<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">me too, i don't find the implementation in thomas' link very convincing. <div>but the phenomenon works. </div><div>i think the scale-movement doesn't help: </div><div>take some voices with i.e. repetitions in a particular rhythm-proportion, the slower one fading out, the faster fading in and the whole process with an acc. or rit. </div><div><br></div><div>j.q.</div><div><br></div><div><div><div>Am 15.10.2009 um 15:09 schrieb Justin London:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">This is a nifty idea, but I don't think it works. For the periodicities one tracks in the ritardando illusion are invidividual, discernable strands of the musical texture (so to speak), as these stream separately from the other periodicities at different rates in different registers. Whereas in the case of the shepherd tones, the components tend to fuse into a single tone percept, which enables the illusion. <div><br></div><div>Best,</div><div>Justin London</div></div></blockquote><br></div><div>----</div><div><br></div><div><div>Prof. Johannes Quint<br>Hochschule fuer Musik Koeln, Standort Aachen<br>An den Frauenbruedern 1<br>D-50264 Aachen<br><br><a href="mailto:johannes.quint@web.de">johannes.quint@web.de</a><br></div><div><a href="http://www.johannes-quint.de/">http://www.johannes-quint.de</a></div><div><br></div></div></div></body></html>