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GB0511161D0
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Phase difference calculator
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GB0511159D0
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Echo delay detector
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GB0511165D0
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Discriminator for echo canceller using far-end signal
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GB0511162D0
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Subband coefficient adaptor for adaptive filter
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GB0511164D0
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Double talk and echo path change discriminator for echo canceller
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GB0511163D0
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Correlator for signal or noise classification
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GB0204077D0
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Echo delay detector
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GB0204057D0
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Echo detector having correlator with preprocessing
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GB0202580D0
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Phase difference calculator
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GB0201413D0
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Subband coefficient adaptor for adaptive filter
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GB0129217D0
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Narrowband detector
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GB0127048D0
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Correlator for signal or noise classification
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GB0125386D0
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Discriminator for echo canceller using far-end signal
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GB0125387D0
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Discriminator for echo canceller
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