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Author Topic: DSP Analyzer - loss the waveform!  (Read 3769 times)

fegelmej

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DSP Analyzer - loss the waveform!
« on: December 12, 2011, 05:12:59 pm »

Can somebody offer me a little insight into the ANALYZER window in the DSP plugin?  There are two boxes in the lower corners of the visualizer.  Like a fool I messed with them, and now I have no visual image.  What do those boxes represent, and how can I bring back the visual feature?

Thanks.

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Matt

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Re: DSP Analyzer - loss the waveform!
« Reply #1 on: December 12, 2011, 05:27:27 pm »

They're the frequencies to analyze.

Try these two values:
20
20K
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Matt Ashland, JRiver Media Center

fegelmej

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Re: DSP Analyzer - loss the waveform!
« Reply #2 on: December 12, 2011, 05:35:20 pm »

Ah, yes, I just didn't think to add the "k" 

Thanks, Matt
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rumos

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Re: DSP Analyzer - loss the waveform!
« Reply #3 on: December 31, 2011, 12:39:26 pm »

Hi there,

i have a question concerning the DSP Analyser too. Why is the analyser showing no constant frequency response when white noise is played?
What is the y-axis of the plot?

Thanks in advance :)
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Matt

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Re: DSP Analyzer - loss the waveform!
« Reply #4 on: December 31, 2011, 01:40:58 pm »

Hi there,

i have a question concerning the DSP Analyser too. Why is the analyser showing no constant frequency response when white noise is played?
What is the y-axis of the plot?

Thanks in advance :)

The y-axis is energy.  The x-axis is frequency using a logarithmic scale, just like human hearing.

Pink noise will be a flat line and white noise will show an upward slope.
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Matt Ashland, JRiver Media Center

Gandali

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Re: DSP Analyzer - loss the waveform!
« Reply #5 on: December 31, 2011, 02:01:08 pm »

Help!
can I expand the amplitude in the spectrum analyser? that's the vertical scale
 I can change the horizontal scale OK but there isn't a facility to change the vertical scale??
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rumos

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Re: DSP Analyzer - loss the waveform!
« Reply #6 on: December 31, 2011, 03:19:18 pm »

Hello Matt,

thank you very much for your answer  :) The y-axis is linear I assume.
When I look up the spectra in wiki, white noise should be a constant line along the whole logarithmic frequency axis.
Pink noise a downward slope. Or did I misunderstood something?

 
http://en.wikipedia.org/wiki/Colors_of_noise

In the meantime I did some research :) your y-axis is logarithmic too and adopted to the human hearing?
Then it's clear, that white noise is showing a upward slope. Could you add a label to the y-axis? Or like Gandali requested
the possibility of changing the scale?

PS: What's the meaning of the three different colored lines?
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Matt

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Re: DSP Analyzer - loss the waveform!
« Reply #7 on: January 02, 2012, 01:29:11 pm »

Each line on the y-axis is 3dB.

The different colored lines are the different channels (and one line is the sum of all channels).

Adding better labels is on our List of Good Intentions.
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rumos

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Re: DSP Analyzer - loss the waveform!
« Reply #8 on: January 03, 2012, 06:55:23 am »

Hi Matt,

thank you for your answer and amazing support!
So I will be patiently waiting for an update and in the meantime enjoying
your fine piece of software :)

Greetz Stefan
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