Data
Evidence tables on assistive listening: device support, measurements, surveys, requirements and standards, with sources and interpretation limits.
Source dates come from the cited library records, at their recorded precision. Read each record for its date basis, which may be publication, an update or document metadata. Undated sources are counted separately. Row counts describe entries, which can overlap; they are not counts of independent studies or available products.
Data licence: CC0 1.0 (public domain dedication). Download all tables as JSON.
Published prices and costs
Published assistive listening prices, quotes and cost estimates, with currencies, years, coverage and source limits.
Device support
Dated evidence on telecoil and Auracast support in hearing devices, with model scope, feature dates and source limits.
Latency
Reported latency values and ranges, with signal paths, timing quantities, methods, configurations and source qualifications.
Measured and checked hearing loops
Installation checks and grouped loop findings, preserving methods, locations, outcomes, sample units and reporting limits.
Neckloop measurements
Neckloop and receiver-pair results, with field or level observations, frequency response, test conditions and reading limits.
Phones and Auracast
Dated phone-family evidence separating Auracast reception from assistant control, with app routes, OS conditions and unresolved values.
Range and coverage
Range and coverage findings across venue systems, with settings, receivers, evidence types, conditions and source limits.
Requirements by country
Selected assistive listening provisions by jurisdiction, instrument and edition, with scope, authority, exceptions and source links.
Standards and law timeline
Selected publication, adoption, application and withdrawal events for assistive listening standards, regulations and codes.
Listener, clinician and venue surveys
Survey findings on preference, use, awareness and satisfaction, retaining response groups, recruitment, denominators and funding.
Venue usage
Reported use of venue listening systems, with loan figures, survey responses, trial participation, periods, denominators and funding.
Reference page
Glossary: Assistive listening terms with English and German definitions, German terms and links to the evidence behind each definition.