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特性: * 采用32比特率浮点运算器,使运算精度更高。 * 采用96KHz采样频率比目前多数同类产品高一倍,使声音更准确,失真更小。 * 用附送的软件，可以通过计算机(PC)远程控制： 近距离通过WiFi、USB接口或RJ45(LAN)接口控制。远距离通过RJ45(LAN)接口控制。 |
型号 Model | DSP-4800 |
性能指标 Characteristic specification： | |
输入 Input | 4 way electronic balance. |
阻抗 Impedance | >10k ohms. |
共模抑制比 CMRR | >65dB，50Hz - 10kHz. |
输出 Output | 8 way electronic balance |
输出阻抗 Output impedance | <60 ohms |
最小负载阻抗 The minimum loading impedance | 600 ohms |
最大输出电平 The maximum output level | +20dBm（600 ohms loading） |
频率响应Frequency reponse | ±0.5dB 20Hz - 20kHz. |
动态范围 Dynamic range | >110dB 20Hz -20kHz |
失真 Distortion | < 0.02% @ 1kHz，+18dBm. |
最大延时 The maximum delay | 650 mS. (adjustable step distance is 2.6uS) |
输出增益 Output gain | Setting range:-40dB~+15dB,Step pitch: ±0.1dB |
输入增益 Input gain | Setting range:-40dB~+6dB,Step pitch: ±0.1dB |
参数均衡器 Parameter equalizer: | |
滤波器 Filter | 6 bands/each output, 8 bands/each input |
滤波器增益 Filter gain | +15dB to -30dB, the step distance is 0.1dB |
中心频率 Central frequency | 20Hz - 20kHz, the adjustable step distance is 1/36 octave.(368 positons) |
滤波器Q值/宽带 Filter | Q value/band width 0.4 to 28.8 / 3 to 0.05 |
切换成高、低通响应 Switch to high, low pass frequency | |
低频转折频率 Low frequency transition frequency | 20Hz - 1kHz |
高频转折频率 high frequency transition frequency | 1kHz - 20kHz |
增益 Gain | ±15dB, adjustable step distance is 0.1dB |
高通及低通滤波器 High pass and low pass filter: | |
滤波器 Filter | each output with one filter |
转折频率（高通） Transition frequency (high pass) | 10Hz - 16kHz,adjustable step distance is 1/36 octave |
转折频率（低通） Transition frequency (low pass) | 60Hz - 22kHz,adjustable step distance is 1/36 octave |
响应 Selectable filter type: | Lin-Ril、Bessel、ButterW |
限幅器 Limiter: | |
门槛值 Threshold range | +20dBu to -10dBu |
启动时间 Start-up time | 0.3 to 90ms |
释放时间 Release time | start-up time 4, 8, 16 or 32 times |
