Echoes on Echoes is considered a good test for the non-verbal or difficult to test. It consists of various frequencies, steady and changing. They were frequency-modulated, interrupted and reverberated between tracks at various rates and degrees. Often the signal appears to move from one transducer to the other (when presented dichotically, or through stereo speakers).
The purpose is to provide novel stimuli for attracting attention. The recording has been employed successfully to estimate hearing levels of severely mentally retarded individuals who had resisted more conventional efforts to ascertain hearing function. It is most effective when presented through a two-channel speaker system.
Echoes on Echoes includes: the audio recording only.This product does not include administration instructions or normative data. It is assumed that purchasers of Auditec’s products are well trained in their use, purpose, and interpretation. 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.
Echoes on Echoes; Item 165; Price $62.75 USD + S&H*
NOTE: Online ordering cannot be used for custom CDs. If you want this recording combined on a CD with other recordings, please email firstname.lastname@example.org with your test selections along with your state or country instead of using the “Buy Now” button. You will receive a Paypal invoice for your custom order.
*INTERNATIONAL CUSTOMERS: Online ordering does not include shipping and handling charges. Please email email@example.com 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.