音频均衡器在音频系统中不但可以调节音色,而且可以用来改善功放和音箱的频率响应。初期的均衡器都是基于模拟信号的,随着数字信号处理技术的发展和普及,该技术已日益广泛地应用到了音频技术领域。目前,数字均衡技术主要应用于计算机音...音频均衡器在音频系统中不但可以调节音色,而且可以用来改善功放和音箱的频率响应。初期的均衡器都是基于模拟信号的,随着数字信号处理技术的发展和普及,该技术已日益广泛地应用到了音频技术领域。目前,数字均衡技术主要应用于计算机音频处理、媒体播放器及专业音响设备等。本文通过MATLAB工具设计了一种数字音频均衡器,该均衡器设计新颖,使用灵活。并用Ver i l og实现硬件,并在FPGA上测试了音频均衡器的效果。展开更多
In analog audio equalizer, the filters are constructed by op-amplifiers and discrete components. Being influenced by its discrete capabilities, audio equalizer has many disadvantages. Meanwhile, pure digital audio equ...In analog audio equalizer, the filters are constructed by op-amplifiers and discrete components. Being influenced by its discrete capabilities, audio equalizer has many disadvantages. Meanwhile, pure digital audio equalizer has got better performance and stability, but its cost and price are too high. So digital audio equalizer only has its application in upscale domain. A new design method for audio equalizer is proposed, which attempts to design and realize a high precision and high SNR (signal noise ratio) digital audio equalizer system based on field programmable analog array (FPAA) and micro-controller unit. This design confirms that design speed and performance will be greatly enhanced when FPAA technology is applied to analog design domain.展开更多
文摘音频均衡器在音频系统中不但可以调节音色,而且可以用来改善功放和音箱的频率响应。初期的均衡器都是基于模拟信号的,随着数字信号处理技术的发展和普及,该技术已日益广泛地应用到了音频技术领域。目前,数字均衡技术主要应用于计算机音频处理、媒体播放器及专业音响设备等。本文通过MATLAB工具设计了一种数字音频均衡器,该均衡器设计新颖,使用灵活。并用Ver i l og实现硬件,并在FPGA上测试了音频均衡器的效果。
文摘In analog audio equalizer, the filters are constructed by op-amplifiers and discrete components. Being influenced by its discrete capabilities, audio equalizer has many disadvantages. Meanwhile, pure digital audio equalizer has got better performance and stability, but its cost and price are too high. So digital audio equalizer only has its application in upscale domain. A new design method for audio equalizer is proposed, which attempts to design and realize a high precision and high SNR (signal noise ratio) digital audio equalizer system based on field programmable analog array (FPAA) and micro-controller unit. This design confirms that design speed and performance will be greatly enhanced when FPAA technology is applied to analog design domain.
