What question did this study set out to answer?

To develop and evaluate an adaptive echo cancellation system that eliminates acoustic return signals in long-distance telephone lines without interrupting conversational transmission.

March 1, 1967Bell System Technical Journal

An Adaptive Echo Canceller

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Authors

MSM. M. SondhiDelhi Technological University

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Implication

Simulation study demonstrates adaptive echo cancellation without interrupting return signals in telephone connections, suggesting robust real-time speech transmission.

Key Points

To develop and evaluate an adaptive echo cancellation system that eliminates acoustic return signals in long-distance telephone lines without interrupting conversational transmission.
Formulated an adaptive synthesized filter governed by a feedback loop modeled by simultaneous, nonlinear, first-order differential equations.
Evaluated system performance, convergence rates, and the impact of line noise using computer simulations across multiple system configurations.
Demonstrated that the synthesized echo replica mathematically converges to zero under ideal transmission conditions.
Confirmed that the adaptive feedback mechanism tracks echo path variations during active conversations while remaining robust against noise.

Cite This Study

M. M. Sondhi (1967) studied this question.

synapsesocial.com/papers/6a08f89d2757fd3263d39148 https://doi.org/10.1002/j.1538-7305.1967.tb04231.x

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Implication

Simulation study demonstrates adaptive echo cancellation without interrupting return signals in telephone connections, suggesting robust real-time speech transmission.

An Adaptive Echo Canceller

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Member takes

Implication

Key Points

Cite This Study

An Adaptive Echo Canceller

Discussion

Member takes

Implication

Key Points

Cite This Study

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