AN-9001
環境噪音偵測麥克風
DP-L2
環境噪音控制器
DiscontinuedDP-L2
DP-L2 是數位音訊處理器，配備 2#83 輸入、2#83 輸出、1 個環境噪音感測器麥克風輸入和 1#83 監聽輸出，並可透過前面板操作輕鬆設定各項功能。它配備了環境噪音控制功能（ANC 功能區分本機的輸出聲音和環境噪音。本機的輸出聲音不會被偵測為雜訊。）以及自動電平控制功能，可保持輸入訊號電平恆定。它可以安裝在 EIA 標準配備機架中（1 個單位尺寸）。
- 數位音訊處理器調整BGM/公告音量以適應環境噪音的變化
- 自動準確調整輸入和輸出聲級
- 排除輸出不受環境噪音感應
- 安裝方便、快速，操作簡單
- 1 單元尺寸
電源
110 – 120 V AC, 50/60 Hz
消耗功率
20 W (300 mA)
頻率響應
20 Hz – 20 kHz, ±1 dB
取樣頻率
48 kHz
動態範圍
108 dB (IHF-A weighted) or more
失真率
0.006% or less, 1 kHz, + 4dB* input/output (20 Hz - 20 kHz BPF)
輸入
Sensor input (Ambient noise sensor microphone input): +4/–48 dB* changeable, 10 kΩ, electronically-balanced, removable
terminal block (4 pins), phantom power (+15 V DC, can be turned on or off with Phantom switch) with +15 V DC terminal
Input 1, 2: +4/–8/–20 dB* changeable, 15 kΩ, electronically-balanced, removable terminal block (3 pins)
terminal block (4 pins), phantom power (+15 V DC, can be turned on or off with Phantom switch) with +15 V DC terminal
Input 1, 2: +4/–8/–20 dB* changeable, 15 kΩ, electronically-balanced, removable terminal block (3 pins)
輸出
Monitor output: +4 dB*, 600 Ω, electronically-balanced, removable terminal block (3 pins)
Output 1, 2: +4 dB*, 600 Ω, electronically-balanced, removable terminal block (3 pins)
Output 1, 2: +4 dB*, 600 Ω, electronically-balanced, removable terminal block (3 pins)
A/D轉換器
24 bit
D/A Converter
24 bit
Digital Signal Processing
Automatic Level Control Function
Level meter (4 LED meters), Automatic input signal level control function, Automatic input sensitivity setting function (+4/–8/–20 dB*), Noise gate level setting (–99 to –3 dB)
ANC (Ambient Noise Control)
Level meter (4 LED meters), BGM/Announce level control function, Automatic sensor input reference level measuring function,
Sensor input reference level fine adjustment function, Maximum output signal level control (–15 to 0 dB),
Minimum output signal level control (–18 to –3 dB), Sample time setting (10 s, 20 s, 30 s, 1 min, 5 min), Gain ratio setting (6:3, 5:3, 4:3, 3:3, 3:4, 3:5, 3:6), Ambient noise measuring frequency setting (20 Hz – 20 kHz, 3 points)
Maximum Output Signal Level Control Function
–12, –6, 0, +4, +6, +12, +18, +24 dB*
Input Level Indicator
8 LEDs indicator
Output Level Indicator
8 LEDs indicator
Other Feature
Phantom power switch (sensor input), Key lock function, Ground lift switch (INPUT 1, INPUT 2), Input/Output byass function in power off
工作溫度
0 ºC to 40 ºC (32 ºF to 104 ºF)
工作濕度
90% RH or less (no condensation)
外觀
Pre-coated steel plate, black, 30% gloss
尺寸
482 (W) x 44 (H) x 303 (D) mm (18.98" x 1.73" x 11.93")
重量
3.7 kg (8.16 lb)
附屬品
Power cord (2m (6.56 ft) x 1, Removable terminal plug (4 pins) x 1, Removable terminal plug (3 pins) x 5
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