| 摘要 |
A speech signal transmission system which prevents influences of errors from propagating even after consecutive frame losses and requires no additional transmission delay. In this system, frame class information FI indicates that processing by Dec2 is carried out, and therefore a frame erasure concealment processing section (410) generates a first decoded signal Sf. Next, the internal state of a normal decoding processing section (409) is reset and a parameter storage section 414 stores first coding information F. Next, the normal decoding processing section (409) generates a second decoded signal So using second coding information f. Next, windowing sections (411,412) and an adder (413) carry out superimposed addition processing as shown in Expression (1) to generate a final output signal S.
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