FAQ – RSC Products & Technology

How do your Voice Recognition algorithms work? Can you send me the source code for them?
The full details of the recognition algorithms are proprietary and Sensory cannot release any information other than what is already available on the Sensory web page.

Is it possible to have more than one T2SI trigger word?
No. Only one T2SI trigger at a time is currently supported.

Can you support RS232?
There is no hardware UART (universal asynchronous receiver/transmitter) inside the RSC4x, but we have written an equivalent serial software driver to handle the same functions. The only drawback is that because it is software based, it is not possible to receive serial data simultaneously with doing recognition or synthesis output. Adding a hardware UART would overcome this limitation but increase the chip cost.

"RS232" means conforming to the RS232 voltage standards (1= -12V, 0= +12V). Technically the RSC4x has TTL level (1= +3V, 0= 0V) serial transfer, not true RS232. An separate RS232 converter chip, like the MAX232 is commonly used by Sensory customers to create a true RS232 compatible circuit.

Where can I purchase a Voice Extreme Toolkit or Voice Direct Toolkit?
These products are obsolete and no longer available.

I am working on a Senior Design Project, do you donate materials to students?
We apologize, but at this time Sensory does not have a sponsorship program nor do we donate materials for educational purposes.

In our program we want to use the idle with audio wakeup mode with a trigger word, that we also want to recognize immediately after changing into active mode.
There is a sample program which shows how to use the audio wakeup feature. Look in the \asamples\pwrdown folder. There is also a C language equivalent. Only a whistle, hand clap or loud noise can wake the RSC chip from the idle with audio wakeup mode. It is not possible to attempt recognition on the same word used for wakeup.

I am trying to write a program to recognize the digits 0-9, or the letters A-Z, but it is not working.
Can you help me?
The English Language digits 0-9 and letters A-Z are notoriously difficult to recognize. They are all short duration, often monosyllabic, words that sound similar to each other. Sensory is constantly working on improving and perfecting our voice recognition algorithms.