
Avoin
Julkaistu
•
Päättyy 3 päivän päästä
I’m deep into a research project on how ultrasonic waves behave as they travel long distances through air, particularly in the context of parametric-array loudspeakers. My immediate need is a rigorous analysis—numerical or analytical—of the governing physics so I can pin down the key factors that limit or enhance range. You would help me do three things: 1. Derive or validate a propagation model that accurately predicts attenuation, beam widening, and nonlinear effects above 40 kHz. Whether you prefer classic Westervelt equations, k-Wave FDTD, or COMSOL multiphysics is up to you as long as the assumptions and boundary conditions are clearly stated. 2. Compare the model against at least one real-world data set (published or your own lab measurements) so I can see how closely theory tracks practice. 3. Document the findings in a concise technical memo that I can build on for later optimisation work—equations, simulation settings, plots, and a paragraph on next-step recommendations. Acceptance criteria • Model equations and parameters are reproducible. • Simulations run without errors on a standard desktop PC. • The memo explains any discrepancies between model and data to within ±2 dB. If you have direct experience with parametric speakers or long-range ultrasonic sensing, that will make integration much faster, but strong acoustics fundamentals matter most. Looking forward to seeing how you’d tackle the problem.
Projektin tunnus (ID): 40273242
28 ehdotukset
Avoinna tarjouksille
Etäprojekti
Aktiivinen 2 päivää sitten
Aseta budjettisi ja aikataulu
Saa maksu työstäsi
Kuvaile ehdotustasi
Rekisteröinti ja töihin tarjoaminen on ilmaista
28 freelancerit tarjoavat keskimäärin $28 USD/tunti tätä projektia

Hello, As a seasoned team, Live Experts possesses a wealth of relevant experience to effectively solve your ultrasonic air propagation study with precision and the utmost professionalism. Our strong suit in acoustics, alongside our extensive skills in data analysis, physics, research, signal processing, and technical writing make us an exceptional fit for your project as we combine not only the know-how but deep understanding of the subject matter needed. From k-Wave FDTD to COMSOL multiphysics and classical Westervelt equations, we’ve acquired expertise in a myriad of numerical analysis solutions that can be utilized to derive or validate an accurate propagation model for you. We'll ensure no stone is left unturned as we execute the simulations required using standard desktop PC. Furthermore, our adeptness in software development employing Python, MATLAB and Mathematica and proficiency with integrated platforms like COMSOL could be key attributes to bring about a successful solution to your project. Not only will we run the necessary simulations timely without errors, but we will also thoroughly compare the model against real-world data for viability purposes. With equal importance on providing reproducible model equations and parameters as well as ensuring any discrepancies between model data are within ±2 dB alongside recommendations for next steps in a comprehensive technical memo. All with an unwavering commitment to deliveri Thanks!
$50 USD 1292 päivässä
6,7
6,7

Affordable, Early Delivery. ★★★★★★★★★★★★★★I hold a Masters degree which gives me the requisite background to handle writing from various subjects. I am a highly committed person towards my work. You can rely on QualityXenter for quality and consistency in writing. We never violate copyright rules. I have vast amount of experience in this industry since I am working from 2015 as a professional writer. I provide many modifications till to get your satisfactions. I have access to enough journals to use in your research project. I always produce quality work at VERY LOW RATES so, don't worry if you have a low budget for your work, I will be very happy to make a new client like you. I am producing quality work for my clients including ARTICLE WRITING, REPORT WRITING, ESSAY WRITING, RESEARCH PAPERS, BUSINESS PLAN, TECHNICAL WRITING, MATLAB, THESIS, ACCOUNTING & FINANCE work ETC. Go through my profile link https://www.freelancer.com/u/qualityxenter
$10 USD 1 päivässä
6,0
6,0

