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Functions
NDS: ARM9 Reverb

Functions

static mm_word mmReverbBufferSize (mm_word bit_depth, mm_word sampling_rate, mm_word delay)
 This calculates the amount of memory needed for the reverb buffer.
 
void mmReverbConfigure (mm_reverb_cfg *config)
 Configures the reverb system.
 
void mmReverbDisable (void)
 Disables the reverb system and restores the channels.
 
void mmReverbEnable (void)
 Enables the reverb system.
 
void mmReverbStart (mm_reverbch channels)
 Starts reverb output in the selected channels.
 
void mmReverbStop (mm_reverbch channels)
 Stops reverb output for the selected channels.
 

Detailed Description

Function Documentation

◆ mmReverbBufferSize()

static mm_word mmReverbBufferSize ( mm_word  bit_depth,
mm_word  sampling_rate,
mm_word  delay 
)
inlinestatic

This calculates the amount of memory needed for the reverb buffer.

It calculates the reverb buffer size based on bit depth, delay and sampling rate.

Parameters
bit_depthMay be 8 or 16 to represent 8-bit or 16-bit bit-depth.
sampling_rateSampling rate in Hertz.
delayReverb delay value in milliseconds.
Returns
Amount of memory required, measured in words (32-bit units).

◆ mmReverbConfigure()

void mmReverbConfigure ( mm_reverb_cfg config)

Configures the reverb system.

See the reverb tutorial for a full explanation of the configuration structure.

Parameters
configReverb configuration structure.

◆ mmReverbDisable()

void mmReverbDisable ( void  )

Disables the reverb system and restores the channels.

Note: In the interpolated audio mode, the channels cannot be restored by this function and the mixer must be reset instead.

◆ mmReverbEnable()

void mmReverbEnable ( void  )

Enables the reverb system.

This function locks 2 channels (1 & 3) to reserve them for reverb output. This must be called before the configuration functions can be used.

If music is playing when this function is used, a note or two may be cut due to the locking.

◆ mmReverbStart()

void mmReverbStart ( mm_reverbch  channels)

Starts reverb output in the selected channels.

Parameters
channelsReverb channel selection. Can use MMRC_LEFT or MMRC_RIGHT or (MMRC_LEFT | MMRC_RIGHT).

◆ mmReverbStop()

void mmReverbStop ( mm_reverbch  channels)

Stops reverb output for the selected channels.

Can select left output, right output, or both.

Parameters
channelsReverb channel selection.