What hardware is needed for analyzing sound signals?

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Discussion Overview

The discussion revolves around the hardware requirements for analyzing sound signals, focusing on both spectral and time plots. Participants explore various tools and setups, including educational options that are cost-effective.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the specific type of sound analysis desired and the application context, suggesting that a smartphone could suffice for basic analysis but a better microphone setup may be necessary for more advanced needs.
  • Another participant suggests that a typical PC with a good digital recording or sound card would be adequate, emphasizing the variability in hardware requirements based on specific needs.
  • A good microphone is highlighted as crucial hardware for sound analysis, with the opinion that investing significantly in the microphone is more important than in the sound card.
  • One participant mentions that software options are largely available for free, with a focus on the importance of hardware in achieving accurate sound samples.
  • A technical contribution references the use of ffplay.c from SDL-1.2 for FFT and visualization, indicating a preference for using an Xbox controller for output.

Areas of Agreement / Disagreement

Participants express varying opinions on the importance of different hardware components, particularly the microphone versus the sound card, indicating a lack of consensus on the best approach for sound analysis.

Contextual Notes

Participants mention various software options and hardware combinations without reaching a definitive conclusion on the optimal setup, highlighting the dependence on specific analysis needs and applications.

fog37
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Hello everyone,

I am interested in analyzing sounds (both spectral plots and time plot). What type of hardware would I need? There are a lot of free softwares online...

Are there educational hardware tools that are not too expensive?

thanks!
 
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fog37 said:
Hello everyone,

I am interested in analyzing sounds (both spectral plots and time plot). What type of hardware would I need? There are a lot of free softwares online...

Are there educational hardware tools that are not too expensive?

thanks!
Could you say more about the sounds? What kind of analysis exactly are you wanting to perform? What is the application?

You can use a smartphone for basic analysis, but you would need a better microphone setup for some situations. What equipment and software packages have you looked into so far?
 
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For sound - a typical PC should do fine, if you have a good digital recording or sound card to record with. Use various combos of : open source, FFT, spectral analyzer, oscilloscope - etc...

There is no single list - too many variables.
 
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I guess a good microphone would be the right type of hardware and then I can use some software for the analysis...
 
Typically (and the mechanical engineers will hate me for this) the electrical systems are probably 100x more accurate than the mechanical, and software, 100 to 1000 or more times more accurate than electrical.

If you want accurate sound samples from the real world, spend at least 90% of your money on the microphone. ( IMO - conversely for reproduction -- spend the same ratio on your speakers... headphones are a little different, too much hype!). 20 years ago a 44kHz sample was hard to come by, but today that is child's play.

So, a really good microphone into an average sound card - is far better than a cheap mic into a great sound card.

Software today is practically free, one guy wants a good tool and gives it away, then the cost goes to zero - all of the others needs something physical.
 
the ffplay.c source from SDL-1.2 has a approx of FFT and little options but best option to visualize acoustics from hardware that being said am xbox controller is my preference and I have the source for output as well on my website Atmel-uController Repurposed
 

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