[edit] European Data Format

SignalML description for the EDF files was included in the original article about the SignalML (Durka and Ircha 2004).

[edit] Format

Fixed-position with ASCII representation of numbers. Fixed width text fields. Length of header dependent on number of channels.

Data is stored as 16-bit integers.

Samples are stored in special order — in frames. Each frame is the same size. Within a frame, samples are laid out as (channel, sample):

 (0, 0) (0, 1) ... (0, N(0)-1) (1, 0) (1, 1) ... (1, N(1)-1)
 ...
 (M-1, 0) (M-1, 1) ... (M-1, N(M-1)-1)

where M is the number of channels and N(i) is the number of samples in one frame in channel i.