Nsound::Hat Class Reference

Class Hat. More...

#include <Nsound/Hat.h>

Inheritance diagram for Nsound::Hat:

Public Member Functions
	Hat (const float64 &sample_rate)
	Creates a Hat. More...
	Hat (const Hat &copy)
	Copy constructor. More...
	~Hat ()
	Destructor. More...
Hat &	operator= (const Hat &rhs)
	Assignment. More...
AudioStream	play ()
	Plays a demo for this instrument. More...
AudioStream	play (const float64 &duration, const float64 &tune)
	Static play method with option of Hat open or closed. More...
AudioStream	play (const float64 &duration, const float64 &tune, boolean is_closed)
	Static play method with option of Hat open or closed. More...
std::string	getInfo ()
	Nsound::Hat information. More...

Protected Attributes
Square *	square_
FilterHighPassIIR *	hpf_
float64	sample_rate_

Detailed Description

Class Hat.

Simulates a Hat Hit. Based on a Csound Hat by Steven Cook.

source: http://www.csounds.com/cook/

Sound Generators: 808HiHat.orc 808HiHat.sco

Definition at line 61 of file Hat.h.

Constructor & Destructor Documentation

Hat::Hat

(

const float64 &

sample_rate

)

Creates a Hat.

Definition at line 46 of file Hat.cc.

References hpf_, Nsound::Instrument::sample_rate_, and square_.

    :
    Instrument(sample_rate),
    square_(NULL),
    hpf_(NULL)
{
    square_ = new Square(sample_rate_);
    hpf_ = new FilterHighPassIIR(sample_rate_, 2, 4872.0, 0.05);
}

Hat::Hat

(

const Hat &

copy

)

Copy constructor.

Definition at line 58 of file Hat.cc.

References hpf_, and square_.

    :
    Instrument(rhs.sample_rate_),
    square_(NULL),
    hpf_(NULL)
{
    square_ = new Square(*rhs.square_);
    hpf_ = new FilterHighPassIIR(*rhs.hpf_);
}

Hat::~Hat

(

)

Destructor.

Definition at line 70 of file Hat.cc.

References hpf_, and square_.

{
    delete square_;
    delete hpf_;
}

Member Function Documentation

Hat & Hat::operator=

(

const Hat &

rhs

)

Assignment.

Definition at line 79 of file Hat.cc.

References hpf_, Nsound::Instrument::sample_rate_, and square_.

{
    delete square_;
    delete hpf_;

    sample_rate_ = rhs.sample_rate_;
    square_ = new Square(*rhs.square_);
    hpf_ = new FilterHighPassIIR(*rhs.hpf_);

    return *this;
}

AudioStream Hat::play ( )

virtual

Plays a demo for this instrument.

Implements Nsound::Instrument.

Definition at line 93 of file Hat.cc.

References Nsound::AudioStream::add(), and Nsound::Instrument::sample_rate_.

Referenced by my_main(), and play().

{
    AudioStream y(sample_rate_, 1);

    float64 offset = 0.124;

    y << play(1.0, 1.0, true);

    //        duration, tune, is_open
//~    y.add(play(1.0,      1.0,  true),  0 * offset);
    y.add(play(1.0,      1.0,  true),  1 * offset);
    y.add(play(1.0,      1.0,  false), 2 * offset);
    y.add(play(1.0,      1.0,  true) , 3 * offset);

    y.add(play(1.0,      1.0,  true) , 4 * offset);
    y.add(play(1.0,      1.0,  true) , 5 * offset);
    y.add(play(1.0,      1.0,  true) , 6  * offset);
    y.add(play(1.0,      1.0,  false), 7  * offset);

    y.add(play(1.0,      1.0,  true) , 8  * offset);
    y.add(play(1.0,      1.0,  true) , 9  * offset);
    y.add(play(1.0,      1.0,  false), 10 * offset);
    y.add(play(1.0,      1.0,  true) , 11 * offset);

    y.add(play(1.0,      1.0,  true) , 12 * offset);
    y.add(play(1.0,      1.0,  true) , 13 * offset);
    y.add(play(1.0,      1.0,  true) , 14 * offset);
    y.add(play(1.0,      1.0,  false), 15 * offset);