I am a professional researcher and writer with over 7+ years of experience. My work focuses on advising, tutoring, helping, and supporting Master's and Doctoral dissertations in Human and Social Sciences. This type of coach allows me to exchange opinions and suggestions with my students. Success in academics starts with top-quality research I can provide you “SUPREME QUALITY WORK” within your “GIVEN DEADLINE” with “PERFECT GRAMMAR” and “ZERO PLAGIARISM”. I have 100+ "EXCELLENT REVIEWS" which are a guarantee for my best Quality. I also have extensive experience in Qualitative Data Analysis: Phenomenology, Grounded Theory, Content and Thematic Analyses, Oral History, and Narratives are my specialties. Codification and categorization processes and hermeneutic analysis and interpretation are fundamental to getting data meaning and obtaining research significance. Please see my profile and portfolio to assess my quality. https://www.freelancer.com/u/ExpertsPen?projectId=39964301&ref_bid_id=470748240&ref_project_id=39964301
$25 USD 40 päivässä
5,7
5,7

With over a decade of experience in academic research and technical writing, I am adept at navigating complex scientific problems and delivering concise, actionable findings. My double Q advantage (Quick & Quality) guarantees that I will deliver on this project promptly while maintaining the highest standards in my work. My skillset aligns perfectly with your project needs; I excel in data analysis, research, and technical writing, precisely the knowledge your study urgently demands. Although I haven't directly tackled parametric speakers or long-range ultrasonic sensing, my profound grasp of acoustics fundamentals equips me to navigate these subjects expertly. I'm accustomed to using rigorous models - whether the Westervelt equations or other tools like k-Wave FDTD or COMSOL Multiphysics - to effectively evaluate phenomena.
$30 USD 40 päivässä
5,9
5,9

Hi, I can assist you in crafting a detailed and accurate analysis of ultrasonic wave propagation for parametric-array loudspeakers. I have strong experience in acoustics and numerical modeling, and I can help derive or validate propagation models that account for attenuation, beam widening, and nonlinear effects above 40 kHz using methods like Westervelt equations or FDTD simulations. I can also compare the model results with published or experimental data to ensure predictions match reality within ±2 dB and document all findings in a clear technical memo with equations, plots, and recommendations for optimization. To better tailor the work, could you share whether you have specific experimental data you’d like me to use for validation? Also, do you prefer an analytical approach, a numerical simulation, or a combination of both for the propagation modeling? Thanks
$30 USD 40 päivässä
6,4
6,4

With over 10 years of experience in web and mobile development, including expertise in blockchain and AI/ML, I understand the intricacies of your Ultrasonic Air Propagation Study. Your project requires deriving a propagation model, validating it with real-world data, and documenting findings for optimization. In the realm of AI/ML development, I have tackled complex problems like yours with precision and accuracy. I have successfully integrated data-driven features into projects, ensuring enhanced user experiences. My experience in blockchain development also lends itself well to the rigorous analysis needed for your study. I have a track record of delivering tailored solutions in niche domains like HealthTech and FinTech, which exhibit my ability to understand and address specific challenges effectively. I am eager to collaborate and bring my expertise to your project, ensuring the model equations are reproducible and simulations run seamlessly. Let's discuss how we can work together to achieve your goals.
$40 USD 15 päivässä
5,2
5,2

As an experienced and seasoned freelancer, I bring a unique blend of skills to the table that perfectly aligns with your project's needs. With over nine years under my belt in research and technical writing, I have a proven track record of delivering accurate and high-quality results. I hold a strong grasp on acoustics fundamentals and have written and published articles on related topics in reputable databases such as ScienceDirect and Scopus. Moreover, as an adept problem-solver, I am adept at using various mathematical and numerical models including Westervelt equations, k-Wave FDTD, and COMSOL multiphysics. This expertise coupled with my knack for thorough analysis and interpretation of data will ensure that not only will I deliver a reproducible propagation model, but also will meaningfully compare it against real-world data making sure to flag any discrepancies within the acceptable ±2 dB range. Furthermore, you can be rest assured that my deliverable is not limited to mere technical proficiency but includes creating concise technical memos that effectively convey the findings for future optimization work. My meticulousness ensures that my projects run without any errors or delays
$10 USD 40 päivässä
5,1
5,1

