Microphone Array System for Noise Source Identification

Noise source identification of large-scale machinery is a tough issue. If you don’t know the noise source, you cannot find out methods of improving you products. Microphone array, or acoustic camera, is an advanced technology for noise source identification in steady, non-steady, motion, or rest state. A microphone array system can display noise source distribution in real time, and identify the locations of noise source inside the equipment

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Audio Test Products

Jumho Electric Corporation

Jumho Electric Corporation Audio Test Products

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4-slot PXI Chassis

JSV-1031-8106 - Jumho Electric Corporation

PXI busUp to 3 slots and 48 channelsEmbedded controller: 2.16GHz Intel dual-core processor, 1 GHz bandwidth，2 GB RAMExternal cooling method: natural cooling and fan Uninterruptible power supplies (UPS): yes Operating temperature：-20℃ to +55℃Power requirement：220VMaximum power consumption：less than 200 WDimensions：257 (L) × 212 (W) ×177 (D)

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Abnormal Sound Test Software

Jumho Electric Corporation

Signal extraction, real-time curvesProfessional database of each productQuantitative values of abnormal soundSophisticated signal processing techniquesAbnormal sound -- not noise but special sound downed in signals

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Abnormal Sound Tester

USB-9002 - Jumho Electric Corporation

USB-9002 abnormal sound test system employs advanced digital signal processing and identifies industry noise effectively in complex sound environments. The identifiable noise includes spirant, abnormal sound, special noise, abnormal jitter, collision sound, bearing tone, and rotor mechanical sound.

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Anechoic Chamber

Jumho Electric Corporation

Wedge:The acoustic absorptivity of sound-absorbing materials used in anechoic chamber must be greater than 0.99. In anechoic chamber, gradient absorption layer, wedge or conical structure are often applied with glass wool and flexible foam as its sound-absorging materials. Anechoic Door: The design of rotatable door can affect the whole function of anechoic chamber. Therefore, it's crucial to combine steel plate and sound-absorbing cotton in the door, which is exactly our design.Acoustic Insulating Material:Applying high-density materials to enclose external noise. Damping materials: Using spring, rubber and cotton to enhance damping capacity.The Anechoic Chamber conforms to GB/T 6882-86 and ISO 3745 specifications.

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Artificial Ear

AE1000 - Jumho Electric Corporation

Artificial ear is designed to simulate human ear to test what human can hear. AE1000 conforms to IEC60318 and ITU-T P.57 standard. You can use AE1000 in the audio test of telephone, cell phone, or microphone.

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Artificial Mouth

AM1000 - Jumho Electric Corporation

Artificial ear is designed to simulate the sound fiedl around the human mouth. AM1000 artificial mouth conforms to IEC269 and ITU Rec.P51. You can use AM1000 to test the telephone mouthpieces.

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PCI I/O Module for Sound and Vibration

JSV-4461-PCI - Jumho Electric Corporation

2-channel ICP analog voltage inputMaximum sample rate: 204.8KS/s; simultaneous acquisitionAnalog-to-digital converter: delta-sigma, 24 bitsPhase Accuracy < 0.05deg@10KHzMaximum analysis bandwidth：96 KHzInput range from ± 42.4 V to ± 316 mV Coupled Mode: AC, DCDigital filter: user-defined low pass, high pass, band pass, band stopDynamic range: 118 dB; harmonic distortion: -107dB; channel crosstalk: -138dBICP current: 0-4 mA, optional 2-channel analog output range: ±10 V; update rate: 204.8 kS/s

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PXI I/O Module for Sound and Vibration

JSV-4498-PXI - Jumho Electric Corporation

16-channel ICP analog voltage input Maximum sample rate: 204.8KS/s; simultaneous acquisition Analog-to-digital converter: delta-sigma, 24 bits Phase accuracy < 0.02deg@10KHz Maximum analysis bandwidth：96KHz Input range from ± 10 V to ± 316mV Coupled mode：AC Signal conditioning: anti-aliasing filter Digital filter: user-defined low pass, high pass, band pass, band stop Dynamic range：114 dB ICP Current：0-4 mA, optional Overload indication: software displa

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Psyacoustic Test System

Jumho Electric Corporation

Psychoacoustics is the science of the relationship between physical quantities of sound and subjective hearing impressions. To examine these relationships, physical parameters, such as loudness, sharpness, roughness, fluctuation strength, are mapped to hearing-related parameters. Unlike the physical quantities, these hearing-related quantities – also referred to as psychoacoustic parameters – provide a linear representation of human hearing perception. The psychoacoustic test system, with interactive interface and user-friendly operations, analyzes psychoacoustic parameters effectively and conforms to the international standard ISO 532 Part B.

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Professional Audio Test and Analysis Software

AudioExpress Software - Jumho Electric Corporation

Audio Engineering is facing great pressure with the increasingly stringent standard and ever-lowering product prices. Customers are expecting more and more cost-effective audio products with ever-improving design and higher quality. Shorten the time of engneering development becomes chanllenge of this industry. AudioExpress can meet the needs of this market.

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USB I/O Module for Sound and Vibration

JSV-4431-USB - Jumho Electric Corporation

4-channel ICP analog voltage input 102.4KS/s maximumsample rate, simultaneous acquisition Analog-to-digital converter：delta-sigma, 24 bits Phase Accuracy < 0.05deg@10KHz Optional Input voltage range: ±10 V,±5V, ±1Vm ±100mV ； Signal conditioning: anti-aliasing filter Digital filter: user-defined low pass, high pass, band pass, band stop Dynamic range: 100 dB ICP current: 0-4 mA, optional 1-channel analog output voltage：±3.5 V; update rate: 96 kS/s Overload indication: software display

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