Abstract: The invention provides main data (MD) which includes embedded data (ED), the data being provided with a main data descriptor (MDD) for signaling a content included in the main data, wherein an embedded data descriptor (EDD) is formed for signaling content included in the embedded data and wherein the embedded data descriptor is provided outside the main data and the main data descriptor.

Abstract: Synthesizing an output audio signal is provided on the basis of an input audio signal, the input audio signal comprising a plurality of input sub-band signals, wherein at least one input sub-band signal is transformed (T) from the sub-band domain to the frequency domain to obtain at least one respective transformed signal, wherein the at least one input sub-band signal is delayed and transformed (D, T) to obtain at least one respective transformed delayed signal, wherein at least two processed signals are derived (P)from the at least one transformed signal and the at least one transformed delayed signal, wherein the processed signals are inverse transformed (T?1) from the frequency domain to the sub-band domain to obtain respective processed sub-band signals, and wherein the output audio signal is synthesized from the processed sub-band signals.

Abstract: A transcoder comprises a receiver (101) which receives input data representing an encoded signal and comprising first encoding data and first parametric extension data. The encoded data is fed to a decoder (103). The output of the decoder (103) is fed to an encoder (105) which generates second encoded data according to a different encoding protocol or with different encoding parameters. The first parametric extension data is fed to an extension data processor (109) which generates second parametric extension data directly from the first parametric extension data. The second encoded data and the second parametric extension data is combined in an output processor (107) to generate a transcoded signal comprising separately determined parametric extension data. The parametric extension data may be Spectral Band Replication (SBR) or Parametric Stereo (PS) extension data for an audio bitstream. Improved quality and reduced complexity is achieved by the separate transcoding of the parametric extension data.

Abstract: A frame structure is provided for streaming A/V data providing improved protecting and opportunities for concealing errors. The frame structure includes a header block and a plurality of sub-blocks. Each of the sub-blocks includes digitally encoded audio/video data corresponding to predetermined consecutive periods of the A/V signal. The sub-blocks are generally of variable length. For the header block and each of the sub-blocks a respective associated error protecting code is present in the frame for protecting the associated block during transmission. The header block also includes a location information field that provides information on the location of at least one of the sub-blocks in the frame.

Abstract: For streaming A/V data a frame structure is defined providing improved protecting and opportunities for concealing errors. The frame includes a header block 10 and a plurality of sub-blocks 22, 24, 26, 28. Each of the sub-blocks includes digitally encoded audio/video data corresponding to predetermined consecutive periods of the A/V signal. The sub-blocks are generally of variable length. For the header block and each of the sub-blocks a respective associated error protecting code 31, 32, 34, 36 and 38 is present in the frame for protecting the associated block during transmission. The header block 10 also includes a location information field 40 that provides information on the location of at least one of the sub-blocks in the frame.