论文部分内容阅读
BL0305是应用于音响领域的数字化的模拟信号延迟集成电路,它采用了通讯领域语音信号的自适应增量调制/解调技术。把音乐讯号先调制成串行的二进数字位流,然后使这二进制数字位流流经一个先进先出的存储器。在存储器的流出端把二进制数字位流解调恢复成原来的波形。采用这种数字技术的音响延迟电路在合适的采样频率下,可以比过去模拟BBD的延迟电路失真小,频带宽,集成度高(单片即成一系统)、生产方便,而成本基本与BBD产品相当。
The BL0305 is a digital analogue signal delay integrated circuit used in the audio field. It uses an adaptive delta modulation / demodulation technique for speech signals in communications. The music signal is first modulated into a serial binary digital bit stream and then the binary digital bit stream is passed through a first-in, first-out memory. At the outflow end of the memory, the binary digital bit stream is demodulated and restored to the original waveform. Audio delay circuit using this digital technology at the appropriate sampling frequency, than in the past simulation of the delay circuit BBD small distortion, wide bandwidth, high integration (monolithic system), easy to manufacture, and the cost of basic and BBD products quite.