Abstract: When combining digital data sets in the time domain into a combined digital data set a subset of samples of each digital data set is adjusted to enable unraveling the data when decoding. To enable correction during decoding of an error introduced by the adjustment, an error approximation is stored for each adjusted sample. A set of error approximations is created which is indexed allowing substantial reduction in size of the error approximations to be stored for the adjusted samples. Instead of creating a set of error approximations for each combined digital data set one set of error approximations is created based on the errors introduced when creating multiple combined digital data sets.

Abstract: When combining digital data sets in the time domain into a combined digital data set a subset of samples of each digital data set is adjusted to enable unraveling the data when decoding. To enable correction during decoding of an error introduced by the adjustment, an error approximation is stored for each adjusted sample. A set of error approximations is created which is indexed allowing substantial reduction in size of the error approximations to be stored for the adjusted samples. Instead of creating a set of error approximations for each combined digital data set one set of error approximations is created based on the errors introduced when creating multiple combined digital data sets.

Abstract: A converter and conversion method are disclosed for converting N channel audio input channels into M channel audio output channels, wherein a processor is used for applying a transfer function to a signal received on an input channel to obtain reverberation components of a calculated output channel, wherein said transfer function is a simplified transfer function matching a selected subset of a set of local maxima of a measured reverberation when applied to a corresponding stimulus.

Abstract: Two digital data sets are combined by equating a first subset of samples to neighboring samples from a second subset which is interleaved with the first subset of samples where the equated samples of the two digital data sets do not correspond in time, and by subsequently adding corresponding samples from both digital data sets. This results in a third digital data set that allows the unraveling of the two digital data sets. The third digital data set, when combining two digital audio streams into a single digital audio stream, is still a good mono representation of the two combined digital audio streams and can thus be reproduced on regular reproduction equipment, yet the use of a decoder according to the invention allows the unraveling of the two digital data sets from the third digital data set.

Abstract: A converter and conversion method are disclosed for converting N channel audio input channels into M channel audio output channels, wherein a processor is used for applying a transfer function to a signal received on an input channel to obtain reverberation components of a calculated output channel, wherein said transfer function is a simplified transfer function matching a selected subset of a set of local maxima of a measured reverberation when applied to a corresponding stimulus.