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stk::Modulate Class Reference

STK periodic/random modulator. More...

#include <Modulate.h>

Inheritance diagram for stk::Modulate:
stk::Generator stk::Stk

Public Member Functions

 Modulate (void)
 Class constructor. More...
 
 ~Modulate (void)
 Class destructor.
 
void reset (void)
 Reset internal state.
 
void setVibratoRate (StkFloat rate)
 Set the periodic (vibrato) rate or frequency in Hz.
 
void setVibratoGain (StkFloat gain)
 Set the periodic (vibrato) gain.
 
void setRandomGain (StkFloat gain)
 Set the random modulation gain.
 
StkFloat lastOut (void) const
 Return the last computed output value.
 
StkFloat tick (void)
 Compute and return one output sample.
 
StkFramestick (StkFrames &frames, unsigned int channel=0)
 Fill a channel of the StkFrames object with computed outputs. More...
 
- Public Member Functions inherited from stk::Generator
 Generator (void)
 Class constructor.
 
unsigned int channelsOut (void) const
 Return the number of output channels for the class.
 
const StkFrameslastFrame (void) const
 Return an StkFrames reference to the last output sample frame.
 
- Public Member Functions inherited from stk::Stk
void ignoreSampleRateChange (bool ignore=true)
 A function to enable/disable the automatic updating of class data when the STK sample rate changes. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from stk::Stk
static StkFloat sampleRate (void)
 Static method that returns the current STK sample rate.
 
static void setSampleRate (StkFloat rate)
 Static method that sets the STK sample rate. More...
 
static std::string rawwavePath (void)
 Static method that returns the current rawwave path.
 
static void setRawwavePath (std::string path)
 Static method that sets the STK rawwave path.
 
static void swap16 (unsigned char *ptr)
 Static method that byte-swaps a 16-bit data type.
 
static void swap32 (unsigned char *ptr)
 Static method that byte-swaps a 32-bit data type.
 
static void swap64 (unsigned char *ptr)
 Static method that byte-swaps a 64-bit data type.
 
static void sleep (unsigned long milliseconds)
 Static cross-platform method to sleep for a number of milliseconds.
 
static bool inRange (StkFloat value, StkFloat min, StkFloat max)
 Static method to check whether a value is within a specified range.
 
static void handleError (const char *message, StkError::Type type)
 Static function for error reporting and handling using c-strings.
 
static void handleError (std::string message, StkError::Type type)
 Static function for error reporting and handling using c++ strings.
 
static void showWarnings (bool status)
 Toggle display of WARNING and STATUS messages.
 
static void printErrors (bool status)
 Toggle display of error messages before throwing exceptions.
 
- Static Public Attributes inherited from stk::Stk
static const StkFormat STK_SINT8
 
static const StkFormat STK_SINT16
 
static const StkFormat STK_SINT24
 
static const StkFormat STK_SINT32
 
static const StkFormat STK_FLOAT32
 
static const StkFormat STK_FLOAT64
 
- Protected Member Functions inherited from stk::Stk
 Stk (void)
 Default constructor.
 
virtual ~Stk (void)
 Class destructor.
 
void addSampleRateAlert (Stk *ptr)
 Add class pointer to list for sample rate change notification.
 
void removeSampleRateAlert (Stk *ptr)
 Remove class pointer from list for sample rate change notification.
 
void handleError (StkError::Type type) const
 Internal function for error reporting that assumes message in oStream_ variable.
 

Detailed Description

STK periodic/random modulator.

This class combines random and periodic modulations to give a nice, natural human modulation function.

by Perry R. Cook and Gary P. Scavone, 1995–2014.

Constructor & Destructor Documentation

stk::Modulate::Modulate ( void  )

Class constructor.

An StkError can be thrown if the rawwave path is incorrect.

Member Function Documentation

StkFrames & stk::Modulate::tick ( StkFrames frames,
unsigned int  channel = 0 
)
inlinevirtual

Fill a channel of the StkFrames object with computed outputs.

The channel argument must be less than the number of channels in the StkFrames argument (the first channel is specified by 0). However, range checking is only performed if STK_DEBUG is defined during compilation, in which case an out-of-range value will trigger an StkError exception.

Implements stk::Generator.

90 {
91 #if defined(_STK_DEBUG_)
92  if ( channel >= frames.channels() ) {
93  oStream_ << "Modulate::tick(): channel and StkFrames arguments are incompatible!";
94  handleError( StkError::FUNCTION_ARGUMENT );
95  }
96 #endif
97 
98  StkFloat *samples = &frames[channel];
99  unsigned int hop = frames.channels();
100  for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
101  *samples = Modulate::tick();
102 
103  return frames;
104 }

The documentation for this class was generated from the following file:

The Synthesis ToolKit in C++ (STK)
©1995--2014 Perry R. Cook and Gary P. Scavone. All Rights Reserved.