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US 7,925,499 B2Granted
Method and apparatus for processing a speech signal
AssigneeAvaya Inc.
InventorKenneth Lee Thomas
Life of this patent
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Abstract
A method and apparatus for generating a control signal for processing a speech signal comprising the steps of: adjusting the signal relative to a threshold level; and responsive to detection of a falling edge of the signal, holding the signal level for a holding period. The technique further comprises ‘slowing’ each rising edge of the signal. The technique further comprises attenuating each falling edge of the signal. The steps are carried out on a signal representing the envelope of the speech signal.
Claims12
A method comprising:
- generating, with a control block, a control signal based on an input signal that comprises a transient segment and a speech segment by:
- (a) reducing an amplitude of the control signal by a threshold amount whenever the amplitude of the input signal exceeds the threshold amount;
- and
- (b) when a falling edge of the speech segment of the input signal is detected, holding the control signal level for a holding period;
- and
- amplifying, with an amplifier, the input signal to generate an output signal, wherein the amplification of the input signal is controlled by the control signal.
3 more elements
A method comprising:
- receiving an input signal that comprises:
- (i) a transient segment and
- (ii) a speech segment;
- and
- generating an output signal based on the input signal by:
- (a) reducing an amplitude of the output signal by a threshold amount whenever the amplitude of the input signal exceeds the threshold amount;
- and
- (b) when a falling edge of speech segment of the input signal is detected, holding the output signal level for a holding period;
- and
- wherein the output is provided to at least one of a switch or a teleconferencing system.
7 more elements
Dependencies are inferred from the claim text.