Audibility enhancement
First Claim
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1. A method of enhancing audibility of a far-end signal received at a near-end user in a telephone system by applying a gain to said far-end speech signal, the method comprising:
- determining whether a ratio between an estimated near-end speech signal level and an estimated near-end background noise level exceeds a first threshold; and
increasing said gain if said ratio exceeds said first threshold and at least one of said estimated near-end speech signal level and said estimated near-end background noise level exceeds a second and third threshold, respectively.
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Abstract
An apparatus for enhancing audibility of a far-end speech signal from a far-end user to a near-end user in a telephony system includes a near-end background noise signal level estimator (26) at the near-end user. A near-end speech signal level estimator (24) is also provided at the near-end user. A gain control logic (22) determines a gain (G) for amplification of the far-end speech signal based on both estimated speech and background noise signal levels.
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10 Claims
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1. A method of enhancing audibility of a far-end signal received at a near-end user in a telephone system by applying a gain to said far-end speech signal, the method comprising:
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determining whether a ratio between an estimated near-end speech signal level and an estimated near-end background noise level exceeds a first threshold; and increasing said gain if said ratio exceeds said first threshold and at least one of said estimated near-end speech signal level and said estimated near-end background noise level exceeds a second and third threshold, respectively. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for enhancing audibility of a far-end speech signal received at a near-end user in a telephone system by applying a gain to said far-end speech signal, including
means for determining whether a ratio between an estimated near-end speech signal level and an estimated near-end background noise level exceeds a first threshold; - and
means for increasing said gain if said ratio exceeds said first threshold and at least one of said estimated near-end speech signal level and said estimated near-end background noise level exceeds a second and third threshold, respectively. - View Dependent Claims (7, 8, 9, 10)
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Specification