AXSetVoiceLpfCoefs

C Specification

#include <revolution.h>

void AXSetVoiceLpfCoefs(AXVPB *pvpb, u16 a0, u16 b0);

Arguments

*AXVPB pvpb**	Pointer to the specified voice.
u16 a0	Fixed-point (one bit integer, 15 bits fraction) coefficient.
u16 b0	Fixed-point (one bit integer, 15 bits fraction) coefficient.

Return Values

None.

Description

The AXSetVoiceLpfCoefs() function sets new low-pass filter coefficients while a voice is running. This function also asserts the appropriate synchronization flags in axvpb.sync.

Use AXSetVoiceLpf to activate or deactivate the low-pass filter.

See the low-pass filter parameter block definition (axvpb.pb.lpf) for details on generating coefficients. Or you can get the coefficients of your specified cut-off frequency by using AXGetLpfCoefs().

Revision History

2006/03/01 Initial version.