WAV to plain ASCII String Project -

Budget $100 - $1000 USD
Bids 5
Average Bid $846

We are looking for a programmer to develop a module to be incorporated in our existing system. Basically, we need that this module recognizes a WAV file consisting of spoken alphanumeric codes, and returns a plain ASCII string. We require this module as an unmanaged Win32 DLL with the fewest possible dependencies, highly efficient, thread-safe, no memory leaks, etc. We code in C/C++ so they have preference, but anything callable from these two languages will be also considered. You are free to use any 3rd-party library as long as it also complies with our requirements. Some details: Each WAV file will include a single (and short) alphanumeric code. Each code is spelled out, character by character, by a human. ? There will be ambient noise in the audio. Precision of 70% or higher is required**. A response time under 1 second will be enough. **About precision: just to be clear, we mean 70% of successfully recognized codes after hundreds.

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Bids on this Project

  • vedenev Profile Picture


    Shahtersk,  Russian Federation

    Education: 1998 - 2004 Novosibirsk State University, Physical Department 2004 - 2007 post-graduate course in Budker Institute of Nuclear Physics Programming languages and CADs: Java, C#, C++, Matlab, LabView, Comsol, AutoCAD Job experience: 2007 - work as freelance-programmer (remotely via internet). Experienced in: digital signal processing, linear filters theory, Fourier transform, Genetic algorithm, k-means clustering, dimension reduction with PCA, RBM, numerical solution of differential equations, work with sound, note frequency formula, sound synthesis. Made big projects: Java: Particle Swarm Optimization (console application), sound visualizations as droplets drop on water surface (GUI) C# : piano notes recognition from its sound (GUI) ?++ : object position detection from times delays of sound arrival to microphones (console application), chords recognition from its sound (console application) Matlab: Traffic jams simulation, quaternion visualization, handwritten digits recognition using neural networks, genetic programming, preys-predators task simulation Some projects described here: http://simulations.narod.ru/ 09.2004 - 2007, laboratory assistant. Take part in EC-40 cooler commission for CERN. Wrote control program in LabView. The program works with ADAM block via RS-232 port. At EC-40 I learn space charge in collector. Take part in turbogenerator development for COSY. Efficiency factor was measured for the turbogenerator. I got experience in woirk with pressured gas. Automatic regulator for gas flow was developed. It was system with comparators. . I learned BINP production. I made discharger for section test. I gained experience in work with high pressure equipment and high voltage equipment up to 100 kV. 09.2002 - 06.2004 I moved to chair of accelerator physics to Parkhomchuk's laboratory. This laboratory in BINP makes electron coolers for sale to accelerator centers abroad. I took part in Eh-35 cooler commission. Learned work with Tektronix digital oscilloscope, data processing in MathCAD, graphs drawing in ORIGIN. Then Eh-300 cooler commission began. I took an active part in it. I learned cooler's work. Cooler has power supplies and measure devices that controlled with computer. I made digital data processing in MathCAD. The task was to investigate secondary electrons moving. I took part in electron cooler for COSY design English level: English language learning at school, in university, in institute in postgraduate course. There were 3 weeks work in Germany and 1 month work in Sweden. Permanent communication with foreign emploers. Often see documentary films in English.

    PHP, C Programming, Java, and .NET

  • k0der Profile Picture


    khulna,  Bangladesh

    we have a little company you can offer us any time we can proved our skill in lower rate also quality full work ty

    PHP, ASP, C Programming, and Java

  • spcinc Profile Picture


    Dalian,  China

    Over 10 years, working on C, C++ programming area. Possessed strong theory of Algorithm, Software Engineering, and Project Management. Main project is IPTV Service. Worked on Computer Graphics area for 3 years. Developed 50+ iOS and Android applications since 2009. Built shopping, auction sites with Symfony, CakePHP and Zend framework. I have strong skills of PHP, HTML, CSS, JSON Main areas worked on: Video Production, Mobile Application, Game Development, Web Development Main skills: Objective C, OpenGL, Cocos2D, Unity3D, OpenCV, PHP, HTML, JAVA Products: -RealEstate: iPhone, Android app, back-end website, REST API -Mobile Game: Script Parsing Engine, Great Performance, Awesome Graphics&Audio Effect -Other Mobile Apps: Social, Health, Shopping apps. -Auction Site: NDT Website (for selling used construction machines.) -Shopping site: Developed based on Symfony PHP framework, it's for selling books. Strong point: The quality is very good, always provide stable programs.

    PHP, Perl, ASP, and C Programming

  • OvchinnikovAl Profile Picture


    Tomsk,  Russian Federation

    Alexey Ovchinnikov ## Area of Expertise C, C++, VC++ 6.0 /MFC/COM/ATL, VC++, Qt4, wxWidgets, 7.0/.NET,Win NT/2000/XP/vista/win7, linux

    C Programming, Visual Basic, .NET, and Script Install

  • waheni Profile Picture


    tunis,  Tunisia

    Software Engineer

    C Programming, Java, Python, and Script Install