Method for error concealment in the transmission of speech data with errors
AssigneeRobert Bosch GmbH
InventorsPeter Vary, Frank Mertz
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for outputting a speech signal. Speech signal frames are received and are used in a predetermined sequence in order to produce a speech signal to be output. If one speech signal frame to be received is not received, then a substitute speech signal frame is used in its place, which is produced as a function of a previously received speech signal frame. According to the invention, in the situation in which the previously received speech signal frame has a voiceless speech signal, the substitute speech signal frame is produced by means of a noise signal.
Claims12
A method for outputting a speech signal (11), wherein speech signal frames (1, 3) are received and are used in a predetermined sequence to produce the speech signal (11) to be output, wherein, in the situation in which at least one speech signal frame (2) to be received is not received, at least one substitute speech signal frame (100) is used instead of the at least one speech signal frame (2) which has not been received, wherein the at least one substitute speech signal frame (100) is produced as a function of at least one previously received speech signal frame (1), characterized in that, in the situation in which the at least one previously received speech signal frame (1) has a speech signal without voice, the speech signal of the at least one substitute speech signal frame (100) is produced by means of a noise signal.
A controller (1000) for outputting a speech signal, having a first interface (1001) via which the controller (1000) receives speech signal frames, having a computation unit (1003), which uses the received speech signal frames in a predetermined sequence to produce the speech signal to be output, having a second interface (1002), via which the controller (1000) outputs the speech signal, wherein, in the situation in which at least one speech signal frame to be received is not received, the computation unit (1003) uses at least one substitute speech signal frame instead of the at least one speech signal frame which has not been received, wherein the computation unit (1003) produces the at least one substitute speech signal frame as a function of at least one previously received speech signal frame, characterized in that, in the situation in which the at least one previously received speech signal frame has a speech signal without voice, the computation unit (1003) produces the speech signal of the at least one substitute speech signal frame by means of a noise signal.
Dependencies are inferred from the claim text.