![]() ![]() This is due to the various improvements offered over traditional analogue voice radio. Digital radio voice communications are becoming more commonly used in the radio spectrum. For those that want to evaluate products in a general way, the software can tell you some of the characteristics such as bandwidth, dynamic range, and frequency response curve. The RTL-SDR software defined radio combined with SDRSharp and a program called 'digital speech decoder' (DSD) can be used as a radio scanner to easily and cheaply listen to unencrypted digital radio voice conversations. Why use an audio spectrum analyzer? For those of you that have done video installations, would you install a camera and lens without a monitor to see what you are doing? Why would you do an audio installation without seeing what you are doing? The analyzer gives you an inexpensive method to install audio systems (microphones, amplifiers, equalizers, concealments, etc) using a laptop computer, internal or external sound card, and the software. If you require a complicated engineering program that costs hundreds - thousands of dollars, this is not the program for you. All you will need to do is download the 7zip software, install that and decompress the SDRangel package. ![]() Should your computer be a 32 bit based (x86) machine running a 32 bit OS, like WinXP. The program provides the user a audio spectrum analyzer that is powerful and simple to use without complicated menus and setup requirements. This article will help on how to set it up under Windows and to decode digital voice modes with an inexpensive SDR dongle. The DTMF Decoder software is an essential tool for audio technicians, police officers, forensic technicians, countermeasures technicians, and other audio related fields. Audio CD to MP3 Maker is an extremely easy to use yet powerful CD to MP3 converter (also called CD ripper) and WAV to MP3 decoder for Windows 9X/NT/Me/2000/XP. ![]()
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