
2-13
2—SOFTWARE
ISD-SR3000
ISD
Figure 2-38: The Interrelationship between the Word, the Number, and the Sentence
Tables
Sentence Table
CONTROL AND OPTION CODES
The list of word indices alone cannot provide the entire range of sentences that the ISD-
SR3000 processor is able to synthesize. IVS control and option codes send special instructions
to control the speech synthesis algorithm’s behavior in the processor.
For example, if the sentence should announce the time of day, the ISD-SR3000 processor
should be able to substitute the current day and time in the sentence. These control words do
not represent recorded words, rather they instruct the processor to take special actions.
2.9
The ISD-SR3000 processor functions as a state machine. It changes state either in response
to a command sent by the host controller, after execution of a command is completed, or as a
result of an internal event (e.g. memory full or power failure). The ISD-SR3000 processor states
are listed below.
THE STATE MACHINE
RESET
The ISD-SR3000 processor is initialized to this state after a full hardware reset by the RESET
signal.
Number Table
Word Table
You have
OPT_NUMBER
CONTROL_SING
NAMES
five
twenty
You have
names
names