Firelight Technologies FMOD Studio API

FMOD_DSP_FFT

Parameter types for the FMOD_DSP_TYPE_FFT dsp effect.

C/C++ Syntax

typedef enum {
  FMOD_DSP_FFT_WINDOWSIZE,
  FMOD_DSP_FFT_WINDOWTYPE,
  FMOD_DSP_FFT_SPECTRUMDATA,
  FMOD_DSP_FFT_DOMINANT_FREQ
} FMOD_DSP_FFT;

JavaScript Syntax

FMOD.DSP_FFT_WINDOWSIZE
FMOD.DSP_FFT_WINDOWTYPE
FMOD.DSP_FFT_SPECTRUMDATA
FMOD.DSP_FFT_DOMINANT_FREQ

Values

FMOD_DSP_FFT_WINDOWSIZE

(Type:int) - [r/w] Must be a power of 2 between 128 and 16384. 128, 256, 512, 1024, 2048, 4096, 8192, 16384 are accepted. Default = 2048.

FMOD_DSP_FFT_WINDOWTYPE

(Type:int) - [r/w] Refer to FMOD_DSP_FFT_WINDOW enumeration. Default = FMOD_DSP_FFT_WINDOW_HAMMING.

FMOD_DSP_FFT_SPECTRUMDATA

(Type:data) - [r] Returns the current spectrum values between 0 and 1 for each 'fft bin'. Cast data to FMOD_DSP_PARAMETER_DATA_TYPE_FFT. Divide the niquist rate by the window size to get the hz value per entry.

FMOD_DSP_FFT_DOMINANT_FREQ

(Type:float) - [r] Returns the dominant frequencies for each channel.

Remarks

Set the attributes for the spectrum analysis with FMOD_DSP_FFT_WINDOWSIZE and FMOD_DSP_FFT_WINDOWTYPE, and retrieve the results with FMOD_DSP_FFT_SPECTRUM and FMOD_DSP_FFT_DOMINANT_FREQ. FMOD_DSP_FFT_SPECTRUM stores its data in the FMOD_DSP_PARAMETER_DATA_TYPE_FFT. You will need to cast to this structure to get the right data.

See Also

• DSP::setParameterFloat
• DSP::getParameterFloat
• DSP::setParameterInt
• DSP::getParameterInt
• DSP::setParameterData
• DSP::getParameterData
• FMOD_DSP_TYPE
• FMOD_DSP_FFT_WINDOW

Version 1.10.03 Built on Feb 1, 2018