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Audio Analyzers

About Audio Analyzers

Audio analyzers measure the noise and audio spectrum of output from an amplifier or a stereo. There are three basic product types: analog, digital, and converter-based. Analog audio analyzers use analog hardware to generate signals and analog filters to measure them. By contrast, digital audio analyzers use digital signal processing (DSP) algorithms to both generate and analyze signals in the digital domain. Today, most professional-grade audio analyzers are converter-based devices that generate and analyze signals in the digital domain, and use analog-to-digital converters (ADC) and digital-to-analog converters (DAC) for analog input and output. Basic format parameters include the number of channels, communications interface, operating system (OS), and dimensions or form factor.

Audio analyzers generate sine waves, square waves, random noise, and combinations of these signals. For optimum performance, some products use multiple oscillators or waveforms in the analog domain. Typically, converter-based audio analyzers are used when analog methods are unable to generate specific waveforms. By using DACs, these devices can produce not only multi-tone waveforms and shaped burst, but also sine waves with inter-channel phase shifts - a technique that is especially useful in testing surround-sound decoders. Balancing sharpness of filtering against distortion reduction is difficult, however, and sharper filters may introduce more response ripples. Therefore, most high-performance audio analyzers have a dedicated analog oscillator for total harmonic distortion plus noise (THD+N) testing.

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Engineering Web: Audio Analyzers

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MATLAB Central - File detail - Rohde & Schwarz UPL Audio...
Rohde & Schwarz UPL Audio Analyzers by The Instrument Control Team Rohde & Schwarz UPL Audio Analyzers MATLAB instrument driver
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MATLAB Central - File detail - Simple Audio Editor
There are also filters to process the audio data and analyzers to analyze the data.
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Audio Analyzers: Providers and Solutions | Business.com
Audio Analyzers Home » Directory » Electronics & Semiconductors » Electronic
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Part Numbers for Audio Analyzers

Part # Distributor Manufacturer Product Category Description
ZZA-300 Newark ROHDE & SCHWARZ Other Accessories Rack Adapter; External Width:19""/; Features:1/2 Rack Width Holds 2 Audio Analyzers Side-by-Side; For Use With:Rohde&Schwartz UP300 and UP350 Audio Analyzers; Rack U Height:2 RoHS Compliant: NA
ZZK-300 Newark ROHDE & SCHWARZ Cases Carrying Case; Body Material:Metal; Color:Silvertone; Features:Foam-lined, Hardsided; For Use With:Rohde & Schwartz UP300 and UP350 Audio Analyzers RoHS Compliant: NA
UP 350 Newark ROHDE & SCHWARZ Signal Generators Audio Analyzer; Bandwidth Max:3GHz; Modulation Type:Distortion Analysis; Display Technology:TFT Color; External Depth:350mm; External Height:147mm; External Width:219mm RoHS Compliant: NA

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