SimpleGate.cpp

/*
 *  Simple Gate (source)
 *
 *  File        : SimpleGate.cpp
 *  Library     : SimpleSource
 *  Version     : 1.12
 *  Implements  : SimpleGate, SimpleGateRms
 *
 *  2006, ChunkWare Music Software, OPEN-SOURCE
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a
 *  copy of this software and associated documentation files (the "Software"),
 *  to deal in the Software without restriction, including without limitation
 *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
 *  and/or sell copies of the Software, and to permit persons to whom the
 *  Software is furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 *  DEALINGS IN THE SOFTWARE.
 */
 
#include "SimpleGate.h"
 
namespace chunkware_simple
{
    //-------------------------------------------------------------
    SimpleGate::SimpleGate()
        : AttRelEnvelope( 1.0, 100.0 )
        , threshdB_( 0.0 )
        , thresh_( 1.0 )
        , env_( DC_OFFSET )
    {
    }
 
    //-------------------------------------------------------------
    void SimpleGate::setThresh( double dB )
    {
        threshdB_ = dB;
        thresh_ = dB2lin( dB );
    }
 
    //-------------------------------------------------------------
    void SimpleGate::initRuntime( void )
    {
        env_ = DC_OFFSET;
    }
 
    //-------------------------------------------------------------
    // simple gate with RMS detection
    //-------------------------------------------------------------
    SimpleGateRms::SimpleGateRms()
        : ave_( 5.0 )
        , aveOfSqrs_( DC_OFFSET )
    {
    }
 
    //-------------------------------------------------------------
    void SimpleGateRms::setSampleRate( double sampleRate )
    {
        SimpleGate::setSampleRate( sampleRate );
        ave_.setSampleRate( sampleRate );
    }
 
    //-------------------------------------------------------------
    void SimpleGateRms::setWindow( double ms )
    {
        ave_.setTc( ms );
    }
 
    //-------------------------------------------------------------
    void SimpleGateRms::initRuntime( void )
    {
        SimpleGate::initRuntime();
        aveOfSqrs_ = DC_OFFSET;
    }
 
}   // end namespace chunkware_simple