在Virtual.lab的点声源定义中,是否输入的是不同频率下的声源声功率级?
在詹福良老师的书中用声线法计算小车车内声场时,在P.472定义点声源时,用的是声功率级,可是单位是“W”(见下图),该如何解释?data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAhIAAACECAYAAADFncLIAAAZVklEQVR4Ae2dPY/tunWG968aYP+bKS4GOLBb1zZuijHgC2y4SZwqFwkQBxgD7k6ZJv2x+ykvkMDd+QcMSIrUIilR3xQ39Rxgjj4okdSzFhdfUdri7W9/+1/FHwzwAXxA+sA//qHU3//+f+ovf/kf9ac//VU9Hv+pfvrpP9Qf/vDvo39j6b///b+p3/3uX9RvfvOT+tWvfjR/uqwSZchrYr1OH1dKqe/fv1fXD/3888/qhx9+0NWjfhM64UbjqrNxYRfscqYP/PnP/20ExG9/+8++83ciYI+lvrYSZZzJkLLntWE66nmcYn+qSeggJCaUVmw8ttc5Pdyei9sf//hf6scf/1X9+tf/dJiQKFEGfle/3yEk1tkIIUHnXd0wHgF3XWOGG9zwgW0+oIWE7hRr/HOPNmqsmxQSZ9ePEQlEDaIGH8AH8IHTfEB31vw9NwOEBAHktADCndy2Ozn4wQ8fwAdq8IHb2UMilF/nkB52wS74AD6AD+ADc3zACIkvX74o/mCAD+AD+AA+gA/gA0t9wAsJ/cIL/yCgCWgn4h8EHAH8wZFgqQngD3k/uCKfQEj88ssvir9rM9DDWK4h4AvX9gVtf/wBH5BxAH/I+8NV+SRCQn9hjL/rMogbAr5wXV/Qtscfrm3/uP3jD3l/uCofhATCKRCOV20IccBk2wZM/CHfcVzNT/CHvD9clQ9CAiGBkMAHAh+QneNVA6NkwHrfeeIPPYshv7gqH4QEnUjQiVy1IQwFBfbxaAMfCDvOuuLDh3q9vaqPimL4Nj76el7U+7eQ+TP44Awh8U29v9zU7Sb+Xt7VtwLG+3jtynz9UN+/23q8fkSQv72rlwln8vkUqvczGH6sjtMNYV9/8LZ5/VBm3di6t/G39xd1i+zm9r07/4jSx66N/T3XuSym/eG7sdvL+7dAkM7NPz4Of1huo5jhkdtz/MGW38WJqD3vW7e8kDjDl6b5pPGz79POFRKS11I7zRYS/cWWc3R9YX2564WEgfLxmnRIS2Fd4fi5DaG3i+1IbisDRmDjxEau0YUqXZ/jO67knHL+iT9Y1oE9Nt5g4A91++90fOjqr2/wXl4mb/K2taFpIeHjVBInjokt03x0uSKemRtht32+kPC8FrZjhMRCYNscv+4goa9tXkOQAu+7+q4b6R5CImhUmpUNFK+JoHQNryubEYldRgOGfHvaH/YfkfDBDH84zK5Dtp6zb44/6Hz0qKEW+4Ew3D3WLhAShXxpmk8kJL7L9nNJIWEV3euHvvibuNvvtrtHIf7O0ThRmGYel2Q6gdAJXXlRZ2wcxD4nM0Pe8hGMXncdXKJIo3x2d/LnzH9eQ5BCwtolZ+cwLeSStXEnUIxdnR2FvU3gw66HdjbT/iADobZtFww/9CNH+2jSCANtp8GYgD/M6cBrOWaOP9jH0J3YT9rnEv9wMT/sN7zQ7G40xt6ROCO2TPPR1yRuhIaExHvfVnz/pfsnE/v6Vwx6Dla4ufZ1Cx71h+yWx+Lu/Ew/rX1z9ohEX0k3rGyNnFZaQnKO4AKM7IC6IfFMBYccQdajXx944SZ24Hgb4TDYAc1rCL0z35KXg7pA4V8Ykj4QdhraAUMbdw2iEw0+TTcg5yfajk5UaBti10E77tXxTPvDkJAQNxbaPlLQx0Iwaofe5t1+KSJ9Gv5wqM1zvjPHH8I2GceDqGPK+sdAH2OOd/Fe5+XW64gt