Speech Processing

Question 1

List the ABs sound processing strategies.

Answer 1

CI
   CIS
   MPS
   SAS
CII and 90K
HiRes
Fidelity 120
Clear Voice
HiRes Optima

Question 2

Why can we call ourselves Industry-Leading Innovators in Sound Processing?

Answer 2

HiRes Optima/Fideltiy 120
ClearVoice
Binaural VoiceStream Technology
AutoSound

Question 3

Which sound processing strategies are “Paired Stimulation”?

Answer 3

HiRes-P
HiRes-P with Fidelity 120
HiRes-P Optima
MPS

Question 4

Which sound processing strategy is “Sequential Stimulation”?

Answer 4

HiRes-S
HiRes-S with High Fidelity 120
HiRes-S Optima
CIS

Question 5

What are the parameters of sound?

Answer 5

Temporal (Time)
Spectral (Frequency)
Intensity (Amplitude)

Question 6

What is AutoSound

Answer 6

“Set it and Forget it.”
IDR and AGC working together
Makes adjustments to soft sounds to be audible and loud sounds to be comfortable.

Question 7

What is HiResolution?

Answer 7

It preserves the clarity of sound need for hearing in noise and music. It does so by preserving the fine structures of sound. We can do this because of our ability for fast stimulation rates.

Question 8

What is ClearVoice?

Answer 8

Breakthrough sound processing that improves speech understanding in noise while maintaining the same performance in quiet.

Question 9

What makes AB unique and what we consider the World’s Best Hearing Performance or the AB Advantage?

Answer 9

TMic
AutoSound
HiResolution sound processing
ClearVoice

Question 10

How does HiRes Fidelity 120 work?

Answer 10

Current Steering

Question 11

How does current steering work?

Answer 11

Multiple current sources. Designed to deliver added spectral info between adjacent pairs of electrodes through accurately weighted simultaneous stimulation.

Question 12

What are the benefits of ClearVoice?

Answer 12

Provides improved speech understanding in noise
Enhances lyrics for music
Provides the same great performance in quiet
Allows for listening in dynamic environments without the need for a program or processor adjustment.

Question 13

What is AB’s goal for sound processing?

Answer 13

To faithfully represent the characteristic of the incoming acoustic signal to the listener.

Question 14

Describe the difference between sampling rate and stimulation rate?

Answer 14

Sampling rate is the front-end design that ensures accurate capture of the acoustic environment. The stimulation rate is the detailed delivery of information to the nerve.

Question 15

Real-world sounds includes….

Answer 15

Envelope information (overal amplitude) and fine structure information (frequency and phase).
these parameters are constantly changing

Question 16

Why is temporal information important?

Answer 16

Provides envelope information, periodicity information and fine structure information.

Question 17

What does envelope information perceptually correlate to?

Answer 17

Prosody and intonation

Question 18

What does periodicity information perceptually correlate to?

Answer 18

Segmental (manner, voicing, vowel, intonation and stress

Question 19

What does fine structue information percepttually correlate to?

Answer 19

segmental (manner, voicing and place of artic), fast changes in amplitude mark consonants from non-consonants

Question 20

How does AB help each patient achieve his/her maximum potential?

Answer 20

By working to take away the limitations of technology.

Question 21

What acoustic characteristics of sound relate to speech and music

Answer 21

The envelope of sound for speech and the fine structure of sound for music.

Question 22

Which is a faster stimulation mode? Paired or Sequential

Answer 22

Paired

Question 23

How does HiResolution processing preserve envelope and fine timing cues?

Answer 23

5,200 Hz sampling and 83,000pps stimulation rate

Question 24

Intensity is influenced by how sound is captured AND how sound is processed by the implant system. What two features provided by AB helps us hear?

Answer 24

TMicand AGC

Question 25

How does AGCII work? What is a technical name for AGC II?

Answer 25

Computes simultaneous short term and long term (or a fast loop and slow sloop) estimates of the incoming sound. This allows for the application of more gain to softer sounds (slow loop) to maintain audibility and compression to maintain comfort for louder sounds (fast loop). Cambridge Dual-Loop AGC

Question 26

How does IDR function?

Answer 26

it determines how muchof the sound captured by the processopr is mapped into the recipients electrical dynamic range (EDR).

Question 27

What is EDR?

Answer 27

Electrical Dynamic Range-the range between the programmed thresholds and comfort levels (T's and M's) Range is between 20 to 80 dB

Question 28

What is the IDR for normal hearing?

Answer 28

100 dB

Question 29

Spectral resolution for speech is ______, whereas the resolution for music is ________.

Answer 29

Ellipses | Points

Question 30

List features/functions of Fidelilty 120

Answer 30

Works because we have multiple independent current sources. adds increased spectral information Aids with hearing in the real world of sound: hearing in noise, music, environmental sounds, tonal languages Beyond physical electrode contacts Targeted stimulation at mulitiple locations between each physical electrode contact

Question 31

Why was HiRes Optima created?

Answer 31

Better battery life | New compliance voltage (4 V)

Question 32

How does current steering change with HiRes Optima?

Answer 32

Stimulation is delievered only between the physical electrodes Got rid of 100% stimulation on one or two electrodes.

Question 33

How does ClearVoice work?

Answer 33

It is a pre-processing strategy. It identifies channels in which unwanted sound is present and attenuates transmission in those channels to enhance the SNR There is a scene analyzer working associated

Question 34

What two types of noise are there?

Answer 34

Steady state (stationary) and time-varying (modulated)

Question 35

What is the attenuation for each ClearVoice setting?

Answer 35

Low-6 dB Medium-12 dB High- 18 dB

Question 36

Why should recipients try ClearVoice?

Answer 36

Significantly improves speech understanding in steady-state noise and multi-talker babble Same great performance in quiet Determined to be preferred by most subjects for everyday listening (93%) Almost all subjects benefitted from ClearVoice (98%) All subjects would like and would use ClearVoice!

Question 37

What was the average battery life improvement with Optima?

Answer 37

53% | Range of 25% to 109%