Acoustic Feedback

The phase can be understood as:

• The horizontal position of a waveform with respect to two cycles.

• The vertical position of a waveform with respect to one cycle.​

• The horizontal position of a waveform with respect to one cycle.

• The parallel position of a waveform with respect to one cycle.​

Sine waves that are perfectly aligned peak to peak are called

 

One of these is NOT a cause for external feedback:

• Poor earmold fit

• Ear canal orientation

• Internal components touching

• Vent diameter

 

Acoustic feedback occurs when the _______, amplified by the hearing aid, escapes the ear and is picked up at the hearing aid ________. The hearing aid amplifies that escaping signal, which again escapes and is ________.

• sound, receiver, amplified

• signal, microphone, reamplified

• hearing aid, earmold, cancel out

• signal, receiver, amplified

What are your thoughts about the presentation?

• It was interesting

• I learn new things

• It would be useful for clinic placement

• It was well developed