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Random Number Generation and Sampling Methods

Random Number Generation and Sampling Methods

This is an open-source document; for an updated version, see the source code or its rendering on GitHub. You can send comments on this document either on CodeProject or on the GitHub issues page.

Duplicate songs detector via audio fingerprinting

Duplicate songs detector via audio fingerprinting

As a software engineer, I was always interested in how a computer can be taught to behave intelligently, at least on some simple tasks that we can easily solve within frames of seconds. One of them applies to audio recognition, which in recent years has been analyzed thoroughly. For this reason, in this article, you will be introduced to one of the complex tasks which arose in the field of computer science: the efficient comparison and recognition of analog signals in digital format. As an example, consider an audio signal Ψ1, which you would like to compare to another Ψ2 in order to see if they both are coming from the same song or audio object. Any person could cope with this assignment with no problem at all, but computers unfortunately are not that intuitively “smart”. The difficulty lies in the fact that each of the signals might have distinct digitized formats, thus making their binary signatures totally opposite (resulting in an obsolete byte-by-byte comparison). The dissimilarity may also result because of the combination of variant internal characteristics of the same audio format (bit rate, sampling rate, number of channels (mono, stereo, etc.)). Even if you proceed with the conversion of the files to some predefined specifications (e.g., 44100 Hz, stereo, WAVE PCM format), you still might bump into the problem of having different binary representations because of the possible time misalignment, noise, distortion, or “loudness levels” for the same song (“loudness” technically defined as amplitude level).

Computer Temperatures, Fan Speeds, etc.

Computer Temperatures, Fan Speeds, etc.

I have a homebuilt desktop with an ASUS P6T motherboard. It’s about 7-8 years old, but still quite powerful and functions beautifully. ASUS originally provided PC Probe II to monitor temperatures and fan speeds, but stopped supporting it for the P6T when Windows 10 came out. And since then, I’ve been operating without a satisfactory sensor app. Unfortunately, the 3rd party sensor apps available are a bit quirky, or non-intuitive, or can’t be configured the way I’d like. Then again, perhaps I’m just overly picky.

C++ Object Relational Mapping (ORM)- Eating the Bun – Part 1 of N

C++ Object Relational Mapping (ORM)- Eating the Bun – Part 1 of N

Object Relational Mapping is the process of mapping data types between an object-oriented language as C++ to a relational type system as SQL. So what is the challenge? C++ has different types of primitive types as,intchar, float, double and variations of that. So it’s a real challenge to map all these to an actual SQL type. There may be or may not be an exact type that is similar to the C++ types. Say for,float C++ and SQL may support a different kind of standards too. So there are different tools to do this job. There are a lot of matured libraries too out there in the market. ODB is one that is really nice.

IntelliPort

IntelliPort

As you already know, Microsoft has dropped the development of HyperTerminal starting with Windows 7. IntelliPort is a program that you can use to connect to other computers, using either your null modem cable or Ethernet connection. IntelliPort records the messages passed to and from the computer on the other end of your connection. Therefore, it can serve as a valuable troubleshooting tool when setting up and using your modem. To make sure that your modem is connected properly or to view your modem’s settings, you can send commands through IntelliPort and check the results. IntelliPort has scroll functionality that allows you to look at received text that has scrolled off the screen. You can use IntelliPort to transfer large files from a computer onto your portable computer using a serial port rather than going through the process of setting up your portable computer on a network. IntelliPort is designed to be an easy-to-use tool and is not meant to replace other full-feature tools available on the market. You can use IntelliPort to perform the specific tasks described above, but do not attempt to use IntelliPort for more complex communication needs.

Motorcycle Signal Lights

Motorcycle Signal Lights

So a few years ago, I started building custom motorcycles in my free time as a way to relax after work. The thing about custom bikes is that they are usually in someway original in looks. The first two bikes built did have an Arduino running the turn signals and working with the brake lights, but this one I wanted to be different. You can see the build here if you are curious.

TorpedoSync

TorpedoSync

 They say that “necessity is the mother of invention”, well necessity and sometimes an itch to do the same yourself. This is how TorpedoSync came about, from the use of other software to sync “My Documents” across  my machines and finding them troubling. Hence the immortal cry “I can do better!”.

I start out by using bitsync which then became resilio sync (a free-mium product) which I liked at first but then became a real memory and disk space hog.

After searching a lot, I came across syncthing which is open source and written in go, which I found seemed to be connecting to the internet and was not as nice to use as resilio.

At this point I gave up and decided to write my own.

IntelliTask

IntelliTask

Task Manager shows you the programs, processes, and services that are currently running on your computer. You can use Task Manager to monitor your computer’s performance or to close a program that is not responding.

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