关键词:信号发生器,directsound,信号数据,vc++,音频
ABSTRACT
Along with the quickly development of electronic technology, the technology of signal generator design has got great raising ,has gotten quick development, not only have realized firmly form melt , and have arisen the new kind instruments such as some of letter raw wares, sweep signal generator and the signal generator of programmed control, major working property has got maximum raising.
This paper mainly introduces a new multifunctional audio signal generator which is designed by software. Multifunctional audio signal generator can generate various audio signals under the control of the computer, such as sine wave、white noise、pink noise signals and signals defined by user. It uses the principle of digital synthesis to generate signal, frequency, and the amplitude is very stable and free from the external hardware, so it can get the ideal digital signal. The software have a perfect interface, the user can get an ideal signal through simple operation on the computer keyboard and mouse. The software also can get multiple waveform signals, and corresponding graphics can be shown on the screen. Meanwhile, according to the different signals, frequency, amplitude, response time and the phase can be input. The software through the computer sound card can achieve vocal function, and it has the characteristics of reliability, full range of functions, easy to generate signal.
Keywords: Signal generator,Directsound,Signal data,Vc++,Audio