Microphones and earphones for speech communications Ingestion-build-264231 Non-electrical properties of the base

Non-electrical properties of the base material after the removal of the copper foil help in ensuring the flexural strength

7 * Pregnant

The competitive world in which customer expectations and behaviour evolve has changed

BS ISO 5151 specifies the test methods for determining the capacity and efficiency ratings

NOTE The transfer of potable water and the regulations to be observed are not covered by this part of ISO 15748

Microphones and earphones for speech communications Ingestion-build-264231 Non-electrical properties of the base1 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