Portable spectrum analyzer for audio - Page 1
Forum section: electronics / testgear

author: luiHS
author_rank: Frequent Contributor
timestamp: January 13, 2024, 04:56:59 pm
content: Hello.Can anyone recommend a portable spectrum analyzer for audio?Everything I see seems oriented to radio signals because it reaches up to Gigahertz, and below from 100Khz or something less, and leaves out the entire audible spectrum.I have a Hantek oscilloscope MSO5102D, which I recently discovered has a spectrum analyzer in the Math functions, but it looks very rudimentary, for example it does not have options to automatically detect harmonics and their levels, calculate THD and other sound-related functions.

author: slybunda
author_rank: Regular Contributor
timestamp: January 13, 2024, 05:37:10 pm
content: I dont have a spectrum analyzer but i use a SMD DD-1 for tuning amplifiers. Its a distortion detector

author: Roehrenonkel
author_rank: Frequent Contributor
timestamp: January 13, 2024, 07:54:23 pm
content: Hi luiHS,https://sch-remote.com/Color-LCD-touchscreen-VU-meter---Oscilloscope---Real-time-analyzer---Envelope---Goniometer-PID-EVOR04.php

author: Rydda
author_rank: Contributor
timestamp: January 14, 2024, 12:28:54 am
content: I use the QuantAsylum QA402/QA403 analyzer.https://quantasylum.com/products/qa403-audio-analyzer

author: 2N3055
author_rank: Super Contributor
timestamp: January 14, 2024, 01:44:01 am
content: Phonic Audio Analyzer (PAA3X)NTi Minilyzer ML1

author: MarkT
author_rank: Frequent Contributor
timestamp: January 19, 2024, 09:47:20 am
content: Quote from: luiHS on January 13, 2024, 04:56:59 pmMost DSO's are 8 bit which is nothing like enough for audio. Even the 12 bit one's aren't going to be able to measure truly low distortion equipment.A second-hand dynamic signal analyzer (aka FFT analyzer) is one approach, or something tailor-made for audio (Audio Precision!), or (and actually portable) something like one of the QuantAsylum audio analyzers which are pretty affordable. I've a QA403 and its pretty handy.

author: cvanc
author_rank: Frequent Contributor
timestamp: January 19, 2024, 12:45:23 pm
content: If there is sufficient budget to get the Quantasylum I cannot recommend it more highly. It's a superb bit of kit.Plus... look at that product family, lots of really solid boxes that expand the categories the base analyzer can work in.https://quantasylum.com/collections/frontpage

author: baldurn
author_rank: Regular Contributor
timestamp: January 19, 2024, 03:11:16 pm
content: Quote from: MarkT on January 19, 2024, 09:47:20 amWhy not use a 24 bit 192 KHz USB soundcard and do the processing on the computer?

author: luiHS
author_rank: Frequent Contributor
timestamp: January 20, 2024, 05:59:27 am
content: Quote from: baldurn on January 19, 2024, 03:11:16 pmThat's what I've finally decided to do, buy a Sound Blaster X3 sound card, It has a 24-bit ADC and 32-bit DAC, and as software I use the Visual Analyzer which is completely free and focused on sound.It is a much cheaper solution than those mentioned, and with hardware that is not dependent on a manufacturer, you can use any sound card, the software does not require licenses and is completely free without limitations.