03z0NYk+0rQHt92xcfEtSPum3l/Fu4mSw2ibitkvicUD7KO2Kv1ktpCQ6sdmMFAp5xTdnYfr6I0K0mmuM3AVGtrn0pJOZqA8fewQxKF9E2VJKFden9cQekGog3vSsUf2134wpoR95+Dsrm1n/ETb2zWwfl0fH+SFXQ/tVKb9YUhIOLu5G4jcdtgB4A8hj9pi0XJ/2OIfQzFf7lsmJExfcXBsmeZj6+/6xvBGbKjjl21nbOShEyDxTZ2OjatjseQ87ZP7C4lYLLgOYijgD+1zx68WErExOggTZdXWYM+qz9yG0AtL68R+eyHnpONww5VeUFj72eO0c4cNK7z7mXb4s7g+a7nT/rClo0jthT+kTGrynWl/cJ2aHLXU627kII7Pue2hzkzu0+e6fFNuZ/jSNJ+BGOb7vJiFONbcHIubqKGb5e6XjV6cbIrFknPKNvbJfYWE6QT6u1Vd2MerM7SGJNNsRZNRCg/VBijfQc36+Wfm4hdCjUFdZXteQ5B27FSyF5CxnaUPpA6ZNvbO7q+v6cjD66t69eV0eWHXtkck3A0F/nConefGt8n4oNtj0rnLmBB3lrntro9wQ/3dS5x9/vpc17/UEVsm+Zh+LLoZ8n1ezEJff3dsFOfs+4DdtX97V+/+swiyD9T5hbG674+neMl8umONeOnqE63vLCTco4ZejfZCoHue7YdaXtS7fqkk7hg81OVCQndKyVCOc8LIEHMbztWOm9cQQud03/jwjzg69exsEfiAsK9mOyQkzChD1ADsS3zRYxSdF3Y9tIOZ9gdrw/5xUxwMp7bDgIY/hDxqiz9T/mBisIu5oq33+6f8QaZ3ndmrHKKXwkEfK7dDdmf40hSf4EVUwcfaWV67vhYhJPxog+3jXrSwFtdu+Lq+VfJfHYt3FxKhcXZ17IlOYNAREvgz6zdR1q7XtbaOFZw33RBm8p55LZttjF1PFxJ7th38Yd/2tadtdF5l48NAZzYzrui6nuFLZfns6ytbeM0Ykdi3soFjT3QC+sLMXa1UWAscyZXl88mMfrhjr74s3RC8bVbY2J+LXQ8TE/jDgfFvRSw7Oz6V9YftQmJt/7E2tpTls69v+mteEYurFhJnN5orlv/MDeGK9jr6mvGHfYP10fY6Ov+y/rBNSBzNYij/snzq8c1zhcQTKvIh52lp31UbQks23PNa8Id6gvWedl2bF/6Q94er8gmEhIbAHwy+fPmi9D98AV+QgRF/wB/wh2kfuGL89EJCXzx/MMAH8AF8AB/AB/CBJT7ghYS5BeU/CEAAAhCAAAQgsIAAQmIBLA6FAAQgAAEIQCAkgJAIebAFAQhAAAIQgMACAgiJBbA4FAIQgAAEIACBkMCEkPiq3txnN29v6mtwrky7q8enTMylyeM+1eN+U29hxkp9PtQ9KU+ex/q5BOba99xaUnopAvhDKdLPUQ7+kLdTe3wyQkJ38r14+Pp2Uzff41sBcHfq4eubuvmOP5cW40VIxETq315i3/qvhhpuJYA/bCXY1vn4Q96ebfLJCIkIhxYL94cyAw/JiIGFY3RGLi3KUilxnkxL8pCJrJ9KILHNiA1PrSSFFyOAPxRD/RQF4Q95MzXKZ7aQ0CMSwQiEH52w3Hy6FhxjaQnikU5IwP583NMZPaP8k2zZcRyBRfY9rhrkXAkB/KESQ1RSDfwhb4hG+eSFhOnQ7cRZsu82nbvcoZRyQiKXlhK2QsJNNx0u+8cq/jxtBDcq4neyUpLAMvuWrBllnUEAfziDer1l4g9527TKJy8kBBPzjoTrxHOqKpcm8rOr0yMS/hQxSuH3sVKewCL7lq8eJRYmgD8UBl55cfhD3kCN8pktJJTSb5p2v87QMJyoMNiEIMilJYjFeTItEQ2ibHkc6+UJLLJv+epRYmEC+ENh4JUXhz/kDdQon3EhoTtz8fjCDMl48RAJgABOLi1mHB3rkgMhMXKMO5ZlYQKRPQLbF64KxVVAAH+owAgVVQF/yBujTT7jQkLpzznIFx2jdxZMZ2/fn+h/+tkhzKUFlCOoLk0ICfNIxX/LoitPCBx3CsuCBGbbt2CdKOo8AvjDeexrLBl/yFulQT5ZIZGnQSoEIAABCEAAAlcngJC4ugdw/RCAAAQgAIENBBASG+BxKgQgAAEIQODqBBASV/cArh8CEIAABCCwgQBCYgM8ToUABCAAAQhcnQBC4uoewPVDAAIQgAAENhBASGyAx6kQgAAEIACBqxNASFzdA7h+CEAAAhCAwAYCCIkN8DgVAhCAAAQgcHUCWSERftnyFk0Prue/cF+27Obg8DRzaf4g/e1M9bjfVPKhSvPlr+hLmvI01s8lEHyZbcB+pnbWB/zU8+fWmNIPJTC3vR9aCTKvhQDxYcIS7bWXrJBwU4OnVKwA8J2Enm/h5jr+XFqcE0IiJlL/tm0EXvwFtu9r70So95E+ibWmCCxp701dOBczSID4MIjF72yzvUwKCd9heBBmEg5198JBJwhBkIwmiDSZh1kfSUvySE5kx2kEdKBwolFXQm9HI1LafveHerzdFELiNEOVKThpqyNtukxtKOV0AsSHrAkabS8ZIWEDws0/vhCdh74LjRSGH73IpSWER4KOgO3ubPt6xI9YkkzZcTABbRMvEBJ79zb1PnFwfcj+RAKJ/ZXC7ifao4KiiQ8ZIzTaXjJCIoRhOvRuGnGzPiIkcmlhjnorFivunQu9FMLFnaiN4KcydztZliZgbOwFZjjqIDsRuV66jpRXhsCy9l6mTpRyLgHiwzj/VtvLbCERDGHnVFUuLeHb370GSWJEwu8f2ucTWSlGwNhBPsoQz0QjoYeQKGaV8wpa1N7PqyYlFyJAfMiDbrS9rBcSwciAEARRZ+JGHaIBjA62OE/iT0TDwHN4eTzrxQiMK+qv5hc4wSMoN2oR+EqxqlJQCQKL2nuJClHGmQSIDxP0G20vGSHxqT4/eyj67rJ/rBAJgABOLq3Pz65Fx7rkQEiMHOOOZVmWQO6OI6oJIxIRkCY3o/YZxIImL5iLyhEgPuTo+Mf5/sa6kfaSFRL6Gw/+DjO+qzQO49Kj9xlyaQHmKAi5NHO+zdMIGHdn65beCu4ElkUJaOd3triNfUeCl+6K2uTMwma39zMrSdnFCBAf8qgbbC8ZIZFnQSoEIAABCEAAAhBASOADEIAABCAAAQisJoCQWI2OEyEAAQhAAAIQQEjgAxCAAAQgAAEIrCaAkFiNjhMhAAEIQAACEEBI4AMQgAAEIAABCKwmgJBYjY4TIQABCEAAAhBASOADEIAABCAAAQisJoCQWI2OEyEAAQhAAAIQmCEk7KRMftpoz8zut184lJM46QPWpvnM00+JuiTx1Uu3i2VhAsGX2ZbYvnA9Ka4QgVx7L1QFiqmHAPFhwhbttZeMkLCfr9bTeb+9hVNFu4m4vLgwn0R1n8m25y1Pi9lPfz47PoPtEgRsI/BfKQ++FZ+zfYm6UUZ5Ati8PPOaSyQ+5K3TZnvJCIkeRzL5UjIqIDr9tWl9cd2ayFOmJfnLRNYPJxAIB12atlM3KpHYZsSGh1eSAooRwObFUD9FQcSHvJkabS/rhIR2Fn9Larl5sbE2LcE/0gkJQ5gpa8XkUeYxS1SvJFt2bCMwGCi6ibtytt9WKmfXSgCb12qZc+pFfMhzb7S9rBIS43POf6q1aSl9KyTkLJP9unuMIs5KHFiksbofASPkxIyfmns3A2jO9vtVgJxqIoDNa7JGBXUhPmSN0Gp7WSUkVE5VrU1L8E+PSPhTxCiF38fKcQQ68WCE3f2hHm/do42c7Y+rDTmfSQCbn0m/zrKJD+N2abS9rBcS94f69LhEp69BrUnzebkVkafbpZeJaNAv98S/HJAnsH4sAc2/GyHK2f7YSpD7WQSw+Vnkn6Rc4kNgqEbbyzohYV6wi4a3vXiIBEAALpcW4J75888ovzgLtg8n4N+NMSVF9ghsf3hVKOAUAtj8FOxPUijxITZUm+1lpZBwIwM383xc/0T0q+TVPSez7zQsSJN5xGLFpYkRCe2k/XsT3TovWzpSBy1tQ3Dc/c98XWk527tjWLZFAJu3Zc9NV0N8mMTXYHuZJSQmwXAABCAAAQhAAAKXJICQuKTZuWgIQAACEIDAPgQQEvtwJBcIQAACEIDAJQkgJC5pdi4aAhCAAAQgsA8BhMQ+HMkFAhCAAAQgcEkCCIlLmp2LhgAEIAABCOxDACGxD0dygQAEIAABCFySAELikmbnoiEAAQhAAAL7EEBI7MORXCAAAQhAAAKXJJAXEvoTx36a7ng+C/0Ndfdlyb3SpA2iT4m6JPFlS7eLZWECwZfZlti+cD0prhCBXCwoVAWKqYcA8WHCFu21l4yQ+Kre/PwZSpkZP/2nsG0n7z+PbASH+xT22rSYPUIiJlLHtm0E/kvkwXwaOdvXUXtqsTcBbL430efOj/iQt1+b7SUjJGIc2kG6u89kVEB0+mvT4uJmzLWRnMKO4wkEwkEXp20/wy+OrxklnEEg197PqA9lnkuA+JDn32h7mS8k5KiDXve3pJabn+VtbVqCX4gTmSYM8fm4i0cvTNolMR22Phgouplgc7Y/rEJkfCoBbH4q/uoKJz7kTdJoe5knJEzn3U8bbjrwESGxNi2lb4VE/46Gex9DL91jFHFW4sAijdX9CES+YB95Wd/I2X6/CpBTTQSweU3WqKAuxIesEVptL5NCwly4e6ThEOVU1do0l7dfTo9I9Ic+1H1IXPgDWNmVgLaxe9H2/lCPt+7RRs72u1aAzKohgM2rMUU1FSE+jJui0faSFRL6cUX8CMMQ0jDki5jyfYa1aQn6uUJCvLuR5MGO4wlo/t0IUc72x1eEEs4ggM3PoP5EZRIfAmM12l7GhYR4FyEAYTaiTj6AszYtLiXKxyUH9Ro5xh3L8nAC/t0YU1Jkj8AvDq8KBZxCAJufgv1JCiU+xIZqs72MCwndCbjha7H0r0Z0z8LsMdE7C2vTAuYRcJcmhIQZMRF1M3XxFXQnsNyXgLWL8w3/E2BXSM727hiWbRHA5m3Zc9PVEB8m8TXYXsaFxCQNDoAABCAAAQhA4OoEEBJX9wCuHwIQgAAEILCBAEJiAzxOhQAEIAABCFydAELi6h7A9UMAAhCAAAQ2EEBIbIDHqRCAAAQgAIGrE0BIXN0DuH4IQAACEIDABgIIiQ3wOBUCEIAABCBwdQIIiat7ANcPAQhAAAIQ2EAAIbEBHqdCAAIQgAAErk5gQkjo76S7WTejr1cqmdZN2uRprk3zGSgl5+8IdjNBl8RxynrwZbZ+VtiwLtYHki9fhgex1QSBXHtv4gK5iCUEiA8TtNprLxkhoT912ouHcAIv+xlU30mYz2m7Y9emxextPskXr42TurLic9g+noBtBN4uge370u2ssTflfaRPYq0pArn23tSFcjGzCBAf8pjabC8ZIRHhkBMwJZ256PTXpkXFMSKRAKlkhw4UUsjp7WhESvuAmV4cIVGJ0Y6rRq69H1cqOVdLgPiQNU2j7WW2kAhmcdOiwt+SWmw+fW1aQl+IE5kmDOHuet0EUkzaJUEdt665+5GGxN693bxPHFcVcj6bQGJ/pbD72UY5t3ziQ4Z/o+0lLyRMp23fkZC6wXTgcofqg8fatBS97ZACkTD6voapgLrdH+ozzYg9OxMwNva2CEcdZCci13euAtlVQiDX3iupItUoTID