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TIA-5050
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TIA-5050 2018 Edition, January 17, 2018 Telecommunications Communications Products Receive Volume Control Requirements for Wireless (Mobile) Devices
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Description / Abstract:
This Standard establishes receive volume control requirements and testing methods for wireless handset telephones that support narrowband and/or wideband audio interfaces for individuals without hearing loss and for individuals with hearing loss who may or may not use a hearing device.
The methods in this standard use conversational gain, which, in summary, is the measure of the acoustic output level of speech from a device relative to the acoustic level that would be present in a face-to-face conversation with two people 1 meter apart.
NOTE: Other acoustic receive features may be available such as additional amplification, tone control, automatic gain control, etc. ANSI/TIA-4953-B contains performance requirements for output levels and tone control operation for high gain amplified devices for individuals with hearing loss.
The methods in this standard use conversational gain, which, in summary, is the measure of the acoustic output level of speech from a device relative to the acoustic level that would be present in a face-to-face conversation with two people 1 meter apart.
NOTE: Other acoustic receive features may be available such as additional amplification, tone control, automatic gain control, etc. ANSI/TIA-4953-B contains performance requirements for output levels and tone control operation for high gain amplified devices for individuals with hearing loss.