YEM accepts 44100kHz 16bit wav samples for stereo (22050kHz 16bit for mono).
I have never heard about WXC audio data format. I think I've seen somewhere WXC chip being mentioned, but it was not in audio format context.
Bogdan
I saw this information from the official package of Yamaha. It seems that Yamaha's package has compressed the samples, but I am not very sure how they are compressed。
<keybank number="5">
<noteLimitHi>G8</noteLimitHi>
<noteLimitLo>G#7</noteLimitLo>
<velocityLimitHi>127</velocityLimitHi>
<velocityLimitLo>1</velocityLimitLo>
<volume>-0.800000</volume>
<pan>0.000000</pan>
<centerNote>D7</centerNote>
<tuneCoarse>0</tuneCoarse>
<tuneFine>0.000000</tuneFine>
<tuneLoop>0</tuneLoop>
<samplingFrequency>32000.000000</samplingFrequency>
<fixedPitch>OFF</fixedPitch>
<oneShot>OFF</oneShot>
<sample position="MONO">
<waveFilePath>6b5164ee6e433a5733525cc4b18b5ede1ac92a03</waveFilePath>
<waveType>WXC</waveType>
<waveStartAddress>1c000</waveStartAddress>
<sampleSize>352</sampleSize>
<startPoint>0</startPoint>
<loopStartPoint>0</loopStartPoint>
<loopEndPoint>0</loopEndPoint>
<wavePlacement>ABSOLUTE_ADDRESS</wavePlacement>
<waveStartFrame>7168</waveStartFrame>
<startFrame>0</startFrame>
<loopStartFrame>15</loopStartFrame>
<loopEndFrame>21</loopEndFrame>
<lpcCoef>0</lpcCoef>
<pitchUpLimit>0</pitchUpLimit>
<beginLoopIndex>0</beginLoopIndex>
<beginLoopAddress>3</beginLoopAddress>