基于单片机的变声器设计与实现大学论文

基于单片机的变声器设计与实现Design and implementation of voice changer based on MCU摘 要在今日的音频处理应用中，应用范围从一个简单的循环到预置的播放速率和更长的播放时间，给了人们一个更好的音频体验环境。在理想的设想中，将时间缩小或扩大和对音调的调制处理，应该还是有进展的空间的，以此来提供更好的声音质量或更加快的处理速度。应该令音流中的时间顺序不发生改变能够正常工作。变声器的原理是将输入声音的频率变换，并且将声音的声调，音色都进行变换，令最后播放出来的声音和原来的声音相比，是有很明显人耳即可分别出来的区别的。变声器是通过对声音的声调还有音色双重的变换，来实现输出声音的变化。变声器的语音转换是通过将从外界获得的音频，将这些音频通过模数转换，送到单片机，经过单片机处理后，将输入的声调或音色加以改变，接着通过数模转换，并利用放大电路，将变化后的音频输出。关键词：变声器；变声基本原理；语音Design and implementation of voice changer based on MCUAbstract In today's audio processing applications, the range of applications has been from a simple loop to the preset playback speed and long time to give people a better audio experience. Ideally, the time compression / expansion and modulation processing should is scalable to provide better audio quality or faster processing speed. The timing of events in the audio stream should be maintained.The principle of voice changer is by changing the frequency of input voice, and change the sound of the tone, tone, voice output are different with the original sound in the sense. Is the use of double voice changer changes to voice sound and tone, realize the change of sound output.Voice changer through receiving external input audio. The collected audio, by an analog digital conversion, sent to the microcontroller processing, change input tone or tone, through digital to analog conversion and amplifying circuit, changed the voice audio output.Key Words：Voice Changer；The bas...