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●Meaning of symbols

Classification of hearing loss

	Mild　 ＜Hearing Level ２５〜４０ dB＞
	Modarate ＜Hearing Level ４０〜７０ dB＞
	Severe　 ＜Hearing Level ７０〜９０ dB＞
	Profound　 ＜Hearing Level ９０ dB over＞

Noise suppression functions

	Ambient noise is automatically suppressed to make speech more discernible.
	Outdoor noise can discernible.
	Noise suppression and induction coil can be switched internally.

Nonlinear adjustment functions

	High-pitched sounds are automatically compressed for easier understanding.
	Middle-pitched sounds are automatically compressed for easier understanding.
	Low-pitched sounds are automatically compressed for easier understanding.
	Adjusts the intensity level at which compression starts to be activated.
	Determines compression ratioof reduce discomfort.
	Loud sounds can be adjusted to reduce discomfort.
	Determines compression ratio of output sound to input sound.
	Parameter which determines of frequency response curve
	Parameter which determines the frequency response at the low-level sound input

Output limiter functions

	Very loud sounds tar automatically suppressed in volume.
	ARC for high frequency range
	Limits output sound through a compression system.
	OPC for high frepuency range
	Unnecessarily loud sounds are reliably suppressed.
	Adjusts maximum output gain of hearing aid.
	Integrated output limiter

Tone control functions

	Low-pitched sounds or noise can be adjusted tore- duce discomfort.
	High-pitched sounds can be adjusted to reduce discomfort and prevent feedback.

Gain control functions

Gain can adjusted for optimum volume.

Induction coil (T)

	Catches signals from TV aid, tie-loop, telephone, etc. and reproduces them with the hearing aid.
	Balance of microphone input and induction coil can be adjusted.

"Either-Way" circuit

Hearing aid determines battery polarity by itself, allowing battery to be inserted in either direction.

External input

Sound from TV, video or other sources can be input directly.

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