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数字声频磁带录音机、简称DAT,已广泛应用于专业录音并进入了家庭音响世界。一般DAT录音机为双通道输入,每通道采样率48kHz,A/D分辨率在16bit以上,记录动态范围在90dB以上。DAT盒带只有模拟盒带一半大小,而记录时间达二小时,可存储1200MB信息。因此,有越来越多的人把它作为高精度的声频数据记录仪应用于语音、水声、振动等科研领域。但是,目前计算机系统缺乏与之相应的接口板,它记录的数据不能直接送计算机内处理,妨碍了它的推广应用。为此,中科院声学所最近研制了一种PC总线的DAT计算机接口板。
Digital audio tape recorder, referred to as DAT, has been widely used in professional recording and into the home audio world. General DAT recorder for the dual-channel input, each channel sampling rate of 48kHz, A / D resolution in more than 16bit, recording dynamic range of 90dB or more. The DAT cartridge has only half the size of the analog cartridge and up to two hours of recording time, storing 1200MB of information. Therefore, more and more people use it as a high-precision audio data recorder in fields of voice, underwater sound and vibration. However, the current lack of corresponding computer system interface board, the data it records can not be sent directly to the computer processing, hinder its promotion and application. To this end, Institute of Acoustics recently developed a PC bus DAT computer interface board.