In Digital Audio Broadcasting (DAB) according to ETSI EN 300 401
there is the possibility to transmit Program Associated Data
(PAD) just within the audio bitstream. The same applies to
ETSI TS 102 563, which is commonly also known as DAB+. The PAD
is transmitted by embedding X-PAD (extended PAD) and F-PAD
(fixed PAD) data into regions designated for such auxiliary
information. Several applications can be transmitted in parallel
and independent from each other this way to the consumer's
device.

The XPADxpert displays this information within a DAB(+)
recording and enables interested persons to take a look at what
exactly is transmitted and to check for possible bugs.
It is written in Java and provided as freeware without any
warranty.