But, I would still argue that there is a loss of low end because you are not allowing the head to vibrate fully by burying the beater, therefore acoustically speaking you are killing certain frequencies.
I know that may
seem to be the case ... but it's not. Your ears are fooling you because you don't hear the resonance.
Putting pillows, etc., in the Kick drum, which also dampens the drumhead from vibrating, makes the drum sound deeper ... simply because the muffling is rolling off the high-end frequencies ... leaving only the low-end. The muffling material doesn't make the drum's physical dimensions any different; the length or diameter of the shell hasn't changed. Likewise, leaving the beater on the head doesn't alter the physical dimensions.
Playing a bass tone on a Djembe or Conga is the same way. Whether I leave or remove my hand after playing the tone ... the low-end is the same ... all though the
resonance and
decay is very different ... in addition to the rolling off of high-end frequencies due to the dampening with the hand. The realized fullness of the sound may be different, but if we measure the frequency produced by the drum, the low-end isn't affected. An exception might be if you press your hand, beater or stick into
any drumhead ... to the extent that you stretch the skin tighter ... which would change the pitch.
I too have studied mallet techniques (Stevens, etc.) so I do understand your argument and thinking. Read my article on
Kick Drum Technique; I talk about efficiency ... and you'll agree with 99.99% of what I share.
I play as efficient as possible in all that I do. But ... we are talking about a sound ... so sometimes we have to do things that aren't as
efficient as we might like in order to achieve the
sound we want.
So ... I don't think anyone is arguing about the efficiency of strokes. Leaving the beater on the Kick drumhead isn't as efficient as allowing to rebound so that you are ready for another stroke. As Stevens would say, you have to have a
preparation stroke to play a second note ... if you are leaving the beater on the drumhead. Playing
dead strokes on a mallet instrument is a valid technique ... right? Why not the technique of leaving the beater on the drumhead? Latin percussionists often place their index fingers on TOP of the drumstick when playing Timbales (ie. cowbells). Not all that physically efficient, but valid technique to obtaining the feel that they desire.
The validity of a technique has nothing to do with it's physical efficiency ... to me at least. I try to get the sound I need using the most efficient means possible. If anyone knows another (more efficient) way to get the compressed sound that you get when you leave the beater on the Kick drum ... please let us know!!!
