Enhancing the intelligibility of received speech in a noisy environment
First Claim
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1. A method comprising:
- determining at a local device a level of ambient noise at the local device;
computing at the local device a dynamic range compression (DRC) gain based on the level of ambient noise at the local device;
computing at the local device an additional gain factor;
computing at the local device a total gain based on an adding of the DRC gain and the additional gain factor; and
adjusting at the local device an amplitude of an audio signal based on the total gain, wherein the audio signal was transmitted from a remote device and received by the local device.
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Abstract
A level of ambient noise at a local device is determined. A dynamic range compression (DRC) gain is computed based on the level of ambient noise at the local device. An additional gain factor is computed. A total gain is computed based on an adding of the DRC gain and the additional gain factor. An amplitude of an audio signal is adjusted based on the total gain, wherein the audio signal was transmitted from a remote device and received by the local device.
29 Citations
20 Claims
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1. A method comprising:
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determining at a local device a level of ambient noise at the local device; computing at the local device a dynamic range compression (DRC) gain based on the level of ambient noise at the local device; computing at the local device an additional gain factor; computing at the local device a total gain based on an adding of the DRC gain and the additional gain factor; and adjusting at the local device an amplitude of an audio signal based on the total gain, wherein the audio signal was transmitted from a remote device and received by the local device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An audio signal processor comprising:
a gain calculation unit configured to calculate a total gain to be applied to an audio signal, wherein the gain calculation unit is configured to; determine a level of ambient noise at a local device, compute a dynamic range compression (DRC) gain based on the level of ambient noise at the local device, compute an additional gain factor, and compute a total gain based on an adding of the DRC gain and the additional gain factor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus, comprising:
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a microphone; a speaker; a codec coupled to the microphone and to the speaker; an encoder to encode a signal for transmission; a decoder to decode a signal transmitted from a remote device and received by the handheld telephone and to generate an audio signal; a gain calculation unit configured to calculate a total gain to be applied to the audio signal, wherein the gain calculation unit is configured to; determine a level of ambient noise at a local device, compute a dynamic range compression (DRC) gain based on the level of ambient noise at the local device, compute an additional gain factor, and compute a total gain based on an adding of the DRC gain and the additional gain factor; and a gain controller configured to adjust an amplitude of the audio signal based on the total gain.
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Specification