- 声学楼论坛 (http://874085.11480.vipsjym.com.my3w.com/bbs/index.asp)
-- 测量、试验及标准室 (http://874085.11480.vipsjym.com.my3w.com/bbs/list.asp?boardid=9)
---- SoundCheck测试系统 (http://874085.11480.vipsjym.com.my3w.com/bbs/dispbbs.asp?boardid=9&id=674)
-- 发布时间：2006-2-27 10:46:58
-- SoundCheck测试系统
| SoundCheck是一套模块化基于PC的电声测试系统,它能高性能地完成电声产品各种参数的测试。无论对于生产线质量控制(QC)简易操作的要求,还是对研发（R&D）应具备各种扩展功能的要求,Soundcheck都能很好的满足并适用于整个设计和生产过程。通过在标准的PC上使用专业的声卡,Soundcheck确实是作为传统电声检测设备硬件更好更新的替换品。 | |||||||||||||||||||||||||||||||||||||||
| 性能： | |||||||||||||||||||||||||||||||||||||||
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| SoundCheck不但适用于要求严格的研发实验室,同样也适用于生产线。它可以被安装在生产线上完成详细的检测,而且给出通过检查或是不合格的结果。 |
| 这个通用测试台所提供的多项优势将被融汇于您的设计和生产流程之中。 |
|
R&D,QC,QA 的共有平台 |
| Soundcheck对研发工程师来说是一种有效工具。它使用有效的测量法则,能确保在大约几秒钟内对频响、相位、灵敏度、失真、指向性、阻抗、蜂音和Thiele-Small参数做出快速测量。在单独测试中,它能完成检测,数据分析,还能与预先测定的限定做结果比对。软件组合可形成一系列预先编制的测试程序,且这些程序与可无限扩展的工业标准相一致。包括有：TIA、ANSI、IEEE和ITU等等。 |
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通过使用Soundcheck的独特的可视脚本工具,制定检测顺序就变得简单了,而且不需要程序知识,因为那些简单的界面使复杂的测试建立一定模式的流程图,在测试或是在分析程序的每一步都可以简单的选择设定好程序或是使用者规定选项,简易的测试程序保证整个程序简单到只须用鼠标轻点设置键就能完成测试,从而可以重复检测。 |
| 数据可以被输出到用户的Soundcheck报告上,或者被发送到像微软的Word 或Excel等软件包和微软的Access或Oracle用于存档处理或是报告,Soundcheck可以使用美国国家仪器有限公司的测试标准)或是在Active X®的运作环境整合于较大的测试应用软件。 |
| 为了满足平台化的测试要求,Soundcheck构建了一个完整的虚拟声频测试台,其中包括一个手动信号发生器万用表,示波镜,频谱分析仪和一个实时分析仪,这样就避免了购买独立的仪器。 工程测试试验的发展成果很容易转换到生产中去,Soundcheck高级的运算法则甚至可以在极度吵闹的环境中进行高速准确的测试,一步接一步的简单的屏幕显示可通过校准,上下限和测试设置引导用户。软件可被配置为一点击就能完成普通测试的模式－操作者只用简单的在预编程序单中选出相应的生产模式和测试,声检测就能执行测试,分析数据并与预先定义的通过/失败限定进行结果比对。对不同操作者控制水平的设置能避免对测试次序的修改。声检测甚至可以整合于PLCs,条形码系统和外部硬件和软件系统。 |
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生产线经不起停产,soundcheck从根本上解决了这个问题。自从Soundcheck使用了Windows,一种PC和专业的音频声卡取代了昂贵的私人拥有的DSP卡,或者Front-end电子学,这些代用品就容易购买,维护成本较底.如果出现问题,用户自己可随意通过网上移动诊段立即获取援助使其恢复运转。同时,虚拟实验室将在全球各地兴建,这使得生产设备即使身在万里之遥，也可以进行与研发部门相同的测试。由于软件语言的多种选择和互联网传递数据的使用,它的使用非常广泛。它甚至可以使管理人员实时观察来自不同大陆的生产线监测数据。 |
| 声检测通过使用与研发实验室相同的测试对客户的样品进行测试。从声检测能在笔计本电脑上运行以后,用户就如同有便携的实验室音频测试站一样,能让轻易执行在线监控。 | |
|
有关电声测试系统的摘要 | |
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研发中心-全面的测试能力 | |
| 强大的测量计算法则 | |
| 标准及用户自定义测试 | |
| 与其他电脑应用软件进行灵活的数据输出和整合 | |
| 虚拟音频测试台 | |
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质量保证-客户审合 | |
| 公事包中完善的测试实验室 | |
| 在线进行与研发实验室里相同的测试 | |
| 为其他线下分析提供已存档的结果 | |
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质量控制-生产线 | |
| 屏幕上显示操作步骤 | |
| 一点击便可进入测试状态 | |
| 自动比对到事先定义的通过/失败限制 | |
| 操作访问的指定准则 | |
