CCivr
How to modify or add a key word
Please note:
This brochure is meant only for applications
that uses so called “Select From Menu”
building blocks and
not more than about 1000 key words to
distinguish the offered services!
The system CCivr supplies as an additional option
speaker independent voice recognition not only by
means of key words but also by means of
‘Natural Language Understanding (NLU)’.
In the first case the selection between the offered
criterion is done by speaking the key word (typical
application are e.g.: information systems) whereas
in the second case the caller can answer more
natural and the required information is extracted
from his answer (a possible application could be in
ordering system for articles, flights, etc.).
Contents:
& How to modify a key word
& How to add or delete a key word
& How to adjust the speech recognition
How to modify a key word
A key word is a term which the caller of your application can use to request information e.g. about special
offers on different travel destinations.
If e.g. the destination changes from ‘Oversea’ to ‘USA’ it is necessary to change the key word too.
1. Click the Application icon
.
2. Select SIR Context in the drop-down list box ‘Components’.
3. Select the language in the field ‘Language’.
4. Select the n ame of the application
in the drop-down list box ‘Application’.
What you need to know:
- Name and language of your application.
- The name of the dialog step (represents the
associated building block) where the key word should
be recognized.
What can you see in the “Tree View” window?
Each indent represents a separate level.
The highest level is the type of the building block (Select
from menu)
then follows the dialog step name ,
the alternatives (branches of the building block),
the keyword(s) per alternative and
finally the pronunciation per keyword (if defined).
5. Click the key word to be changed.
6. Click on Modify.
7. Enter the new word in the field
‘Modify Word and Actions’.
8. Click OK.
If you want to define the pronunciation
8a Double click ‘sounds like’
8b Click Add
8c Activate the option “Sounds like” and enter
the pronunciation in phonetic transcription.
9. Click Apply to accept your modifications.
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CCivr
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How to modify or add a key word
How to add or delete a key word
If you e.g. want to supply some information on special offers for ‘USA’ together with those for ‘Oversea’ it
might become necessary to add a key word. Or if you do not longer want to supply offers for other
destinations like ‘Africa and Asia’ within the same branch you must delete the corresponding key word.
1. Click the Application icon
.
2. Select SIR Context in the drop-down list box ‘Components’.
3. Select the language in the field ‘Language’.
4. Select the name of the application in the drop-down list box ‘Application’.
Deleting a key word:
Adding a key word:
5. Click the alternative for that you want to
add an other key word.
5. Click the key word to be deleted.
6. Click on Add and e nter the new word in
the field ‘Add new word’.
6. Click on Delete.
7. Click OK.
7. Click Apply to accept your changes.
8. Click Apply to accept your changes.
Copy To
Please note:
If the word being added has to be pronounced in a
special way you can select the option ‘Sounds like’ and
enter there the correct pronunciation.
How to modify or add a key word
!
CCivr
!
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How to adjust the speech recognition
This section should be consulted only if, in rare cases, the speech recognition of your application
became insufficient after adding or changing a key word and you had no success with the option
‘Sounds Like’ or ‘Phonetic Input’. Probably because the key word is a foreign word. Before modifying
the below described parameters note them down for recovery.
1. Click the Application - icon
.
2. Select SIR Parameter in the drop-down list box ‘Components’.
3. Select the name of your application in the drop-down list box ‘Application’.
4. Select the language in the drop-down list box ‘Language’.
5. Select the name of the dialog step in the drop-dow list box ‘Dialog Step’ where the key word
should be recognized.
Please note:
The changes affects the complete
building block with this dialog step
name and not only the one key word
making troubles!
Suggested order of modifying
the relevant parameters:
Acceptance
Accuracy
Sensitivity
Rejection
(~ 40)
(100 - 400)
(~ 26 dB)
(~ 70)
6. Clear the check box ‘Reference’.
7. Adjust the parameters individually.
The relevant parameters are:
Acceptance: Threshold for the recognition probability of the word . Each recognized word has a calculated
probability that it is the right word. This value is compared with the value set as acceptance parameter. If this
calculated value is higher, the recognition is accepted.
Accuracy: Specifies how many possibilities at the same time should be considered during the recognition
process. This parameter should be handled with care because it influences directly the CPU load and memory
consumption.
Sensitivity: Threshold for the minimum energy level of the recognized word. If the value is to low a noisy line
may cause recognitions. Do not touch this parameter for key word manipulations..
Rejection: Threshold for the rejection of other words, except the key word, in a spoken context.
8. Click Apply.
Alcatel Austria
Voice Processing Center
Rel.4.1 3BR 05774 ENAA Ausg.01
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CCivr
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How to modify or add a key word