Voice activity detection speech coding to accommodate music signals

A signal processor that performs correction and supervision of a voice activity detection decision, the signal processor comprising:

• an encoder circuitry that analyzes a signal, the encoder circuitry also performs forward linear prediction coding and backward linear prediction coding on the signal;
• the signal processor computes a plurality of parameters corresponding to the signal, the plurality of parameters comprising a pitch parameter, a spectral difference parameter, and a background noise energy parameter, the signal processor also statistically analyzes the plurality of parameters corresponding to the signal and compares the statistical analysis of the plurality of parameters corresponding to the signal to at least one predetermined threshold, the at least one predetermined threshold is stored in the encoder circuitry;
• and
• the signal processor overrides a voice activity detection decision when the statistical analysis of the plurality of parameters meets the at least one predetermined threshold.

A method that performs correction and supervision of a voice activity detection decision, the method comprising:

• analyzing a signal;
• performing forward linear prediction coding and backward linear prediction coding on the signal;
• computing a plurality of parameters corresponding to the signal, the plurality of parameters comprising a pitch parameter, a spectral difference parameter, and a background noise energy parameter;
• statistically analyzing the plurality of parameters corresponding to the signal;
• comparing the statistical analysis of the plurality of parameters corresponding to the signal to at least one predetermined threshold;
• and
• overriding a voice activity detection decision when the statistical analysis of the plurality of parameters meets the at least one predetermined threshold.

A signal processor that performs correction and supervision of a voice activity detection decision that is made on a signal, the signal processor comprising:

• a signal processor that analyzes a signal, the signal having a plurality of frames, the signal processor generates a voice activity detection decision upon analysis of the signal;
• the signal processor performs statistical analysis using a predetermined number of frames of the signal, the predetermined number of frames of the signal are selected from the plurality of frames of the signal;
• the signal processor updates at least one running, mean upon performing the statistical analysis of the predetermined number of frames of the signal using at least one characteristic corresponding to the signal;
• and
• a voice activity detection correction and supervision circuitry that overrides a voice activity detection decision when the statistical analysis of the plurality of parameters meets at least one predetermined threshold.