| 可与程序逻辑控制系统和条形码系统整合 | |
-- 发布时间：2006-2-27 10:47:57
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扬声器测试和测量应用
有了声检测，你将不再拘泥于仅使用受专利技术限制的那些基于硬件的测试系统进行检测。声检测是一个基于Windows
操作系统的现代化扩音器测试系统。通过使用强大的测试运算法则，声检测能完成精确的测试，例如：在几秒内就能完成频响，相位，敏感度，失真，摩擦和蜂音，电阻抗，方向特性和Thiele-Small参数的检测。测试数据和结果能输出到其他程序做进一步处理，并生成标准化文件。此外，声检测还能轻易整合于使用ActiveX（微软网络化多媒体对象控制技术）和National Instruments LabVIEW（美商国家仪器的图形化开发环境技术）的现有测试程序当中。-- 发布时间：2006-2-27 11:03:10
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SoundCheck Virtual Audio Test Bench
Manual Signal Generator
• Variable frequency and amplitude sine wave excitation via key board or virtual knobs
• Play any selected WAV file at a user-defined level
• Equalize any selected WAV file at a user-defined level
Multimeter
• Real-time monitoring of overall RMS levels (e.g. volts, SPL, ohms, etc.)
• Selectable averaging time
• Max hold
• Selectable Max/Min values with Pass/Fail indication
Oscilloscope
• Waveform peak detection
• Delta cursor
• Selectable zoom
Spectrum Analyzer
• FFT and DFT with any number of lines
• Hanning, Hamming, Blackman-Harris, and Flat top windows
• Max hold
• Selectable averaging time (Linear & Exponential)
• Selectable triggering
• Pure tone frequency and amplitude extraction
• Delta and Harmonic cursor with THD readout
• Power averaging
• Selectable zoom
Real-Time Analyzer
• 1/1, 1/3, 1/6, 1/12, 1/24 octave filters with true digital recursive filters
• A, B, and C weighting filters
• Complies with ANSI S1.11 and IEC 1260
• Max hold
• Exponential and linear time averaging including fast and slow sound level meter response
-- 发布时间：2006-2-27 11:03:53
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Hardware
• Modify sound cards settings, such as bit depth and sampling rate; select communication mode with peripheral devices including RS-232,GPIB (IEEE-488), DC Connect™ programmable DC power supply and measuring amplifier, and digital I/O cards; No limitation on number of external interfaces used.
Calibration
• User-defined units and transducer sensitivities enable SoundCheck to measure any dynamic signal. SoundCheck can be calibrated with external, absolute source including acoustic, vibration, or voltage. SoundCheck will correct for amplitude and phase of input and output devices (e.g. microphones and amplifiers). If the output device is an acoustic source, (e.g. loudspeaker, mouth simulator), SoundCheck can automatically equalize any test signal including complex signals.
