Speech reproduction device configured for masking reproduced speech in a masked speech zone

摘要

The invention relates to 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 system 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 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.