| 摘要 |
<p>The transmission system comprises a transmitter for transmitting a sub-band encoded signal accommodated in a second digital signal (Fig. 2) containing frames which include allocation information, scale factor information and samples. At a transmitter end an additional coding of the second digital signal is performed as a result of which an error correction (in 32) of the information received becomes possible at the receiver end. The receiver further includes error masking means (43) with which it is possible to perform a operation on the received information if an error in the received information cannot be corrected. The error masking means has a very simple structure and a. in response to an error flag of the error correction means (32) denoting that there is an error in a sample, realises a zeroing of this sample; b. in response to an error flag denoting that the scale factor in a frame is erroneous, realises a reiteration of the corresponding scale factor from the preceding frame; c. in response to an error flag denoting that the allocation information is erroneous, realises a reiteration of the preceding frame and if, furthermore, an error flag is generated, denoting that the allocation information of the successive frame is erroneous, realises a zeroing of all the samples in this successive frame. <IMAGE></p> |