Messages
• Message steps initiated based on Pass/Fail conditions
• Display text message in local language, input numeric values, Yes/No dialog
• Digital I/O
• IEEE-488
• RS-232
Stimulus
• Stimuli type include stepped sine sweep (STWEEP™), amplitude sweep, WAV file, DC, and continuous log sweep (used in conjunction with optional Time Selective Response analysis algorithm)
• Stweep step size includes 1/3, 1/6, 1/12, and 1/24 octave; user-defined linear and log
Acquisition
• Play & Record, or any combination of Signal Generator, Multimeter, RTA, and FFT
• Capture response time waveform as a WAV file
Analysis
• Amplitude values in linear units (e.g. volts, Pascals, etc.) or dB
• Envelope of response time waveform
• Impedance curves
• Autodelay to automatically compensate for delay between input and output
• Manually enter delay in milliseconds, centimeters, or inches
• Broadband RMS to measure unfiltered level of an AC or DC signal
• Spectrum calculates the FFT of the response waveform
• Time Selective Response to measure free-field and impulse response of fundamental AND harmonics
• Heterodyne to measure frequency and phase response only
• HarmonicTrak™ Algorithm power sums a range of user-selected harmonics including sub-harmonics; no limit to number of harmonics
• Frequency and phase response including harmonic amplitude and phase
-- 发布时间：2006-2-27 11:05:26
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• Classic THD and Rub & Buzz
• Normalized THD and Rub & Buzz distortion (harmonics compared to amplitude of fundamental at measured frequency)
• THD + Noise
• Relative or absolute response
• Loose particle detection
Recall
• Automatically recall data or results
Post-processing
• Addition, subtraction, multiplication, division, offset by constant (X, Y, or Z dimensions), change sign, reciprocal, absolute value, square, square root, exponential, logarithm, average, maximum, minimum, estimated resonance and notch
• Search range to find intersection of two curves (e.g. -3dB points of crossover network)
• Curve smoothing with 1/3, 1/6, 1/12, and 1/24 octave or user-defined linear or log resolution
• Loudness rating according to IEEE and ITU-T; example sequences for TIA and other industry standards included
• Attack & Release time calculates the time for the response signal to rise or decay, respectively, by a user-defined amplitude in dB or linear units
• Equation editor
• Thiele-Small parameters using added mass or added volume
• Any number of equations can be combined
• Variables can be given user-defined descriptive names (e.g. Qms for speaker Q with added mass)SoundCheck Step Editors
Statistics
Real-time updates of:
• Overall yield
• Yield for an individual test (e.g. sensitivity)
• ± x sigma of any measured curve, result, yield, or calculated value
• Max, min, and mean of any measured curve, result, yield, or calculated value
Limits
• Limits applied to any measured curve, value, or calculated value
• Upper only, lower only, upper and lower
• Limits can be entered manually, recalled from a file, offset a curve or portion of the curve by user-defined amount (e.g. ±3 dB), or changed graphically by "dragging" limit points using mouse
• Floating, absolute, align to a point (e.g. 1 kHz aligned to 0 dB), individual points
• X axis can be "floated"
Display
• Multiple displays can be placed on the screen to view curves, single values, and test results with PASS/FAIL indicators; display layout can be transferred to Word or as HTML document; curves
-- 发布时间：2006-2-27 11:06:46
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Optional Hardware (Separate data sheets available)
Professional Audio Sound Card
For measurements up to 40 kHz - PCI, 96 kHz sampling rate, 24 bit, balanced 2 in/2 out, 110dB dynamic range and Digital I/O
For measurements up to 100 kHz - PCI, 215 kHz sampling rate, 24 bit, balanced 4 in/4 out or 2 in/6 out or 6 in/2 out, 117dB dynamic range and Digital I/O
For laptop measurements - PCMCIA, 48 kHz sampling rate, 24 bit, balanced 2 in/2 out or 4 in/4 out, 94dB dynamic range, Digital I/O, and headphone output
* Ask Listen for details on latest available sound cards, specifications and drivers
SCM Measurement Microphones
• Cartridge Type: Prepolarized condenser element, vertical diaphragm
• Directional characteristics: Omni-directional
• Frequency Response: 20 Hz - 20 kHz ± 2 dB
• Nominal Sensitivity: 6 mV/Pa (SCM-1) and 20 mV/Pa (SCM-2)
• Equivalent Noise Level: 26 dBA (SCM-1) and 23 dBA (SCM-2)
• Max SPL: 144 dB (SCM-1) and 134 dB (SCM-2)
• Distortion: 123 dB SPL peak (<1% THD)
• Operating Temperature range: -30 to +70°C (-22 to 158 °F)
• Operating Humidity range: 0 to 100 % RH (without condensation)
• Output impedance: 30 - 40 Ohms (built- in preamplifier)
• Cable drive capability: Up to 300m(-0.2V at 20 kHz with 114 dB SPL) using ICP®
• Dimensions: Length: 9.3 cm (3.6 in) Diameter: 5.4 mm (0.21 in)
• Cable: 1.75 m (5.75 ft)
• Connector: 7-pin Lemo
• Weight: ~ 14 grams (0.5 ounces)
• Accessories: Wind screen, calibrator, microphone holder, extension cable
SoundConnect Microphone Power Supply
• Input connectors: BNC in parallel with B&K 7-pin preamplifier or optional Lemo
• Output connectors: BNC on front panel in parallel with RCA phono on rear panel
• Frequency range: 20 to 100 kHz ± 0.1 dB (-3 dB at 5 Hz and 200 kHz)
• Gain: -20 to 60 ± 0.2 dB in steps of 20 ± 0.1 dB
-- 发布时间：2006-2-27 11:07:55
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• Preamplifier supply: 120V @ 2mA single or ± 14V dual
• Input noise: <1.8μVRMS (A-weighted),<3.0μVRMS (20 - 20 kHz), @ 20 to 60 dB
• Total Harmonic Distortion: < 0.003%
• Microphone polarization voltage: 0, 28, 200 V ± 1%, stability better than 0.5% for ±10% variations in mains-voltage
• Input impedance: 1 MΩ
• Output impedance: 600Ω
• Output attenuator: 0 dB (7.07 VPeak), -8 dB (2.82 VP), -14 dB (1.41 VP)
• ± 0.1 dB
• Peak level meter: Indication at -20, -10, 0 dB, and overload relative to selected output range ± 0.5 dB.