4MA681faSFxKCh+4UfEedU1Vr00RZdrW/sw2SxIiE3z+0zyeysisBw1o+yhDPRLXthZhDSOxKvs7Mcu29zhpTqyMJEB/ydBttL7OFhDK/0ug6kKjDCN5nWJuW4J8rJAae0Sd5sWMvAuOK+qt63N0vfKKlEBd71YN8KiGQa++VVJFqlCNAfJhg3Wh7GRcSWlmKxxfGQXyHEHXyAZy1abEBonxccjD6MHKMO5bl/gRydxxRaYxIRECa3IzaYBALmrxgLipHgPiQo5N+1qCR9jIuJPQlP+6qf0dBvqlvEtXdPyffKS0wQRSgXJoQEuZxi69DdxcsxI87heXOBLTzC+5jyBESO3OvNTvTJt0oVBQLaq0z9TqOAPEhz7bB9pIVEnkapEIAAhCAAAQgcHUCCImrewDXDwEIQAACENhAACGxAR6nQgACEIAABK5OACFxdQ/g+iEAAQhAAAIbCCAkNsDjVAhAAAIQgMDVCSAkru4BXD8EIAABCEBgAwGExAZ4nAoBCEAAAhC4OgGExNU9gOuHAAQgAAEIbCCAkNgAj1MhAAEIQAACVyeQFRLhly1v0dThdrIm+4VDOYmTRro2TZpj+suW8mjWSxLI2bdkPSirDgL4Qx12qKUW+EPeEu3xyQqJ8U8c207+/ugm7TafRHWfxl2bFqNHSMRE6tjO2beOGlKLkgTwh5K06y8Lf8jbqE0+k0JicB4FMd+FhWbhmGPXpiX0RZ4yLclfJrJ+OIGE/4idDq8IBVRBAH+owgzVVAJ/yJuiUT4ZIWE7iH5yJjfioJ9cvEWPOfSumzIjFGvTEvwjHZQwRPLoRU8kNah8kszZsZZAzr5r8+S85yWAPzyv7Y6oOf6Qp9oon4yQCHnIacTNetRhOyGxNi0sTW/FQsbNLqiXQtS4E7WB/DTnbifLvQnk7Lt3WeRXPwH8oX4blawh/pCn3Sqf2ULCvkDZvVSZU1Vr0xL+0yMS/hQxSuH3sXIMgZx9jymRXGsmgD/UbJ3ydcMf8swb5bNeSAR3/6LT16DWpCX4RZ4yLREN+g3Y+Fcj8gTWdyWQs++uBZHZUxDAH57CTMUqiT/kUTfKJyMkPtVn96MMTUY/uugFQtTJB3DWpsX8o3xcciAkRo5xx7I8gEDEPLD9AcWRZeUE8IfKDVS4evhDHnibfLJC4nEX7yUEowz6FYaHuuuXG81f9M7C2rTAAhFwlyaEhBE3vg5dXaJ3N9xpLHckkLPvjsWQ1ZMQwB+exFCFqok/5EE3yOf/AeBKmHHRNjXEAAAAAElFTkSuQmCC
另外,仿真结果中100Hz时声场声压级达140dB(见书中P.475图7.20),该怎样解释?
若声源声功率与频率有关时,应该输入不同频率对应的声功率!
You have the choice between a Constant (dB RMS) value and a Frequency Dependent value. The constant value can be defined in dB(RMS) in the fields from the combo boxes. The frequency dependent value is defined using an edited load function, in the units as indicated in its GUI. Upon selecting this option, a selection field will get activated. You can either create a new function or refer to an existing one. Refer to the Edited Load Function Set topic for more details.
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