Exam Preview for 16933: Compression Made Easy: Back to Basics Tue,

Compression Made Easy: Back to Basics

Please note: exam questions are subject to change.

1. Dynamic Range, relative to hearing, is defined as the difference between MCL and UCL the PTA plus 20 the difference between threshold and UCL a marketing term
2. A linear hearing aid applies equal gain to all inputs may over amplify loud sounds may under amplify soft sounds All of the above
3. Compression Ratio describes the relationship between the input and output of the hearing instrument is expressed as X:1 defines the point where compression begins tells us the maximum output of the hearing instrument A and B
4. Expansion is the same as compression is the opposite of compression makes soft sounds louder makes soft sounds softer B and C
5. Compression limiting keeps loud sounds from being too loud defines the amount of gain average speech will receive sets the maximum output of the hearing instrument A and C All of the above
6. Examples of linear fitting formulas are POGO Berger NAL-R A and B All of the above
7. In the Inspire Software, to adjust dynamic range compression, you can go to Compression MPO on Fine Tuning Memories Soft/Loud gain on Fine Tuning A and D
8. In Inspire, if a hearing aid is linear the ratios in the compression screen will be 1.0 the kneepoints will be set to the highest value the Gain for Loud is turned all the way up A and B All of the above
9. To set a hearing aid as linearly as possible compression ratios should be 1.0 Quiet Acoustic Landscape should be off MPO should be set to maximum A and B All of the above
10. Adjusting "Gain for Soft" increases the gain for inputs around 50 dB will increase the compression ratio raises the knee point A and C A and B