Masking Level Difference-Speech©

The Masking Level Difference-Speech© 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© 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.

©COPYRIGHT NOTICE: Auditec’s recordings are protected by copyright. Each product represents one license for up to two audiometers at one location. Sharing, uploading to servers, publishing to the internet, and all other forms of distribution are prohibited. Email questions regarding copyright to

Available from Auditec, Inc. Use the “Buy Now” button below or call 1-800-669-9065 (from US) or 314-416-1050 (outside the US) to order. FREE shipping within the contiguous US. INTERNATIONAL CUSTOMERS: Importers are responsible for duties and taxes. Auditec advises your organization to contact your government to estimate tax prior to ordering.

Masking Level Difference Speech© (CD Format); Item 204; Price $123.25 USD + S&H 
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Masking Level Difference Speech© (USB Format); Item USB204; Price $129.25 USD + S&H 
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