Hello, With over 7 years of experience in Research and Technical Writing, I have carefully reviewed your project requirements. To address the Ultrasonic Air Propagation Study, I propose to: 1. Develop a comprehensive propagation model focusing on attenuation, beam widening, and nonlinear effects above 40 kHz using a suitable method like k-Wave FDTD or COMSOL multiphysics. 2. Validate the model against real-world data to ensure accuracy and reliability. 3. Compile the findings into a detailed technical memo with equations, simulation settings, plots, and recommendations for further optimization. I believe that my expertise in research methodologies and technical analysis align well with the demands of this project. I am eager to discuss the specifics further in chat to ensure that the deliverables meet your expectations. You can visit my Profile at https://www.freelancer.com/u/HiraMahmood4072 Thank you.
$22 USD 40 päivässä
5,2
5,2

Dear Sir/Madam, I have good experience in acoustics and wave propagation modeling, including high-frequency ultrasonic analysis. I am confident I can develop a clear and reproducible model to study attenuation, beam spreading, and nonlinear effects above 40 kHz. I will clearly define all equations, assumptions, and simulation parameters so everything runs smoothly on a standard desktop. Let’s connect in the chatbox to discuss the project further, including the budget and timeline. To know more about my experience, let's talk in a freelancer call, and I can share more details and sample works in the chatbox. I am ready to work with you, please connect in the chatbox for further discussions. Thank You. Dr. Divya.
$10 USD 40 päivässä
4,8
4,8

As an experienced engineering professional with a keen interest in data analysis and research, my skills and expertise align perfectly with your project on ultrasonic air propagation study. My strong acoustics fundamentals combined with my extensive knowledge in modeling, simulation, and analysis will enable me to provide accurate, optimized, and research-level solutions. Whether using the Westervelt equations, FDTD or COMSOL multiphysics, I will ensure I derive or validate a precise model that predicts attenuation, beam widening, and nonlinear effects above 40 kHz. With my proficiency in MATLAB/Simulink Modeling & Simulation as well as CFD Simulation among others, I can ensure that your simulations will run without errors on a standard desktop PC while producing reliable results. I believe in working meticulously and generating reproducible model equations and parameters. My past experience has emphasized on clean, optimized CAD models with structured technical reports- precisely what you seek to achieve in this project. More importantly, I appreciate the impact of good documentation for future studies. I assure you that the concise technical memo which I produce will include comprehensive details such as equations, simulation settings, accurate plots as well as a paragraph on next-step recommendations. My end goal is to provide you with a foundation upon which to build future optimization work ensuring a thorough understanding of the data evaluated.
$50 USD 40 päivässä
3,6
3,6

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Expert Mechanical design Engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: FEA analysis CFD analysis Thermal analysis Structural analysis HVAC and Heat load calculation We are proficient in using following software’s: AUTOCAD SOLIDWORKS ABAQUS ANSYS Fluent MATLAB/SIMULINK COMSOL Multiphysics CATIA FUSION360 We have good command over REPORT WRITING, we can show you many samples of our previous reports. We can discuss further details in the message box.
$30 USD 40 päivässä
3,4
3,4

I’ve worked on ultrasonic propagation and parametric-array simulations before and understand your need to model attenuation, beam spreading, and nonlinear effects above 40 kHz. I see you want both a validated analytical or numerical model and a concise technical memo. I have experience with FDTD modeling, COMSOL multiphysics, and analytical approaches for ultrasonic air propagation. I can set clear assumptions, run reproducible simulations on a standard desktop, and compare results against published or measured datasets. I’m happy to schedule a quick call to discuss your objectives and approach. Regards, Blaze Nicholas
$30 USD 40 päivässä
0,8
0,8

