Low complexity tone/voice discrimination method using a rising edge of a frequency power envelope
AssigneeIntel Corporation
InventorsDariusz Dzik, Bahman Barazesh
Life of this patent
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Abstract
An apparatus comprising a decision circuit, a detector circuit and a processing circuit. The decision circuit may be configured to generate a confirmation signal in response to a first lock signal and a second lock signal. The detector circuit may be configured to generate the first lock signal in response to a filtered version of an input signal being above a threshold. The processing circuit may be configured to generate the second lock signal in response to a power signal received from the detector circuit. The processing circuit generates the second lock signal by analyzing the rising edge of a frequency power envelope of the power signal.
Claims20
A tone detection apparatus, comprising one or more integrated circuit to:
- receive an input signal and generate a power signal indicative of the input signal;
- generate a lock signal indicative of a rising edge of a frequency power envelope of the power signal;
- and
- generate a tone confirmation signal based on at least the lock signal.
A method for detecting a tone, the method comprising:
- receiving an input signal and generate a power signal indicative of the input signal;
- generating a lock signal indicative of a rising edge of a frequency power envelope of the power signal;
- and
- generating a tone confirmation signal based on at least the lock signal.
A tone detection apparatus, comprising one or more integrated circuit to:
- receive an input signal and generate a power signal indicative of the input signal;
- generate a lock signal indicative of a rising edge of a frequency power envelope of the power signal;
- generate an additional lock signal in response to a filtered version of the input signal being above a predetermined power threshold;
- and
- generate the tone confirmation signal based on both the lock signal and the additional lock signal.
Dependencies are inferred from the claim text.