Which of the following is NOT a component of compression in hearing aids?

Compression in hearing aids is designed to manage the range of sounds the wearer encounters, ensuring that softer sounds are audible while louder sounds are kept at a comfortable level. The components of compression typically include specific settings that modulate the amplification of sound based on its intensity.

Attack and release time refers to how quickly the hearing aid reacts to changes in incoming sound levels. A fast attack time allows the device to quickly reduce amplification when faced with a loud sound, whereas a fast release time helps it restore amplification for softer sounds. These elements are critical in determining how effectively the hearing aid responds to varying sound environments.

Maximum Power Output (MPO) is another vital aspect of compression. It defines the highest level of sound output that a hearing aid can provide for a given input level. This setting is essential for ensuring that loud sounds do not exceed a safe and comfortable listening level, preventing potential damage to the wearer's hearing.

Kneepoint is significant as it indicates the level of sound intensity at which compression begins to take effect. It helps determine how sounds are manipulated within the device, ensuring that the transition from linear amplification to compressed amplification happens smoothly.

Audio Frequency Response, on the other hand, refers to how the hearing aid processes different frequencies of sound, which is