tinymodem::ToneOutput Class Reference

Writes tones of a SoundGenerator as 16 bit PCM with the requested number of channels and volume to a Print. More...

#include <ModemBase.h>

Collaboration diagram for tinymodem::ToneOutput:

Public Member Functions
void	setOutput (Print &out)
void	setGenerator (audio_tools::SoundGenerator< int16_t > &generator)
audio_tools::SoundGenerator< int16_t > &	generator ()
bool	begin (audio_tools::AudioInfo info, float volume)
	Starts the generator: volume is the amplitude (0.0 - 1.0).
void	tone (float freq, size_t nsamples)

Static Public Member Functions
static int32_t	amplitude (float volume)
	minimodem's conversion of the volume to a 16 bit amplitude

Protected Member Functions
int16_t	scale (int16_t sample)

Protected Attributes
Print *	p_print = nullptr
FSKToneGenerator< int16_t >	default_generator
audio_tools::SoundGenerator< int16_t > *	p_generator = &default_generator
int32_t	gain = 32767
int	channels = 1
int16_t	buffer [BUFFER_FRAMES *2]

Static Protected Attributes
static constexpr int	BUFFER_FRAMES = 64

Detailed Description

Writes tones of a SoundGenerator as 16 bit PCM with the requested number of channels and volume to a Print.

Copyright

GPLv3

Member Function Documentation

amplitude()

int32_t tinymodem::ToneOutput::amplitude ( float volume )

inlinestatic

minimodem's conversion of the volume to a 16 bit amplitude

begin()

bool tinymodem::ToneOutput::begin ( audio_tools::AudioInfo info, float volume )

inline

Starts the generator: volume is the amplitude (0.0 - 1.0).

generator()

audio_tools::SoundGenerator< int16_t > & tinymodem::ToneOutput::generator ( )

inline

scale()

int16_t tinymodem::ToneOutput::scale ( int16_t sample )

inlineprotected

setGenerator()

void tinymodem::ToneOutput::setGenerator ( audio_tools::SoundGenerator< int16_t > & generator )

inline

setOutput()

void tinymodem::ToneOutput::setOutput ( Print & out )

inline

tone()

void tinymodem::ToneOutput::tone ( float freq, size_t nsamples )

inline

Writes a tone (frequency 0 = silence) for the indicated number of samples (frames)

Member Data Documentation

buffer

int16_t tinymodem::ToneOutput::buffer[BUFFER_FRAMES *2]

protected

BUFFER_FRAMES

int tinymodem::ToneOutput::BUFFER_FRAMES = 64

staticconstexprprotected

channels

int tinymodem::ToneOutput::channels = 1

protected

default_generator

FSKToneGenerator<int16_t> tinymodem::ToneOutput::default_generator

protected

gain

int32_t tinymodem::ToneOutput::gain = 32767

protected

p_generator

audio_tools::SoundGenerator<int16_t>* tinymodem::ToneOutput::p_generator = &default_generator

protected

p_print

Print* tinymodem::ToneOutput::p_print = nullptr

protected

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

• src/modem/ModemBase.h