Write an Android application

The main idea of this project is to create a software that reproduce an ultrasonic sound which can be read and interpret it by a mobile device.

The project has 2 principal steps; at the moment we only want the first one waiting for the client’s feedback.

The first step consists in:

• A way to create an ultrasonic sound in a sound format (.mp3, .wav, etc…) in a form way. It can be HTML or similar.

o Example: we introduce the sentence Hello World and it’s transformed to an ultrasonic sound and save it on the hard disk.

• Create an API which can be introduced in an app (at the moment only Android) where the ultrasonic sound is interpreted.

o The app has to maintain the mobile device microphone open. At the moment in foreground while the app is running in an Android device.

• When the app receives and interprets the ultrasonic sound, it has to send this information to a Database.

o The database, at the moment, only has to have a table with 3 rows: ID, time when the message has sent and the sentence.


• The sound has to have a 0.20 to 2 seconds length.

• The sound has to be inaudible.

• You are free to use any database but we like more the SQL.

• We would like to have a postmortem document where you explain the steps you did and the main problems you found if you want.

• We would appreciate a commented and clear code.

• We will count on you for the second step (more extended) if we like your result.

Kemahiran: Android, HTML, Javascript, Mobile App Development, SQL

Lihat lebih lanjut: Write-Android-application-13162149, https://www.freelancer.com/projects/Mobile-Phone/Write-Android-application-for-post/, Write Android application similar temple run, php/Write-Android-application-11839450, freelancer write android application, write-android-application-project, write-android-application-post-product/, write-android-application-for-sms-project, write-android-application-for-product/, Write-Android-application, write android application , write android application project, write android application 2, write android application --2, write android application creating user form

Tentang Majikan:
( 0 ulasan ) Spain

ID Projek: #15178166

102 freelancers are bidding on average €2419 for this job


I have mobile app( Android, IOS) , php and backend skill. I have experience with Social app, Dating app, Chatting app, Video Streamming, IPTV app, Uber style App , Restaurant/Food Deliver app Relevant Skills and Exper Lagi

€2368 EUR dalam 30 hari
(279 Ulasan)

Dear Sir, I have read everything & understood the scope of this project. I have also discussed with my technical team lead to make sure that there are no issues, so we are good to go & ready to start this project im Lagi

€2777 EUR dalam 60 hari
(70 Ulasan)

Hello, An average Android user spends 2 hours and 15 minutes per day on apps. Android has 2 billion monthly active users with 87.5% global mobile operating system market share and more than 4000 different types of Lagi

€1500 EUR dalam 30 hari
(71 Ulasan)

CLEAN AND FAST SENIOR MOBILE DEVELOPER!!! Hello, Dear. I'm developing Mobile app to the order of clients for 6+ years. I have rich experience in development of apps. These are apps that I made. [url removed, login to view] Lagi

€2500 EUR dalam 30 hari
(83 Ulasan)

Hi, I'm a talented developer for iOS, Android and have 8 years full time development experience. I have already developed a great number of various applications, namely on-demand services, location-based apps, Lagi

€3000 EUR dalam 30 hari
(91 Ulasan)

******* Full Time Mobile and backend developer for 7 years. ****** Dear ! [url removed, login to view] As you see in my profile, I have successfully delivered 180+ Android/ iOS apps for cli Lagi

€2368 EUR dalam 30 hari
(117 Ulasan)

-----------------Hello----------------- ***Let's built successful project together*** [url removed, login to view] This is my [url removed, login to view] profile and please check my profile. As you see, I Lagi

€2500 EUR dalam 30 hari
(73 Ulasan)

Hi, Nice to meet you. Create ultrasonic sound file and communicating mobile app and database is no problem for me. Because I have made the app similar with this before. Please check my profile. Relevant Skills and Exp Lagi

€2500 EUR dalam 30 hari
(140 Ulasan)

Hi, I've checked your requirements and I am much interested to assist you on the development of your Project with fulfilling all of the required functioning very accurately and elegantly. Relevant Skills and Experien Lagi

€2500 EUR dalam 30 hari
(117 Ulasan)

Let's go together for your project. How are you today? I am a full stack developer who has over 5 years experience in app development. I will always deliver you ERROR-FREE and OUTSTANDING quality project in a ti Lagi

€2500 EUR dalam 30 hari
(38 Ulasan)

How are you today? I have checked your project description in carefully. I am sure i can do your project within your timeline and budget. I am a full time mobile developer with 5+ good experience I can start your Lagi

€2368 EUR dalam 30 hari
(89 Ulasan)

How are you? I am a senior developer with extensive experience in building high quality Mobile apps, Games & Web. When I work on a project, I strive for excellence and 100% client satisfaction. Having an idea Lagi

€2500 EUR dalam 30 hari
(38 Ulasan)

Hello, I have 6 years of experienced on mobile application and development web services I have gone through your project requirement specification and as per my previous experience with this I am capable to do this Lagi

€2500 EUR dalam 30 hari
(127 Ulasan)
€2500 EUR dalam 30 hari
(74 Ulasan)

How are you? I am a Mobile & Web developer who have 10 years experience of program develop and 5 + years in mobile. I think my skills are enough for this project, I am interested in your idea . so I want to chat Lagi

€2250 EUR dalam 30 hari
(79 Ulasan)

Hello, Below is the brief of project scope ►►Project Title- -Android Mobile Application Development. Relevant Skills and Experience Doctar app [url removed, login to view] Snow and Mow-- [url removed, login to view] Lagi

€5000 EUR dalam 50 hari
(25 Ulasan)

Please have a look at our portfolio for Mobile App and Unity Game based projects: Relevant Skills and Experience [url removed, login to view] [url removed, login to view] Lagi

€1500 EUR dalam 30 hari
(124 Ulasan)

Dear Employer, Greetings from fortranPRO. I've worked on similar projects to what you are looking for, and I am confident that I can exceed your expectations. Relevant Skills and Experience • [url removed, login to view] Lagi

€1800 EUR dalam 30 hari
(346 Ulasan)

Hello! I am Ish & I represent the Mobile development team at Daffodil Software. I've precisely gone through your job description and understood that you wish to develop a software that reproduces an ultrasonic sound Lagi

€3000 EUR dalam 30 hari
(26 Ulasan)

Dear Client,Hope you doing well. I have gone through your requirement and as per my previous work experience i am ready to start work immediately on your project. yes i am very much expertise with Java script,XC Lagi

€2000 EUR dalam 30 hari
(62 Ulasan)