Speech to DTMF generation

Data processing: speech signal processing – linguistics – language – Speech signal processing – Application

Reexamination Certificate

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C704S251000

Reexamination Certificate

active

08050928

ABSTRACT:
A method of speech to DTMF generation involving ASR-enabled and DTMF-controlled communications systems. The ASR-enabled system is used to recognize speech received from the DTMF-controlled telecommunications system using sampling rate independent speech recognition. It then identifies a speech segment contained in the speech received from the DTMF-controlled system that corresponds with at least one keyword associated with user-defined data. Then, the ASR-enabled system transmits at least one DTMF signal to the DTMF-controlled system in response to the identified speech segment. This allows a user of an ASR-enabled system such as a vehicle telematics unit to at least partially automate access to the DTMF-controlled system using the telematics unit, so that voice mailbox numbers, passwords, and the like normally entered via a telephone keypad can be automatically sent to the DTMF-controlled system from the telematics unit without having to be manually input each time by the user.

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patent: 7711570 (2010-05-01), Galanes et al.
patent: 2005/0216268 (2005-09-01), Kannappan

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