US 6,662,156 B2Granted

Speech detection device having multiple criteria to determine end of speech

AssigneeKoninklijke Philips Electronics N.V.

InventorHeinrich Bartosik

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Abstract

A speech device for detecting a speech signal in a received signal and for determining a speech time slot, the device including a switch-on threshold detector for detecting certain detection information in relation to a threshold, and an information processing means for receiving and processing the detection information and for terminating the production of speech detection information featuring a speech time slot if the certain detection information was received during a first switch-off period, while the information processing means are arranged for additionally terminating the delivery of speech detection information if the certain detection information was not received during a second switch-off period and/or if certain detection information was received during a third switch-off period.

Claims9

Dependent claims

A speech detection device

for detecting a speech signal in a received signal and
for determining a speech time slot,
a switch-on threshold detector
for delivering first detection information when the energy content of the received signal exceeds a first energy threshold, and
including a switch-off threshold detector for delivering second detection information when the energy content of the received signal falls short of a second energy threshold, the second energy threshold being smaller than the first energy threshold, and
including information processing means for receiving and processing the first detection information and the second detection information and for terminating the delivery of speech detection information featuring a speech time slot when the second detection information was received during a first switch-off period, characterized in that the information processing means are arranged for additionally terminating the delivery of speech detection information if the first detection information was not received during a second switch-off period and/or if the first detection information was not received during a third switch-off period, whereas the beginning of the third switch-off period is determined when the second detection information is received for the first time after the first detection information had not been received.

3 more elements

A speech detection method of detecting a speech signal that has a sufficiently good signal-to-noise ratio in a received signal (MS) and for determining a speech time slot, the speech detection method comprising the following steps:

delivering first detection information when the energy content of the received signal exceeds a first energy threshold and
delivering second detection information when the energy content of the received signal falls short of a second energy threshold, the second energy threshold being smaller than the first energy threshold and
receiving and processing the first detection information and the second detection information and
terminating the delivery of speech detection information featuring a speech time slot when the second detection information was received during a first switch-off period, characterized in that the information processing means are arranged for additionally terminating the delivery of speech detection information if the first detection information was not received during a second switch-off period and/or if the first detection information was not received during a third switch-off period whereas the beginning of the third switch-off period is determined when the second detection information is received for the first time after the first detection information had not been received.

1 more element

Dependencies are inferred from the claim text.