    y.add(play(1.0,      1.0,  true) , 16 * offset);
    y.add(play(1.0,      1.0,  true) , 17 * offset);
    y.add(play(1.0,      1.0,  false), 18 * offset);
    y.add(play(1.0,      1.0,  true) , 19 * offset);

    y.add(play(1.0,      1.0,  true) , 20 * offset);
    y.add(play(1.0,      1.0,  true) , 21 * offset);
    y.add(play(1.0,      1.0,  true) , 22 * offset);
    y.add(play(1.0,      1.0,  false), 23 * offset);

    y.add(play(1.0,      0.9,  true) , 24 * offset);
    y.add(play(1.0,      0.8,  true) , 25 * offset);
    y.add(play(1.0,      0.7,  true) , 26 * offset);
    y.add(play(1.0,      0.6,  true) , 27 * offset);

    y.add(play(1.0,      0.5,  true) , 28 * offset);
    y.add(play(1.0,      0.4,  true) , 29 * offset);
    y.add(play(1.0,      0.3,  true) , 30 * offset);
    y.add(play(1.0,      0.2,  true) , 31 * offset);

    return y;
}

AudioStream Nsound::Hat::play ( const float64 &  duration, const float64 &  tune  )

inlinevirtual

Static play method with option of Hat open or closed.

Implements Nsound::Instrument.

Definition at line 84 of file Hat.h.

References play().

    { return play(duration, tune, true); };

AudioStream Hat::play	(	const float64 &	duration,
		const float64 &	tune,
		boolean	is_closed
	)

Static play method with option of Hat open or closed.

Definition at line 149 of file Hat.cc.

References Nsound::Generator::drawDecay(), Nsound::Generator::drawLine(), Nsound::FilterHighPassIIR::filter(), Nsound::Generator::generate(), hpf_, Nsound::Instrument::sample_rate_, Nsound::Generator::silence(), and square_.

{
    float64 play_duration = duration;
    float64 silence_duration = 0.0;

    float64 env_offset = 0.55 * play_duration;

    if(is_closed)
    {
        play_duration *= 0.06;
        silence_duration = duration - play_duration;
        env_offset = 0.0;
    }

    float64 frequency = tune * 530.0;

    Buffer env = square_->drawLine(0.0005, 0.1, 1.0)
              << square_->drawDecay(play_duration-0.0005 - env_offset, 7.0)
              << square_->silence(silence_duration + env_offset);

    AudioStream out(sample_rate_, 1);

    out << square_->generate(play_duration, frequency);

    out += square_->generate(play_duration, frequency * 1.5038);
    out += square_->generate(play_duration, frequency * 1.6132);
    out += square_->generate(play_duration, frequency * 1.9642);
    out += square_->generate(play_duration, frequency * 2.5321);
    out += square_->generate(play_duration, frequency * 2.7547);

    out /= 2.0;

    out = hpf_->filter(out);
    out = hpf_->filter(out);

    return out * env;
}

std::string Nsound::Hat::getInfo ( )

inlinevirtual

Nsound::Hat information.

Implements Nsound::Instrument.

Definition at line 97 of file Hat.h.

    {
        return
            "Nsound::Hat by Nick Hilton on 2009-11-13\n"
            "Simulates a Hat Hit.  Based on a Csound Hat by Steven Cook.\n"
            "source: http://www.csounds.com/cook/\n";
    };

Member Data Documentation

Square* Nsound::Hat::square_

protected

Definition at line 103 of file Hat.h.

Referenced by Hat(), operator=(), play(), and ~Hat().

FilterHighPassIIR* Nsound::Hat::hpf_

protected

Definition at line 108 of file Hat.h.

Referenced by Hat(), operator=(), play(), and ~Hat().

float64 Nsound::Instrument::sample_rate_

protectedinherited

Definition at line 76 of file Instrument.h.

Referenced by Hat(), operator=(), Nsound::Clarinet::play(), Nsound::DrumBD01::play(), Nsound::FluteSlide::play(), Nsound::GuitarBass::play(), Nsound::DrumKickBass::play(), Nsound::OrganPipe::play(), and play().

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

• Nsound/Hat.h
• Nsound/Hat.cc