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Hello

I’m trying to get the average of Bass values, Medium values and Treble values.

[code:84n1yjyn] BassTotal = MediumTotal = TrebleTotal = 0;

``````FMOD_System_GetSpectrum(System, Spectrum, 512, 0,FMOD_DSP_FFT_WINDOW_TRIANGLE);

for (i = 0; i&lt;=170; i++)
BassTotal += Spectrum[i];

Bass = (double)(BassTotal)/170;
cerr &lt;&lt; &quot;Bass &quot; &lt;&lt; Bass &lt;&lt; endl;

for (i = 171; i&lt;= 342; i++)
MediumTotal += Spectrum[i];

Medium = (double)(MediumTotal)/172;
cerr &lt;&lt; &quot;Medium &quot; &lt;&lt; Bass &lt;&lt; endl;

for (i = 342; i&lt;= 512; i++)
TrebleTotal += Spectrum[i];

Treble = (double)(TrebleTotal)/170;
cerr &lt;&lt; &quot;Treble &quot; &lt;&lt; Bass &lt;&lt; endl;[/code:84n1yjyn]
``````

I always get this :

[code:84n1yjyn]Bass 1.50737e-007
Medium 1.50737e-007
Treble 1.50737e-007[/code:84n1yjyn]

It never changes…
Before, i was doing it under Fmod 3.75, and i had no problems…

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Is it because you are printing out Bass each time?

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I don’t understand what is the problem to print out Bass each time….

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Because you are printing the same value, 3 times, modify the code to print out bass, medium and then treble, and see what the values are.

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Ah ok, i see, but now, During all the music played, i already get :

[code:1x30p9pi]Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007

Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007

Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007

Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007

Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007

Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007

Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007

Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007

Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007

Bass 1.50737e-007
Medium 3.58174e-011
Treble 1.50758e-007
[/code:1x30p9pi]
:-/

EDIT : I tried the program under Kubuntu, and there is no problem, i get good output. Is there a problem under Windows to get spectrums ??
I tried to get Bass Medium and Treble with no music, and i get exactelly the same output.

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I change the code to this :

[code:3rip4h6g] FMOD_Channel_GetSpectrum(Channel, Spectrum, 512, 0, FMOD_DSP_FFT_WINDOW_TRIANGLE);

``````for (int i = 0; i&lt;=170; i++)
BassTotal += Spectrum[i];

double Bass = (double)(BassTotal)/170;
cerr &lt;&lt; &quot;Bass &quot; &lt;&lt; Bass &lt;&lt; endl;

for (int i = 171; i&lt;= 342; i++)
MediumTotal += Spectrum[i];

double Medium = (double)(MediumTotal)/172;
cerr &lt;&lt; &quot;Medium &quot; &lt;&lt; Medium &lt;&lt; endl;

for (int i = 342; i&lt;= 512; i++)
TrebleTotal += Spectrum[i];

double Treble = (double)(TrebleTotal)/170;
cerr &lt;&lt; &quot;Treble &quot; &lt;&lt; Treble &lt;&lt; endl;[/code:3rip4h6g]
``````

But now, I alwais get this :

[code:3rip4h6g]Bass -1.#QNAN
Medium -1.#QNAN
Treble -1.#QNAN
Bass -1.#QNAN
Medium -1.#QNAN
Treble -1.#QNAN
Bass -1.#QNAN
Medium -1.#QNAN
Treble -1.#QNAN
Bass -1.#QNAN
Medium -1.#QNAN
Treble -1.#QNAN
Bass -1.#QNAN
Medium -1.#QNAN
Treble -1.#QNAN
Bass -1.#QNAN
Medium -1.#QNAN
Treble -1.#QNAN
Bass -1.#QNAN
Medium -1.#QNAN
Treble -1.#QNAN[/code:3rip4h6g]

What does -1.#QNAN means ??? 😮

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Have you used a debugger to see what you’re actually adding to your number?

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