r8b::CDSPResampler16IR Class Reference

The resampler class for 16-bit impulse response resampling. More...

#include <CDSPResampler.h>

Inheritance diagram for r8b::CDSPResampler16IR:

Public Member Functions
	CDSPResampler16IR (const double SrcSampleRate, const double DstSampleRate, const int aMaxInLen, const double ReqTransBand=2.0)
	Initializes the 16-bit impulse response resampler. See the r8b::CDSPResampler class for details.
Public Member Functions inherited from r8b::CDSPResampler
	CDSPResampler (const double SrcSampleRate, const double DstSampleRate, const int aMaxInLen, const double ReqTransBand=2.0, const double ReqAtten=206.91, const EDSPFilterPhaseResponse ReqPhase=fprLinearPhase)
	Initalizes the resampler object.
virtual void	clear ()
	Clears (resets) the state of this object and returns it to the state after construction.
virtual int	getInLenBeforeOutPos (const int ReqOutPos) const
	Returns the number of input samples required to advance to the specified output sample position (so that the next process() call passes this output position).
int	getInLenBeforeOutStart (const int ReqOutPos=0)
	Returns the number of input samples required to advance to the specified output sample position (so that the next process() call passes this output position), starting at the cleared or after-construction state of this object.
int	getInputRequiredForOutput (const int ReqOutSamples) const
	Returns the number of input samples required to produce at least the specified number of output samples, starting at the cleared or after-construction state of this object.
virtual int	getLatency () const
	Return the latency, in samples, which is present in the output signal.
virtual double	getLatencyFrac () const
	Returns fractional latency, in samples, which is present in the output signal.
virtual int	getMaxOutLen (const int) const
	This implementation ignores the supplied parameter and returns the maximal output buffer length that depends on the MaxInLen supplied to the constructor.
template<typename Tin, typename Tout>
void	oneshot (const Tin *ip, int iplen, Tout *op, int oplen)
	Performs resampling of an input sample buffer of the specified length in the "one-shot" mode.
virtual int	process (double *ip0, int l, double *&op0)
	Performs sample rate conversion.

Detailed Description

The resampler class for 16-bit impulse response resampling.

This class defines resampling parameters suitable for 16-bit impulse response resampling, using linear-phase low-pass filter. Impulse responses are non-dynamic signals, and thus need resampler with a lesser SNR. See the r8b::CDSPResampler class for details.

Constructor & Destructor Documentation

CDSPResampler16IR()

r8b::CDSPResampler16IR::CDSPResampler16IR	(	const double	SrcSampleRate,
		const double	DstSampleRate,
		const int	aMaxInLen,
		const double	ReqTransBand = 2.0 )

Initializes the 16-bit impulse response resampler. See the r8b::CDSPResampler class for details.

Parameters

SrcSampleRate	Source signal's sample rate.
DstSampleRate	Destination signal's sample rate.
aMaxInLen	The maximal planned length of the input buffer (in samples) that will be passed to the resampler.
ReqTransBand	Required transition band, in percent.