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走进慧明
慧明电子 — 专业DSP音频处理专家
佛山慧明电子科技有限公司（HMAUDIO），是一家集专业DSP音频处理产品的研发、制造及销售为一体化的高新技术企业。历经多年潜心研究，我们坚持专业专注、自主创新，在DSP音频研发应用、生产管理、声学结构处理等方面积累了丰富的经验与优势。我们拥有先进的全自动电子生产装配线（高速自动贴片机、无铅热风回流焊、自动插件机、光学检测仪、无铅波峰焊高效可靠的美国AP在线电脑测试分析系统），通过精密生产，严格把关，科学管理，确保产品效果及品质。
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(Out of production) DSP-4400 DSP Module Board
(Out of production) Digital DSP board DSP-4400
Features
1. 4 inch 6:9 TFT touch screen.
2. 96KHz sampling frequency, 24bit A/D&D/A converter, 32 bit floating point DSP chip.
With professional PC control software, remote real-time control by USB or RS485.
4 channels input and output, matrix model input and output set freely.
Output channel: Mute, 8 bands EQ, X-over, input source optional, Polarity, Delay, Limiter, Gain (Delay max to 1s; frequency point, slope size and slope form of X-Over adjustable; frequency point,gain and band width of EQ adjustable, plus PEQ, Hi-Shelf and Lo-Shelf optional models
Technical Parameter
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Technical Parameter |
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DSP4400 |
DSP4200 |
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Input/Output channel |
4Input(balanced)/4Output(unbalanced). |
4Input(balanced)/2Output(unbalanced). |
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Mute |
√ |
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Mode |
stereo, parallel，bridge. |
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Delay |
Each input channel has delay control,adjust range: 0-1000ms. |
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Polarity |
In phase(+) & Reversed phase(-) . |
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EQ |
Each output channel has 8bands EQ. EQ Modes : PEQ/Lo-shelf/Hi-shelf |
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X-over |
LPF HPF mode: Linkwitz-Riley/Bessel/Butterworth, FREQ： 20Hz-20KHz, Total: 239 point (Slop)：12dB/oct、18dB/oct、 24dB/oct、48dB/oct |
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Limiter |
Gate level:±13dBμ, Step:0.05dBμ, Start time：03ms-100ms，<1ms，Step:0.1ms, >1ms， Step:1ms Release time: Release time can be set as twice,2/4/6/8/16/32time. |
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Input /Output port |
Input：balanced Output： unbalanced |
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Parameter |
32 bit DSP chip processor,96KHz sampling frequency,24 bit AD/DA converter. |
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Display |
4 " TFT 800＊600 wide screen display setting |
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Input impedance |
Balanced 22 KΩ |
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Output impedance |
unbalanced 560 Ω |
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Input range |
≤+12dBu |
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Frequency |
20Hz-20KHz(0~-0.5dB) |
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S/N |
＞105dB |
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THD |
＜0.01% （Output=0dBu/1KHz） |
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Crosstalk |
＞80dB(1KHz) |
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PC Port |
Front panel has 1 USB port |
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Power |
+15V(80mA),-15V(80mA),+5V(800mA) |
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Unit Dimensions |
motherboard : 62X146(mm) control panel: 57X164(mm) |
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Digital Audio Processor, Intelligent Conference Audio System, Video K Front Stage, Digital Mixer, KTV Front Stage Effector, Front and Back Stage Combined Power Amplifier, Professional Power Amplifier, DSP Sound Processing Module and many other electronic audio products