• Power requirements: 115/230 V AC ±10% switchable, 50 to 60 Hz,
• detachable IEC power cord
• Dimensions: 5.5" (139.7 mm) H, 2.5" (63.5 mm )W, 7.5" D (190.5 mm)
• Weight: 2 lbs. (910 g)
DC Connect – DC Power Supply and Monitor
• Connected in place of a battery, measure the current drawn from the battery
• Test a device over the voltage descent of a battery\'s lifetime
• Measure resistance, typically using the current source mode
• Apply a voltage or current ramp
• Acquire the I-V characteristic curve of a device
• Measure current draw synchronized with an audio stimulus
• Acquire a current draw vs. audio level curve
• Measure the dynamic response of current draw to a step in audio level
• Monitor test point voltages
• USB or sound card control
• Current limiting
• ±10V with 1mV resolution
• 3 to 300mA with 0.1mA resolution
Optional Accessories
• Remote footswitch & buzzer (includes RS-232 serial interface)
• Bar code reader
• Measurement microphones
• Preamplifiers
• Calibrators
• Artificial ears
• Artificial mouths
-- 发布时间：2006-3-2 20:57:46
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广告啊！
-- 发布时间：2006-3-5 23:05:51
-- SoundCheck测试系统
版主好:
偶也用soundcheck的,想请教请教您关于THD的测试.
-- 发布时间：2006-3-6 10:34:39
-- 第一节 部品材料的认识 （磁液）
什么问题？
-- 发布时间：2006-3-6 16:46:36
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不是做广告,只是让各位有所了解.
国内有些厂买了很多台,用于流水线上在线测试
-- 发布时间：2006-3-6 17:16:00
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听说20多万/台
-- 发布时间：2006-3-6 17:18:22
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是啊,价格不菲,居然有单位一口气买20-30台用于在线测量.
-- 发布时间：2006-3-7 18:38:18
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SoundCheck本就是用于在线测量的，曲线分辨率低，也不适用于研发呀！
-- 发布时间：2006-3-8 9:50:01
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soungcheck测试系统
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2 ]
提醒一下，题目有错字
-- 发布时间：2006-6-21 9:39:16
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请问soundcheck中的spectrum analyzer如何使用，这一命令具体有什么功能啊，从图上显示的图形可以得出什么结论
-- 发布时间：2006-6-21 9:40:03
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请问soundcheck中的spectrum analyzer如何使用，这一命令具体有什么功能啊，从图上显示的图形可以得出什么结论
-- 发布时间：2006-6-21 10:55:04
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soundcheck无法实现DRP-ERP的转换！！！要用修正曲线修正。。
-- 发布时间：2006-6-21 12:52:30
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请问当用系统中的multimeter来测量信号的电压时，电压的电位可以调吗，我想测精度为uv，可以测吗
-- 发布时间：2006-7-4 12:34:03
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如果要精确到mv的话，我想比较困难。因为soundcheck标配2种声卡,carddeluxe的和NI4461.其中NI的这块应该算是顶级了，好像也只能到mv的级别吧，还是在增益40dB的基础上面的。问一下：uv的电压是测什么的？？