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Echo cancellation/suppression and double-talk detection in...

Telephonic communications – Echo cancellation or suppression – Using digital signal processing
Reexamination Certificate

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Echo canceller

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Echo canceller

Telephonic communications – Echo cancellation or suppression – Using digital signal processing
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Echo canceller

Telephonic communications – Echo cancellation or suppression – Residual echo cancellation
Reexamination Certificate

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Echo canceller

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Echo canceller

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Echo canceller

Telephonic communications – Echo cancellation or suppression – Residual echo cancellation
Reexamination Certificate

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Echo canceller

Telephonic communications – Echo cancellation or suppression – Using digital signal processing
Reexamination Certificate

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Echo canceller

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Echo canceller

Telephonic communications – Echo cancellation or suppression – Using digital signal processing
Reexamination Certificate

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Echo canceller

Telephonic communications – Echo cancellation or suppression
Patent

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Echo canceller and echo cancelling method

Telephonic communications – Echo cancellation or suppression – Combined diverse function
Reexamination Certificate

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Echo canceller and method of echo cancellation using an NLMS...

Telephonic communications – Echo cancellation or suppression – Residual echo cancellation
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Echo canceller employing dual-H architecture having improved...

Telephonic communications – Echo cancellation or suppression – Using digital signal processing
Reexamination Certificate

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Echo canceller employing dual-H architecture having improved...

Telephonic communications – Echo cancellation or suppression – Residual echo cancellation
Reexamination Certificate

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Echo canceller employing dual-H architecture having improved...

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Echo canceller employing dual-H architecture having improved...

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Echo canceller employing dual-H architecture having improved...

Telephonic communications – Echo cancellation or suppression – Residual echo cancellation
Reexamination Certificate

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Echo canceller employing dual-H architecture having split...

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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Echo canceller employing dual-H architecture having split...

Telephonic communications – Echo cancellation or suppression
Reexamination Certificate

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