Sonic reasons we need more Jazz and Rock SACDs

Other than all the great and Jazz and Rock recordings still missing on SACDs, there are sonic reasons these would be good for the format.  High percussion instruments have the highest ratio of ultrasonic to audible frequencies.

For example, the proportion of energy above 20 kHz is

• Muted trumpet, 2 percent (Harmonics extend to 80 kHz)
• Violin, 0.04 percent (Harmonics extend to above 40 kHz)
• Oboe, 0.01 percent (Harmonics extend to above 40 kHz)
• Cymbals, 40 percent (Harmonics still strong at 100 kHz) 

Muted trumpets are used a lot in Jazz, and Cymbals are heavily used in both Jazz and Rock.  While percussive rich Classical music recorded in a concert hall does have a lot of ultrasonic energy, I do not believe it can compete with Jazz and Rock with the percentage of ultrasonic to audible frequencies.  This thus explains why I usually pull out a Jazz SACD first to show off the sonic advantages of the format.  I never knew why I did that, now I have scientific proof for my choices in demo material.

For more on the ultrasonic response of musical instruments see:
There's Life Above 20 Kilohertz! A Survey of Musical Instrument Spectra to 102.4 KHz