Assistive products for voice productionDevices for assisting a person who has insufficient voice power to speak using his/her own voice. Microphones, see 22 18 33. Loudspeakers, see 22 18 36.
22 09 03
Devices that generate mechanical vibrations which resonate in the oral and nasal cavities and can be modulated by the tongue and lips in a normal manner, thereby allowing the production of speech.
22 09 06
Portable and battery-powered units or systems, with microphone and loudspeaker, for increasing the volume of a persons voice in case of insufficient voice power.