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Process WAV files to report how much silence at beginning

$30-250 USD

En curso
Publicado hace más de 6 años

$30-250 USD

Pagado a la entrega
We need a program that will process WAV files in the following way: 1) Identify the presence of a new WAV file in a directory 2) Process the first 30 seconds of the file (or less if the file is less than 30 seconds in length). the 30 second parameter should be something that can be easily changed, although that value can be embedded in the code 3) From the very beginning of the recording, determine how many milliseconds of silence until the first sound on the recording 4) Report these as an output: (1) filename, (2) number of milliseconds. Write those values to a log file or other output, to be determined. The program must use a minimum of CPU processing power. We were trying to use this with a free utility and it was taking too much CPU. This is why we want to process only the first 30 seconds, but even with that, the program must operate efficiently enough that we can run this on a server that is also running other operations (specifically, call recording). When we test the program, it cannot use more than 10% of the CPU power. The deliverable must include the source code. It can be in any language our current staff supports, which include: C++, Java and PhP. I've set the price based on the assumption that this is simple and requires only specific domain knowledge of audio processing, but feel free to bid higher if you think that's required for the project.
ID del proyecto: 14725180

Información sobre el proyecto

26 propuestas
Proyecto remoto
Activo hace 7 años

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I can write a code which can parse wav audio file and prints various properties, please reply, thank you!
$99 USD en 2 días
4,9 (106 comentarios)
5,6
5,6
26 freelancers están ofertando un promedio de $167 USD por este trabajo
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hello,how are you. i read your bid carefully. i am c/c++, java/javafx, wav file expert and have full experience for 10 years. c++, java language is my top skill. i can provide most quality and high speed. if you want to success, please contact me. Then, I will give you good result to the proposals. hire me.
$155 USD en 3 días
5,0 (68 comentarios)
7,0
7,0
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Hello, I have worked with WAV before... so, I know how to read these files. So, I would read the rate of the wav (for example 44100 Hz), and then, read as few samples as necessary (to reduce overhead) Habilidades y experiencia relevante I am a guru with c, c++, and sound formats Htos propuestos $200 USD - the job When do you need it?. For windows?. I will do it with C/C++
$200 USD en 5 días
5,0 (92 comentarios)
7,1
7,1
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Hey A Java expert developer is here Sir Sir I can do this task for you in java as per your need I have good advanced expertise in java and javafx Feel Free to message me Regards Relevant Skills and Experience Java Javafx Proposed Milestones $200 USD - Initial I have few questions to ask I hope to have a converation with you soon
$200 USD en 10 días
4,9 (205 comentarios)
6,7
6,7
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I am very proficient in c and c++. I have 16 years c++ developing experience now, and have worked for more than 7 years. My work is online game developing, and mainly focus on client side, using c++ under Windows environment. I made many great projects using c++, for example, I made the tools which could convert java codes into c++ scripts, of course garbage collection included, this was very similar to a compiler, and was very complex. I also made our own mobile game using c++, I can show you the demo of client, if you like. I am very proficient in java also. I have a very good review on Freelancer.com, I never miss a project once I accept the job, you can check my review. Trust me, please let expert help you.
$150 USD en 3 días
4,8 (132 comentarios)
6,9
6,9
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I am an expert in delivering custom scripts and softwares willing to discuss further details about the project Relevant Skills and Experience proven track record on this site Proposed Milestones $111 USD - milestone
$111 USD en 3 días
4,9 (71 comentarios)
6,3
6,3
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Hello there, I'm a a low-level C and C++ R&D engineer from a consumer electronics background. Used to work for Yamaha Pro Audio in London on complex Motif synthesizers and channel mixers. Your requirement (assuming it's to be a Windows application), has many possible routes to the solution. What O/S is this to run on please?
$300 USD en 3 días
5,0 (17 comentarios)
5,6
5,6
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I would like to discuss on chat: what is the target platform, where to modify settings - GUI or file (max. scan duration, silence threshold, input directory), what is preferred output format/method. Relevant Skills and Experience I had developed a "skip intro/outro" silence addon for AIMP, the detection logic was also used in a custom audio player for Internet radio company. I write code in Delphi and Lazarus (Windows/Linux). Proposed Milestones $25 USD - Acceptance $80 USD - Delivery of tested code $50 USD - Sign off
$155 USD en 4 días
5,0 (24 comentarios)
5,6
