Simulation of Diffraction Based on the Uncertainty Relation
Language: English
Published by Epubli Apr 2014, 2014
- Softcover
- New
Seller: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, GermanyBuchWeltWeit Ludwig Meier e.K.
AbeBooks seller since January 11, 2012
Condition: New
£ 52.76
Quantity: 2 available
Add to basketItem description from seller
This item is printed on demand - it takes 3-4 days longer - Neuware -In both room and city acoustics, the simulation of sound propagation is stillchallenging. The handling of diffraction is still topic of current research, especiallythe diffraction of higher orders. Due to the large scale of the environmentcompared to the typical wavelengths of sound, Geometrical Acoustic (GA)simulation methods are used rather than exact wave theoretical simulationmethods. These GA methods handle sound as particles instead of waves (waveparticledualism as known from optics). Based on this restriction, wave effects suchas diffraction have to be modelled explicitly.In this work, a diffraction formulation called Uncertainty relation Based Diffraction(UBD) by Stephenson is investigated and extended. The UBD is based onHeisenberg's uncertainty relation and the Fraunhofer diffraction theory. The greatadvantage of this formulation is that the straight forward propagation technique ofparticles can be used and integrated as a module in the simulation. However, it willbe shown that some assumptions of former publications are not well founded, suchthat alternative formulations are presented. Good agreements with the wavetheoretical reference methods are shown in almost all cases. In addition to formerpublications, the UBD method is extended to 3D.Unfortunately, the usage of the UBD diffraction module causes a split-up ofparticles, such that the computation time increases exponentially. To overcome thissplit-up, the reunification of particles is aspired. Quantized Pyramidal Beam Tracing(QPBT) and the Sound Particle Radiosity (SPR) aim at this reunification. It will beshown that SPR is both more efficient and more accurate than QPBT. However, thememory effort of the SPR yields a major bottleneck. First optimizations to decreasethe memory effort will be presented to overcome this issue. 268 pp. Englisch.…
Seller Inventory # 9783844292572
Bibliographic details
- Title
- Simulation of Diffraction Based on the Uncertainty Relation
- Author
- Alexander Pohl
- Publisher
- Epubli Apr 2014
- Publication year
- 2014
- Condition
- Neu
- Binding
- Taschenbuch
- Language
- English
- ISBN 10
- 3844292578
- ISBN 13
- 9783844292572
- Item weight
- 413 grams
- Dimensions
- 210x148x15 mm
BuchWeltWeit Ludwig Meier e.K.
Bergisch Gladbach, Germany
AbeBooks seller since January 11, 2012
Shipping rates from Germany to U.S.A.
| Item | 5 to 15 business days | 5 to 15 business days |
|---|---|---|
| First item | £ 19.64 | £ 19.64 |
Payment methods
- Bank Wire Transfer
- Check
- Paypal
Seller's business information
BuchWeltWeit Ludwig Meier e.K.
Germany
Terms of sale
BuchWeltWeit Inh. Ludwig Meier e.K.
Inhaber: Ludwig Meier
De-Gasperi-Str. 8
51469 Bergisch Gladbach
Deutschland
Tel.: +49(0)22028659300
Fax: +49(0)22028659301
E-Mail: info@buchweltweit.de
Registergericht: Amtsgericht Köln
Registernummer: HRA 28253
Umsatzsteuer-Identifikationsnummer: DE815259907
Wir sind zur Teilnahme an einem Streitbeilegungsverfahren vor einer Verbraucherschlichtungsstelle weder verpflichtet noch bereit.
Right of withdrawal
If you are a consumer you can withdraw from the contract in accordance with the following. Consumer means any natural person who is acting for purposes which are outside his trade, business, craft or profession.
Information regarding the right of withdrawal
Statutory right to withdraw
You have the right to withdraw from this contract within 14 days without giving any reason.
The withdrawal period will expire after 14 days from the day on which you acquire, or a third party other than the carrier and indicated by you acquires, physical possession of the last good or the last lot or piece.
To exercise the right of withdrawal, electronically fill in and submit a clear statement on our website, under "My Purchases" in "My Account". We will communicate to you an acknowledgement of receipt of such a withdrawal on a durable medium (e.g. by e-mail) without delay.
To meet the withdrawal deadline, it is sufficient for you to send your communication concerning your exercise of the right of withdrawal before the withdrawal period has expired.
Effects of withdrawal
If you withdraw from this contract, we will reimburse to you all payments received from you, including the costs of delivery (except for the supplementary costs arising if you chose a type of delivery other than the least expensive type of standard delivery offered by us).
We may make a deduction from the reimbursement for loss in value of any goods supplied, if the loss is the result of unnecessary handling by you.
We will make the reimbursement without undue delay, and not later than 14 days after the day on which we are informed about your decision to withdraw from this contract.
We will make the reimbursement using the same means of payment as you used for the initial transaction, unless you have expressly agreed otherwise; in any event, you will not incur any fees as a result of such reimbursement.
We may withhold reimbursement until we have received the goods back, or you have supplied evidence of having sent back the goods, whichever is the earliest.
You shall send back the goods or hand them over to BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Germany, without undue delay and in any event not later than 14 days from the day on which you communicate your withdrawal from this contract to us. The deadline is met if you send back the goods before the period of 14 days has expired. You will have to bear the direct cost of returning the goods. You are only liable for any diminished value of the goods resulting from the handling other than what is necessary to establish the nature, characteristics and functioning of the goods.
Exceptions to the right of withdrawal
The right of withdrawal does not apply to:
- The delivery of newspapers, journals or magazines with the exception of subscription contracts; and
- The supply of digital content which is not supplied on a tangible medium (e.g. on a CD or DVD) if you accepted when you placed your order that we could start to deliver it, and that you could not withdraw once delivery had started.
Shipping terms
Der Versand ins Ausland findet IMMER mit DHL statt. Auch nach Österreich verschicken wir nur mit DHL! Daher Standardversand == Luftpost!