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.
©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 auditecinfo@auditec.com.
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 to contiguous US locations. INTERNATIONAL CUSTOMERS: Importers are responsible for duties and taxes. Auditec advises your organization to contact your government to estimate tax prior to ordering.
Echoes on Echoes© (CD Format); Item 165; Price $62.75 USD + S&H 
Echoes on Echoes© (USB Format); Item USB165; Price $68.75 USD + S&H
Auditec, Inc. 
One thought on “Echoes on Echoes©”