<s xml:id="echoid-s11746" xml:space="preserve">questo intende Vitruuio quando
<lb/>
dice.</s>
<s xml:id="echoid-s11747" xml:space="preserve"/>
</p>
<p>
<s xml:id="echoid-s11748" xml:space="preserve">Adunque quando ſono rattenute d’alcuno oſtaculo le prime ſturbano le ſeguenti; </s>
<s xml:id="echoid-s11749" xml:space="preserve">con la iſteſſa ragione la uoce in gi-
<lb/>
ro, & </s>
<s xml:id="echoid-s11750" xml:space="preserve">come à ſeſta ſuol fare il ſuo mouimento, ma nell’acqua i circoli ſi mouono in larghezza nel piano eguale, & </s>
<s xml:id="echoid-s11754" xml:space="preserve">aſcende à poco, à poco.</s>
<s xml:id="echoid-s11755" xml:space="preserve"/>
</p>
<p style="it">
<s xml:id="echoid-s11756" xml:space="preserve">Da questo conclude Vitr. </s>
<s xml:id="echoid-s11757" xml:space="preserve">la riſonanza de i luoght, è, dice.</s>
<s xml:id="echoid-s11758" xml:space="preserve"/>
</p>
<p>
<s xml:id="echoid-s11759" xml:space="preserve">Come adunque nell’acqua nelle diſſegnationi dell’onde, coſi nella uoce quando non ui è oſtacolo nella prima non di-
<lb/>
ſturba la ſeconda, ne le ſeguenti, ma tutte con la loro riſuonanza peruengono alle orecchie, ſi di quelli, che ſo-
<lb/>
no abbaſſo, come di quelli, che ſono ad alto, però gli antichi Architetti ſeguitando i ueſtigi della natura, nel
<lb/>
cercare la ragione della uoce, fecero i gradi de i Theatri in modo, che ordinatamente aſcendeſſero, & </s>
<s xml:id="echoid-s11760" xml:space="preserve">cercarono per
<lb/>
la regulare Mathematica, & </s>
<s xml:id="echoid-s11761" xml:space="preserve">Muſica ragione, che ogni uoce, che dalla ſcena uſciſſe, chiara, & </s>
<s xml:id="echoid-s11762" xml:space="preserve">ſoaue all’orecchie de
<lb/>
gli ſpettatori perueniſſe.</s>
<s xml:id="echoid-s11763" xml:space="preserve"/>
</p>
<p style="it">
<s xml:id="echoid-s11764" xml:space="preserve">Se adunque la uoce per lo aere in giro ſi moue, chi dubita, che la ſorma ritonda, è circolare non ſi conuegna al Theatro? </s>
<s xml:id="echoid-s11765" xml:space="preserve">perche quando il
<lb/>
Theatro ſuſſe di ſorme angulari, non egualmente la uoce terminarebbe, percioche alcuni udirebbeno bene, come piu uicini, alcuni male,
<s xml:id="echoid-s11771" xml:space="preserve">gli antichi Architetti hauer uſato la regolata ragione de Mathematici, intendendo per canonica, è regolata la ragione de
<lb/>
numeri, dellaquale i Muſici eſperti ſi ſogliono ſeruire, & </s>
<s xml:id="echoid-s11772" xml:space="preserve">comprende la ſpeculatione, & </s>
<s xml:id="echoid-s11778" xml:space="preserve">Et perche il luogo ſia piu riſuonante oltra la circolar figura de i Theatri, oltra il giuſto ſalimento de i gradi toccati tutte da una ſteſſa linea,
<lb/>
ne i loro anguli, ſecero ſopra gli ultimi, & </s>
<s xml:id="echoid-s11779" xml:space="preserve">ſupremi gradi un portico à torno il Theatro di ſopra con ampie aperture dauanti, ma chiuſo
<lb/>
da dietro, accioche la uoce ſottentrando in quelle ampiezze riſſuonaſſe ſotto que uolti, come riſſuona nelle cauerne, & </s>
<s xml:id="echoid-s11780" xml:space="preserve">ne gli inſtrumenti,
<lb/>
che hanno gran corpo. </s>
<s xml:id="echoid-s11781" xml:space="preserve">Di queſti portichi ne dir a Vitr. </s>
<s xml:id="echoid-s11782" xml:space="preserve">al ſuo luogo, fin tanto auuertiremo à quello, che egli dice.</s>
<s xml:id="echoid-s11783" xml:space="preserve"/>
</p>
<p>
<s xml:id="echoid-s11784" xml:space="preserve">Perche ſi come gli organi nelle lame d’ottone, ò di corno ſi ſanno per la dieſi perfetta alla chiarezza de i ſuoni delle
<s xml:id="echoid-s11815" xml:space="preserve">pone diſtintione tra quelle coſe, le quali per la loro ſottigliezza non poſſono eſſer dal ſenſo giudicate. </s>
<s xml:id="echoid-s11816" xml:space="preserve">L’altra nelle operationi con-
<lb/>
ſumandoſi, & </s>
<s xml:id="echoid-s11817" xml:space="preserve">praticando in diuerſe maniere, ſi con la uoce, come con gli strumenti, & </s>
<s xml:id="echoid-s11818" xml:space="preserve">componimenti dilettera il ſenſo de mortali affati-
<lb/>
cato, & </s>
<s xml:id="echoid-s11819" xml:space="preserve">porgera gentile ammaeſtramento della uita (come nella Poeſia ſi uede) laquale è una delle parti di queſta Muſica principale. </s>