Hi there, I’m excited about your project on ultrasonic wave propagation, as it aligns perfectly with my background in acoustical engineering and data analysis. With extensive experience in deriving propagation models, I can provide a thorough analysis that addresses your needs for predicting attenuation, beam widening, and non-linear effects. Whether using the classic Westervelt equations or advanced methods like k-Wave and COMSOL, I'll ensure that all assumptions and boundary conditions are clear. In my previous projects, I have successfully compared theoretical models with real-world datasets, providing insights that bridge the gap between theory and practice. Additionally, I will document the findings in a detailed technical memo, making sure the findings are reproducible and user-friendly for your future work. To move forward efficiently, I encourage you to message me right away to discuss any specifics or preferences you may have regarding the methodologies. What specific real-world datasets do you have in mind for comparison, or would you prefer I use published data? Best regards,
$30 USD 17 päivässä
0,0
0,0

Hey , I just finished reading the job description and I see you are looking for someone experienced in Technical Documentation, Acoustical Engineering, Physics, Physics Tutoring, Signal Processing, Data Analysis, Research and Technical Writing. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: 1. These are all the requirements? If not, Please share more detailed requirements. 2. Do you currently have anything done for the job or it has to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? 1. I have done more than 250 major projects. 2. I have not received a single bad feedback since the last 5-6 years. 3. You will find 5 star feedback on the last 100+ major projects which shows my clients are happy with my work. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further.
$20 USD 22 päivässä
0,0
0,0

Hey! I can help with your project. I have strong acoustics knowledge. I understand ultrasonic waves well. I can derive a solid propagation model. Using Westervelt equations sounds good. I can validate against real-world data too. I’ll ensure clear assumptions and boundary conditions. I’ll document everything in a memo. It will include equations and simulation settings. I’ll also provide plots and recommendations. I’ll make sure the model is reproducible. Simulations will run on standard PCs. I’ll explain any discrepancies clearly. Let’s tackle this challenge together. I’m ready to dive in! Cheers! Looking forward to your response.
$30 USD 40 päivässä
0,0
0,0

I am Rashidab , I am ready to start work right now. With strong acoustics and nonlinear wave modeling experience, I can derive and validate a propagation model for ultrasonic waves above 40 kHz using Westervelt based theory or FDTD simulation. I will compare results with published data, ensure reproducible parameters, and deliver a concise technical memo with equations, plots, and clear recommendations within the required accuracy.
$30 USD 40 päivässä
0,0
0,0

Hello, I hope you are doing well, Budget: 450 USD Timeline: 7 days I’ll deliver a rigorous ultrasonic propagation analysis for parametric-array loudspeakers (>40 kHz) covering: Propagation model: Westervelt equation (nonlinear) + beam spreading/attenuation, with clear assumptions and boundary conditions. Can implement via k-Wave FDTD or analytical solution as needed. Model validation: Compare against published datasets (e.g., Bennett/Norvell parametric speaker measurements or NOAA ultrasonic propagation studies). Technical memo: Complete documentation with equations, simulation parameters, plots showing attenuation vs distance, beam patterns, and ±2 dB validation results. Deliverables: Reproducible model code (Python/MATLAB) that runs on standard desktop Concise technical report with plots and next-step recommendations Parameter sensitivity analysis for range optimisation I have acoustics simulation experience and can hit your technical requirements precisely. Ready to discuss model approach before starting.
$15 USD 40 päivässä
0,0
0,0

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in Research, Technical Writing, Physics, Acoustical Engineering, Signal Processing, Data Analysis, Technical Documentation, Physics Tutoring and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
$25 USD 5 päivässä
0,0
0,0

Hello, I am very interested in working on this project and delivering high-quality results. I have experience handling similar tasks and always ensure accuracy, efficiency, and meeting deadlines. I am available to work up to 40 hours per week at a rate of $20 per hour. I value clear communication and provide regular updates to ensure the project runs smoothly. My goal is to exceed your expectations and build a long-term professional relationship. I would be happy to discuss the details and get started right away. Best regards.
$30 USD 40 päivässä
0,0
0,0

I am a university student studying civil engineering and this project fall within my proximity in physics study therefore i am excited to take on this task which poses an exciting challenge
$15 USD 40 päivässä
0,0
0,0

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