5,6
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I'm a computer science professional with a PhD degree and extensive experience in C and C++. I've done many programming projects in C/C++ and other languages. I can do this in C++. The only nontrivial part of this job is your requirement to use no more than 10% of CPU resources, thus my quote and time estimate. Otherwise it would be very simple indeed. I own a small software engineering registered in the state of Illinois. You could pay me as an individual freelancer or as a business, whichever suits you better.
$150 USD en 3 días
4,6 (40 comentarios)
5,8
5,8
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Hi, I have a idea about how to write the program for you, but I am a Linux developer, do you mind the program run under Linux? Relevant Skills and Experience I got a similar project before, it's a voice command project for embedded Linux, if the microphone is silence, just do nothing, otherwise, active the microphone, and recognize the voice. Proposed Milestones $200 USD - complete the program 100%
$200 USD en 2 días
5,0 (10 comentarios)
5,1
5,1
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i can implement your requirement within specified cpu limit.
$120 USD en 3 días
5,0 (1 comentario)
1,1
1,1
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I have experience on Audio/Video file processing and streaming. I can do this work. Lets discuss Relevant Skills and Experience C, C++, PHP, Streaming, Proposed Milestones $333 USD - Open
$333 USD en 3 días
5,0 (2 comentarios)
0,8
0,8
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Dear Prospect Hiring Manager. Thank you for giving me a chance to bid on your project. I am a serious bidder here and I have already worked on a similar project Relevant Skills and Experience I have checked your requirements. We have right skills to work on this assignment. We are a team of professionals experienced Proposed Milestones $133 USD - kindly consider me for this work. I will give you quality work within deadline Why choose me: 1. Quality work 2. Unlimited 24*7 support. 3. Quality work within deadline
$133 USD en 3 días
0,0 (0 comentarios)
0,0
0,0
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As you have duly assessed, this application requires some basic sound processing and can be developed within the criteria stated. The application will have the following basic structure/form: - It will be developed in Java - It will have config file which is basically a text file that major application configuration such as the number of seconds to process (30 in this case), the directory to check for, how often to check the folder for new files (this is to allow for the conservation of system resources), where to save the log file(s) etc - Process wav files and output the audio files Relevant Skills and Experience I will develop the application in Java Proposed Milestones $20 USD - Understanding $50 USD - Implementation and testing $41 USD - Delivery
$111 USD en 3 días
0,0 (0 comentarios)
0,0
0,0
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i am going to make audio analyze (FFT/normalnize....) with directx api from different sources. Relevant Skills and Experience 1) directx api programming; 2) c/c++ programming; Proposed Milestones $100 USD - done
$100 USD en 10 días
0,0 (0 comentarios)
0,0
0,0
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Hi Sir, this looks like an easy job and Id be glad to help you. I propose a small C programm in addition with a configfile. The Configfile specifies: - InputFolder - Outputfile + Folder - the processing time interval, (step 2) - timeinterval to check the folder for files The C Programm checks the folder in the specified timeinterval if files are found -check the entropy in the wav file -write result to file -mark the file as processed It wont take much time for me. 3 days is a bit overestimated The C Programm is efficient and easy to code. A working alternative could be a python script. Id be delighted to work for you! Count on me! Cheers Marko
$155 USD en 3 días
0,0 (0 comentarios)
0,0
0,0
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I am really interested in your project. I can develop it in either C++ or Java. That is your choice. Or even better, in both of them, if you give me a little extra time. Stay tuned, I'm is still working on this proposal.
$166 USD en 5 días
0,0 (0 comentarios)
0,0
0,0
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Hi, in the past I worked with sound processing and this task doesn't seem difficult. But to provide accurate bid it would be good to have some examples to check how "silent" the silence is (noise). Relevant Skills and Experience I worked on audio signals processing - simple compression and recognition algorithms. Proposed Milestones $120 USD - complete program Some clarifying questions: 1. Are all files in the same format and same parameters? (WAV files can be quite different) 2. Do you need to detect silence in one of channels or in both? 3. Do you need to skip ring tones? 4. How often files come? (it's easy to limit CPU utilization, but we may not process all files in time)
$120 USD en 3 días
0,0 (0 comentarios)
0,0
0,0

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Bandera de UNITED STATES
Charlotte, United States
5,0
92
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Miembro desde sept 17, 2008

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