Devices and methods of source-encoding and decoding of data

An encoder (20) as claimed in any one of the preceding claims, characterized in that the encoder (20) is operable to analyze the data (D1, 10) to determine minimum (min) and maximum (max) values occurring therein, and information describing the minimum and maximum values is included by the encoder (20) into the encoded data (E2, 30), wherein the minimum (min) and maximum (max) values limit a range of possibly available symbol values when employing range coding.

An encoder (20) as claimed in any one of the preceding claims, characterized in that the encoder (20) is operable to modify an entropy of the data (D1, 10) to be encoded, prior to applying range encoding thereto to generate the encoded data (E2, 30).

An encoder (20) as claimed in any one of the preceding claims, characterized in that the encoder (20) is operable to encode the data (D1, 10) corresponding to at least one of:

• captured audio signals, genetic sequencing data, captured video signals, captured images, text data, seismographic data, sensor signals, analog-to-digital (ADC) converted data, biomedical signal data, calendar data, economic data, mathematical data.

A method of encoding data (D1, 10) in an encoder (20) to generate corresponding encoded data (E2, 30), wherein the encoded data (E2, 30) includes information of frequencies, probabilities or range values of symbols to be represented in the encoded data (E2, 30), characterized in that the method includes:

• using the encoder (20) to include in the encoded data (E2, 30) additional information indicative of whether or not information of frequencies, probabilities or range values for the symbols is included in the encoded data (E2, 30).