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2012 Bruel & Kjaer Audio Analyzer


The 2012 is a 40 kHz Audio Analyzer from Bruel & Kjaer. With an audio spectrum analyzer, measure frequency response, level and gain, phase intermodulation distortion, signal-to-noise ratio, crosstalk, time domain display, and total harmonic distortion plus noise.

 Additional Features:

  • Transducer workstation combining the most advanced sine sweep and FFT techniques
  • 12" high-resolution colour monitor displays up to 36 curves simultaneously
  • Frequency range: 1 Hz to 40 kHz
  • Distortion and noise: <–80 dB re full scale input
  • Fast time selective measurement of complex frequency and impulse response
  • Steady-state response measurements as a function of swept frequency or level
  • Automated measurements of individual Harmonic, Intermodulation and Difference Frequency distortion components and total RMS
  • 1600 line FFT spectrum
  • User-definable Auto Sequences
  • Extensive post-processing facilities: +, –, x, /, 1/x, x2, vx, |x|, poles, zeros, windowing, editing, smoothing
  • On-screen help in English, French or German
  • Preamplifier (microphone) and balanced or singleended direct inputs
  • Two separate built-in sine generators m Built-in 3.5" 1.44Mbyte, PC/MS-DOS compatible floppy disk drive for storage of data, setups, and Auto Sequences and simple loading of complete applications
  • Screen copy facility for plotters and printers, both colour and monochrome, direct or via disk

The Bruel & Kjaer 2012 Audio Analyzer is a powerful instrument for transducer measurements and system analysis. It features a colour screen, built-in 31/2² floppy disk drive, IEEE-488 and RS- 232-C interfaces, three measurement modes and an Auto Sequence facility. The Time Selective Response mode enables extremely fast, accurate, swept sine measurements of the free-field response of a transducer in an ordinary room up to the 20th harmonic. The Steady State Response mode enables stepped sine measurements of Harmonic, Difference Frequency and Intermodulation distortion. The 2012 also incorporates a 1600 line single-channel FFT for spectrum measurements.


The Bruel & Kjaer 2012 has numerous post-processing capabilities: windowing, block arithmetic, addition of poles and zeros, square and square root, absolute value, and editing of response data. Applications include development and quality control testing of loudspeakers, telephones, microphones and other electroacoustic and vibration transducers.

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