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Sound Pressure (SPL)

Task of the QC STANDARD Software and Optional Module for the R&D System

Features and Benefits

  • Optimized for quality control applications, such as end-of-line testing
  • Included in the Klippel QC Standard Software package
  • Comprehensive analysis based on chirp / sine sweep for audio testing
    (multi-domain) according to IEC 60286
    • Fundamental frequency response, opt. windowing
    • Average level, multiple band levels
    • Phase, polarity, time delay
    • Harmonic distortion (THD, 2nd-5th)
    • Track down defects: Rub&Buzz, HOHD, air leakage noise
  • Fast testing with high sensitivity: amplitude and speed shaping
    (testing from 0.2 s for full bandwidth)
  • Production noise detection to avoid false rejects
  • Limits, grades for all measures
  • Online yield, Cpk/Ppk, control rules
  • Seamless integration of dedicated add-ons for additional results and capabilities

The Sound Pressure Task (SPL) is a universal measurement task optimized for QC applications for all kinds of electrical, mechanical (displacement, acceleration) and acoustical signals in the time and frequency domain. The excitation signal is a logarithmic chirp that allows very fast testing of the most important acoustic characteristics over the full bandwidth in no more than 200 ms according to IEC standard 60268-5 and 21. The chirp signal provides a dense excitation spectrum, giving higher frequency resolution than a stepped sine sweep.

The SPL offers outstanding sensitivity for all kinds of distortion caused by undesired dynamics (e.g. rocking modes), manufacturing problems and defects (e.g. Rub & Buzz). Detecting defects with the highest sensitivity requires robustness against any external noise from production (EoL) or in a lab environment (RnD) which is included in this task. Various add-on options are available that seamlessly integrate in the SPL adding powerful capabilities, likeloop testing, spectrogram analysis or air leak detection and many more.  


Specification


Related Add-ons

Options operate as plug-ins and extend the functionality of this task. 
No additional test time is required, all options use or modify the excitation of this task. 

Add-Ons (to purchase):

Features Libraries (free of charge):

  • Calculate SPL Resonances
    Provides resonance frequency and peak value for peaks in definable bands. Can be checked against limits.
  • Sequence Control: 
    Repeats or skips measurement tasks with or without user interaction.
  • Square Wave Stimulus: 
    Provides square wave chirp instead of sine chirp.
  • Relative Level to Golden DUT:
    Test average deviation to reference DUT
  • I/O (Input/Output)
    Adds additional I/O options (message box, set Digital Out after test)

Requirements

Test Hardware

License Dongle (USB)

PC

Software

Accessories





Related Information

Other Modules of the QC System 

Related Products


Standards

Consumer Electronics Association 
CEA-CEB19, CEA-803 R200X, CEA-2006-A, CEA-2019, CEA-2031, CEA-2034 (ANSI)

International Electrotechnical Commission
IEC 60268-1, IEC 60268-3, IEC 60268-4, IEC 60268-5, IEC 60268-7, IEC 60268-16, IEC 60268-21, IEC 60268-22, IEC 61094-5, IEC 61305-5, IEC 61842, IEC WD 63034

European Standards 
BS EN 54-24, BS EN 50332

Audio Engineering Society 
AES2-1984, AES2-1984, AES17-2009, AES56-2008, AES X223, AES X241

Institute of Electrical and Electronics Engineers 
IEEE 269, IEEE 1206, IEEE 1329, IEEE 1652 

American National Standards Institute 
ANSI S1.15-Part 1, ANSI S1.15-Part 2, ANSI S3.7, ANSI S3.22, ANSI S3.25, ANSI S12.42

International Telecommunication Union 
ITU-R Recommendation BS. 775-2, ITU-R Recommendation BS. 1116, ITU-R Recommendation BS. 1534-1, ITU-T Recommendation P.79

International Organization for Standardization 
ISO 266:1997, ISO 4869-3

Telecommunications Industry Association 
TIA-470, TIA-810, TIA-920


American Society for Testing and Materials 
ASTM F2504-05