14th International Congress of Phonetic Sciences (ICPhS-14)
San Francisco, CA, USA
Electro-palatograph systems that allow time-synchronous capture of
the EPG data and the corresponding speech signal, typically require a
special interface card for the connection to a computer. This makes
them dependent on the type of computer and its operating system.
Most computers used in speech research are nowadays equipped with high-quality 16-bit stereo analogue I/O. We therefore explored encoding the digital EPG data in an analogue signal within the bandwidth and the dynamic range required for a high-quality speech recording. This analogue EPG signal may then be recorded on any PC, MAC or workstation having such a sound interface. Recording it in stereo with the speech signal ensures perfect time-synchronization. System-dependency is thus reduced to the decoding and display software.
We illustrate the coding and decoding principles by describing an experimental hardware implementation of the coder and the decoding software.
Bibliographic reference. Scheffers, Michel / Thon, Werner (1999): "Synchronous recording of EPG and speech signals using a computer's sound interface", In ICPhS-14, 2255-2258.