Mr. Augspurger is quoted at the top left hand portion of page 429 in his paper "Loudspeakers on Damped Pipes"
"This is clearly shown in Fig. 6, which is the analog response of a small automotive loudspeaker on a .78 meter pipe. This is nominally a 109 hz pipe, but it actually resonates at 100 hz, which is also the loudspeaker's cone resonance. The light solid line represents cone output, the dashed line is pipe output, and the heavy solid line is the combined system response. Note that the upper resonances and antiresonances fall at exact 100 hz intervals."
Mr. Augspurger's analysis is clearly somewhat limited in this respect - he doesn't seek to explain why he's observing this phenomenon - he's just announcing it's presence.
Mr. Natkaniec's paper, which Mr. King suggested we all delete from our hard drives, does seek to answer this very question. And in my opinion, he does so accurately and eloquently.
"This is clearly shown in Fig. 6, which is the analog response of a small automotive loudspeaker on a .78 meter pipe. This is nominally a 109 hz pipe, but it actually resonates at 100 hz, which is also the loudspeaker's cone resonance. The light solid line represents cone output, the dashed line is pipe output, and the heavy solid line is the combined system response. Note that the upper resonances and antiresonances fall at exact 100 hz intervals."
Mr. Augspurger's analysis is clearly somewhat limited in this respect - he doesn't seek to explain why he's observing this phenomenon - he's just announcing it's presence.
Mr. Natkaniec's paper, which Mr. King suggested we all delete from our hard drives, does seek to answer this very question. And in my opinion, he does so accurately and eloquently.
Comment