Provided herein are a cooking apparatus and an operating method thereof. The information within the metadata box describing content may be MPEG-7 data, which is compliant with the MPEG-7 specification. First, the microcode is independently tested by using a functional emulator performing in the same way as the processor hardware according to the processor’s functional specification. In addition, the present invention provides method for making a radiation-curable prepolymer of the invention and for making a medical device, preferably an ophthalmic device, more preferably a contact lens. The integrated Fischer-Tropsch process includes, optionally, synthesis gas production, Fischer-Tropsch reaction, Fischer-Tropsch reaction product recovery and, optionally, separation, catalytic dehydration of primary and internal alcohols, and, optionally, hydro-processing. More specifically, independent audio paths are provided for processors performing audio processing on the SOC and mixing of decoded audio samples from the processors is performed digitally on the SOC by a hardware digital mixer.