| 摘要 |
The invention relates to a device for shaping a signal, notably a speech signal that occupies a certain frequency band and is attenuated at least on a low part of this frequency band. The invention comprises regenerating the low part of the frequency band by filtering, the filter to be used being determined on the basis of the signal to be regenerated, for example, by applying a vector quantizer selection method. Applications: receivers of telephony transmission systems which utilize a narrow band lying between 300 Hz and 3400 Hz; audio apparatus that may be subject to an acoustic loss, for example, high impedance loudspeakers.
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