printable pdf files. The one-page instructions contain administration, scoring, and interpretation information. Normative data is included, but it is not age-specific. Available from Auditec, Inc. Call 1-800-669-9065 (from US) or 314-416-1050 (outside the US) to order. FREE shipping within the contiguous US.
Masking Level Difference Speech Version; Item 204; Price $123.25 USD + S&H*
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*INTERNATIONAL CUSTOMERS: Online ordering does not include shipping and handling charges. Please email firstname.lastname@example.org with your test selections along with your state or country for an exact quote. If you use online ordering, you will be invoiced later for the shipping charges.