AXFX_CHORUS/AXFX_CHORUS_DPL2

Syntax

#include <revolution.h>
#include <revolution/axfx.h>

/*----------------------------------------------*
    For mono, stereo, surround
 *----------------------------------------------*/

typedef struct AXFX_CHORUS
{
    // do not touch these!
    AXFX_CHORUS_EXP  chorusInner;
    
    // user parameters
    u32        baseDelay;      // Base delay of chorus effect in ms
    u32        variation;      // Variation of base delay in ms
    u32        period;         // Period of variational oscillation in ms
    
} AXFX_CHORUS;

/*----------------------------------------------*
    For Dolby Pro Logic II
 *----------------------------------------------*/

typedef struct AXFX_CHORUS_DPL2
{
    // do not touch these!
    AXFX_CHORUS_EXP_DPL2  chorusInner;
    
    // user parameters
    u32        baseDelay;      // Base delay of chorus effect in ms
    u32        variation;      // Variation of base delay in ms
    u32        period;         // Period of variational oscillation in ms
    
} AXFX_CHORUS_DPL2;

Elements

baseDelay Length of delay line (=standard delay time of input audio). Specify a value as 1 <= value <= 50 (in msec).
variation Range over which the output position from the delay line (=delay time) is varied in time by the LFO. Specify a value as 0 <= value <= baseDelay (in msec). The output position varies in time along the range of (baseDelay - variation) to (baseDelay + variation).
period Fluctuation period of LFO. Specify a value as 500 <= value <= 10000 (in msec).

Description

When using Chorus, you must assign appropriate values to the various parameters of the AXFX_CHORUS or AXFX_CHORUS_DPL2 structure. Normally, the AXFX_CHORUS structure is used, while the AXFX_CHORUS_DPL2 structure is used with Dolby Pro Logic II.

See Also

Revision History

2007/08/06 Initial version.

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