Microphones and earphones for speech communications Ingestion-build-47786 Integration of nullable value types

Integration of nullable value types

It now incorporates informative Annex B from BS EN 1090-2 Execution of steel structures and aluminium structures

Who is this BS 8233 - Guidance on sound insulation and noise reduction for buildings for

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Microphones and earphones for speech communications Ingestion-build-47786 Integration of nullable value types1 Scope This standard applies to the microphone part and earphone part of handsets, headsets or earsets for speech communications, and also to the microphone units and earphone units of built in handsets, headsets or earsets. The object of this standard is to establish definitions relating to these electroacoustic transducers, and to standardize the characteristics to be specified and the relevant methods of measurement. This does not exclude the use