System and method for modifying speech signals

   
   

A system and method for speech signal enhancement upsamples a narrowband speech signal at a receiver to generate a wideband speech signal. The lower frequency range of the wideband speech signal is reproduced using the received narrowband speech signal. The received narrowband speech signal is analyzed to determine its formants and pitch information. The upper frequency range of the wideband speech signal is synthesized using information derived from the received narrowband speech signal.

Un sistema y un método para los upsamples del realce de la señal de discurso una señal de discurso de banda estrecha en un receptor de generar una señal de discurso wideband. La gama de una frecuencia más baja de la señal de discurso wideband se reproduce usando la señal de discurso de banda estrecha recibida. Se analiza la señal de discurso de banda estrecha recibida para determinar sus formants y de echar la información. La gama de frecuencia superior de la señal de discurso wideband se sintetiza usando la información derivada de la señal de discurso de banda estrecha recibida.

 
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