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Sound Field wireless amplification systems are intended for use as group auditory trainers used to communicate simultaneously with one or more listeners with normal hearing or hearing impairments. The device is used with an associated transmitter microphone and speaker systems and does not provide coupling to the ear through either earphones or earmolds. These systems use FM and/or infrared wireless technology which include receivers, transmitters, and strategic placement of high quality speaker systems and can be used with or without BTF hearing aids and/or personal FM devices. The talker's voice with or which bI E throughout the room to assist listeners, regardless of seating location, to consistently hear what the talker is saying.

Sound Field group amplification systems consist of FM or IR transmitters and microphone used by a speaker/instructor to send auditory signals to FM or IR receiver/amplifier which noreesses the voice signals and broadcast the signals through one or more loudspeakers. These systems are generally installed under the guidance of an audiologist or a sound contractor. Sound Field systems consist of an on/off switch and volume controls. Specifications and user guider in cre provided for Sound Field installation and use. Sound Field systems are assembled from standard electronic components widely used by Group Hearing Aid and Group Auditory Trainer manufacturers. Sound Field wireless ampification systems amplify and broadcast the speaker/instructor's voice through strategically-mnounted.will and/or ceiling loud speakers placed throughout the listening area to distribute the final moder want signal (sound) of the speaker/instructor and are not directly connected or coupled to the piroener. Sound Field wireless amplification systems are intended for use as group auditory trainers used to communicate simultaneously with one or more listeners with normal hearing on he aring impairments. The device is used with an associated transmitter microphone and speakers systems and does not provide coupling to the ear through either earphones or earmolds. These systems use FM and/or infrared wireless technology which include receivers, transmitters, and strategic placement of high quality speaker systems and can be used with or without BTE hearing aids and/or personal FM devices. The talker's voice is mildly amplified and dispersed throughout the room to assist listeners, regardless of seating location, to consistently bear what the talker is saying.

The indications for use of the assistive listening device in this submission is to amplify sound for individuals with impaired hearing. The device is indicated for individuals with hearing loss in the following category(ies). (Check appropriate space(s)): Severity: Slight, Mild, Moderate. Configuration: Gradually Sloping, Flat. Specific Indications: FOR IMPROVED SIGNAL TO NOISE RATIO THROUGH PLACEMENT OF A REMOTE MICROPHONE NEAR A DESIRED SOUND SOURCE. SEVERE TO PROFOUND LOSS - USED IN CONJUNCTION WITH PERSONAL HEARING AID VIA TELECOIL OR DIRECT AUDIO INPUT. To improve the signal to noise ratio for a listener in a variety of environments where background noise, poor acoustics, and distance from a desired sound source contribute to hearing difficulty. Any hearing and speech condition that can be improved by maximizing the signal to noise ratio for the listener. This includes: Low gain amplification for Attention Deficit Disorders, Learning Disabilities, Central Auditory Processing Disorders, amplification for mild to moderate conductive and sensorineural hearing loss, and amplification moderate to severe conductive and sensorineural hearing loss when used in conjunction with a personal hearing aid.

HEARING HELPER PERSONAL FM SYSTEM Models PFM300 & PFM 358. WILLIAMS SOUND, HEARING HELPER PERSONAL FM SYSTEM, Model PFM 300 / PFM 350.

To assist in conversation, meetings and TV-listening by amplifying sound. The indications for use of the assistive listening device in this submission is to amplify-sound for individuals with impaired-hearing. The device is indicated for individuals with hearing loss in the following category(ies). Severity: Mild, Moderate Configuration: Gradually Sloping, Flat

Air Conduction Assistive Listening Device. Personal Amplifier. Features: Adjustable volume control, Microphone/Telephone/Off switch, Gain, Treble and AGC adjustment trimmers, Internal/External microphone switch. Assembly: Assembled from standard components widely used in electronic products. Technical Characteristics: Technical specifications comply with ANSI S3.22-1987. Controls: Volume control, Microphone/Telephone/Off switch, Internal/External microphone switch and sound adjustment trimmers similar to those used on other assistive listening devices/Personal amplifiers. Power: Standard alkaline AAA (or LR03) size battery.