Speech reproduction device configured for masking reproduced speech in a masked speech zone
First Claim
1. A speech reproduction device for reproducing speech based on a received speech signal so that the reproduced speech is intelligible in a clear speech zone and unintelligible in a masked speech zone, the speech reproduction device comprising:
- an audio processing module configured for receiving the speech signal;
a set of speech loudspeakers configured for reproducing the speech based on one or more speech loudspeaker signals; and
a set of masking sound loudspeakers configured for producing a masking sound based on one or more masking sound loudspeaker signals, wherein the masking sound masks the speech in the masked speech zone;
wherein the audio processing module comprises a speech loudspeaker signal producer configured for producing the one or more speech loudspeaker signals based on the speech signal;
wherein the audio processing module comprises a speech signal analysis module configured for producing one or more analysis signals based on spectral and/or temporal characteristics of the speech signal;
wherein the audio processing module comprises a masking sound generator configured for producing one or more masking sound signals based on the one or more analysis signals; and
wherein the audio processing module comprises a masking sound loudspeaker signal producer configured for producing the one or more masking sound loudspeaker signals based on the one or more masking sound signals.
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Accused Products
Abstract
A speech reproduction device for reproducing speech based on a received speech signal so that the reproduced speech is intelligible in a clear speech zone and unintelligible in a masked speech zone includes an audio processing module configured for receiving the speech signal; a set of speech loudspeakers configured for reproducing the speech based on one or more speech loudspeaker signals; and a set of masking sound loudspeakers configured for producing a masking sound based on one or more masking sound loudspeaker signals, wherein the masking sound masks the speech in the masked speech zone; wherein the audio processing module includes a speech signal analysis module configured for producing one or more analysis signals based on spectral and/or temporal characteristics of the speech signal; wherein the audio processing module includes a masking sound generator configured for producing one or more masking sound signals based on the one or more analysis signals.
12 Citations
24 Claims
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1. A speech reproduction device for reproducing speech based on a received speech signal so that the reproduced speech is intelligible in a clear speech zone and unintelligible in a masked speech zone, the speech reproduction device comprising:
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an audio processing module configured for receiving the speech signal; a set of speech loudspeakers configured for reproducing the speech based on one or more speech loudspeaker signals; and a set of masking sound loudspeakers configured for producing a masking sound based on one or more masking sound loudspeaker signals, wherein the masking sound masks the speech in the masked speech zone; wherein the audio processing module comprises a speech loudspeaker signal producer configured for producing the one or more speech loudspeaker signals based on the speech signal; wherein the audio processing module comprises a speech signal analysis module configured for producing one or more analysis signals based on spectral and/or temporal characteristics of the speech signal; wherein the audio processing module comprises a masking sound generator configured for producing one or more masking sound signals based on the one or more analysis signals; and wherein the audio processing module comprises a masking sound loudspeaker signal producer configured for producing the one or more masking sound loudspeaker signals based on the one or more masking sound signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 22)
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20. A method for reproducing speech based on a received speech signal so that the reproduced speech is intelligible in a clear speech zone and unintelligible in a masked speech zone, the method comprising:
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receiving the speech signal using an audio processing module; reproducing the speech based on one or more speech loudspeaker signals using a set of speech loudspeakers; producing a masking sound based on one or more masking sound loudspeaker signals using a set of masking sound loudspeakers, wherein the masking sound masks the speech in the masked speech zone; producing the one or more speech loudspeaker signals based on the speech signal using a speech loudspeaker signal producer of the audio processing module; producing one or more analysis signals based on spectral and/or temporal characteristics of the speech signal using a speech signal analysis module of the audio processing module; producing one or more masking sound signals based on the one or more analysis signals using a masking sound generator of the audio processing module; and producing the one or more masking sound loudspeaker signals based on the one or more masking sound signals using a masking sound loudspeaker signal producer of the audio processing module. - View Dependent Claims (23)
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21. A non-transitory digital storage medium having a computer program stored thereon to perform the method for reproducing speech based on a received speech signal so that the reproduced speech is intelligible in a clear speech zone and unintelligible in a masked speech zone, the method comprising:
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receiving the speech signal using an audio processing module; reproducing the speech based on one or more speech loudspeaker signals using a set of speech loudspeakers; producing a masking sound based on one or more masking sound loudspeaker signals using a set of masking sound loudspeakers, wherein the masking sound masks the speech in the masked speech zone; producing the one or more speech loudspeaker signals based on the speech signal using a speech loudspeaker signal producer of the audio processing module; producing one or more analysis signals based on spectral and/or temporal characteristics of the speech signal using a speech signal analysis module of the audio processing module; producing one or more masking sound signals based on the one or more analysis signals using a masking sound generator of the audio processing module; and producing the one or more masking sound loudspeaker signals based on the one or more masking sound signals using a masking sound loudspeaker signal producer of the audio processing module, when said computer program is run by a computer. - View Dependent Claims (24)
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Specification