Binaural Integration Category

The following items are usually categorized as “Binaural Integration” tests. Click on the test name to learn more about the product.

This is not an exhaustive list. Other Binaural Integration tests may appear in Auditec’s catalog. Go to Auditec’s alphabetical price list to search for a specific test or email auditecinfo@auditec.com for further assistance.

Masking Level Difference

The Masking Level Difference is an auditory processing disorder test. It is considered a binaural interaction test sensitive to low brainstem. There are two versions available: speech or tone. Each version is sold separately; therefore, it is necessary to specify version or item number when ordering. Descriptions of both versions appear described below.

MLD Speech (verbal stimuli):  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.

MLD Tone (500Hz) (nonverbal stimuli):  Designed and recorded by Richard Wilson, this is a short test in which both hetero- and homo-phasic trials are contained.  A release from masking is expected in the heterophasic conditions.

The Masking Level Difference 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, IncCall 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]

[Masking Level Difference Tone Version; Item 206; Price $81.00 USD + S&H]

[NCAP Battery includes Duration Pattern Sequence-Standard, Pitch Pattern Sequence – Adult & Child Versions, Random Gap Detection Test-Standard & Expanded Versions, and Masking Level Difference-Tone Version; Item CD117-9; Price $329.75 USD+ S&H]

[ACAP Battery includes Dichotic Digits-Standard, Duration Pattern Sequence-Standard, Dichotic Word Listening Test, Masking Level Difference-Tone, NU-6 Low Pass Filtered at 750 Hz, Time Compressed Sentence Test, Random Gap Detection Test, Selective Auditory Attention Test, and Competing Sentences combined on one CD; Item CD115-9; Price $549.00 USD + S&H]

Rapid Alternating Speech

The Rapid Alternating Speech is an auditory processing disorder test for both children and adults using verbal stimuli. This binaural interaction test is sensitive to the low brainstem. It consists of a series of sentences that alternate between the ears as they are spoken. The period is 600 msec. with a 50% duty cycle (i.e. 300 msec. per ear).

Rapid Alternating Speech includes a) audio recording, and b) instructions and sentence list. The one-page instructions includes information on administration, scoring, and interpretation. 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. 

[Rapid Alternating Speech; Item 178; Price $65.00 USD + S&H] FREE shipping to contiguous US.

Spondee Binaural Fusion

The Spondee Binaural Fusion is an auditory processing disorder test for both children and adults using verbal stimuli. It is considered a binaural interaction test. It consists of selected child spondee words which have been band-pass filtered in two frequency bands: one for one channel (ear) and the other for the second channel. The low band extends from 500 to 700 Hz, the high band from 1.9 kHz to 2.1 kHz. The recording begins with pulsed speech spectrum noise, passed through the same filters for the purpose of establishing thresholds for those particular frequency bands. These thresholds are to be used to establish the proper presentation levels.

The Spondee Binaural Fusion includes: a) audio recording, and b) instructions and word list. The one-page instructions include 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. 

Spondee Binaural Fusion; Item No. 173; Price $65.00 USD + S&H FREE shipping to contiguous US.