addsndfile::resampled_soundfile_t Class Reference

Reads sound from file and resamples it if necessary and wanted. More...

Inheritance diagram for addsndfile::resampled_soundfile_t:

Public Member Functions
	resampled_soundfile_t (const std::string &name, float mha_sampling_rate, addsndfile_resampling_mode_t resampling_mode)
	Reads sound from file and resamples if necessary and wanted. More...
Public Member Functions inherited from addsndfile::waveform_proxy_t
	waveform_proxy_t (unsigned frames, unsigned channels)
Public Member Functions inherited from MHASignal::waveform_t
	waveform_t (const unsigned int &frames, const unsigned int &channels)
	constructor of waveform_t More...
	waveform_t (const mhaconfig_t &cf)
	Constructor to create a waveform from plugin configuration. More...
	waveform_t (const mha_wave_t &src)
	Copy contructor for mha_wave_t source. More...
	waveform_t (const MHASignal::waveform_t &src)
	Copy contructor. More...
	waveform_t (const std::vector< mha_real_t > &src)
	Copy contructor for std::vector<mha_real_t> source. More...
virtual	~waveform_t (void)
std::vector< mha_real_t >	flatten () const
	operator std::vector< mha_real_t > () const
void	operator= (const mha_real_t &v)
mha_real_t &	operator[] (unsigned int k)
const mha_real_t &	operator[] (unsigned int k) const
mha_real_t &	value (unsigned int t, unsigned int ch)
	Element accessor. More...
mha_real_t &	operator() (unsigned int t, unsigned int ch)
	Element accessor. More...
const mha_real_t &	value (unsigned int t, unsigned int ch) const
	Constant element accessor. More...
const mha_real_t &	operator() (unsigned int t, unsigned int ch) const
	Constant element accessor. More...
mha_real_t	sum (const unsigned int &a, const unsigned int &b)
	sum of all elements between [a,b) in all channels More...
mha_real_t	sum (const unsigned int &a, const unsigned int &b, const unsigned int &ch)
	sum of all elements between [a,b) in channel ch More...
mha_real_t	sum ()
	sum of all elements More...
mha_real_t	sumsqr ()
	sum of square of all elements More...
mha_real_t	sum_channel (const unsigned int &)
	return sum of all elements in one channel More...
void	assign (const unsigned int &k, const unsigned int &ch, const mha_real_t &val)
	set frame "k" in channel "ch" to value "val" More...
void	assign (const mha_real_t &)
	set all elements to value More...
void	assign_frame (const unsigned int &k, const mha_real_t &val)
	assign value "val" to frame k in all channels More...
void	assign_channel (const unsigned int &c, const mha_real_t &val)
	assign value "val" to channel ch in all frames More...
void	copy (const std::vector< mha_real_t > &v)
void	copy (const mha_wave_t &)
	copy data from source into current waveform More...
void	copy (const mha_wave_t *)
void	copy_channel (const mha_wave_t &, unsigned int, unsigned int)
	Copy one channel of a given waveform signal to a target channel. More...
void	copy_from_at (unsigned int, unsigned int, const mha_wave_t &, unsigned int)
	Copy part of the source signal into part of this waveform object. More...
void	export_to (mha_wave_t &)
	copy data into allocated mha_wave_t structure More...
void	limit (const mha_real_t &min, const mha_real_t &max)
	limit target to range [min,max] More...
void	power (const waveform_t &)
	transform waveform signal (in Pa) to squared signal (in W/m^2) More...
void	powspec (const mha_spec_t &)
	get the power spectrum (in W/m^2) from a complex spectrum More...
void	scale (const unsigned int &a, const unsigned int &b, const unsigned int &ch, const mha_real_t &val)
	scale section [a,b) in channel "ch" by "val" More...
void	scale (const unsigned int &k, const unsigned int &ch, const mha_real_t &val)
	scale one element More...
void	scale_channel (const unsigned int &, const mha_real_t &)
	scale one channel of target with a scalar More...
void	scale_frame (const unsigned int &, const mha_real_t &)
unsigned int	get_size () const

Additional Inherited Members
Public Attributes inherited from mha_wave_t
mha_real_t *	buf
	signal buffer More...
unsigned int	num_channels
	number of channels More...
unsigned int	num_frames
	number of frames in each channel More...
mha_channel_info_t *	channel_info
	detailed channel description More...
Private Member Functions inherited from MHASndFile::sf_wave_t
	sf_wave_t (const std::string &fname, mha_real_t peaklevel_db, unsigned int maxlen=std::numeric_limits< unsigned int >::max(), unsigned int startpos=0, std::vector< int > channel_map=std::vector< int >())
Private Member Functions inherited from MHASignal::waveform_t
	waveform_t (const unsigned int &frames, const unsigned int &channels)
	constructor of waveform_t More...
	waveform_t (const mhaconfig_t &cf)
	Constructor to create a waveform from plugin configuration. More...
	waveform_t (const mha_wave_t &src)
	Copy contructor for mha_wave_t source. More...
	waveform_t (const MHASignal::waveform_t &src)
	Copy contructor. More...
	waveform_t (const std::vector< mha_real_t > &src)
	Copy contructor for std::vector<mha_real_t> source. More...
virtual	~waveform_t (void)
std::vector< mha_real_t >	flatten () const
	operator std::vector< mha_real_t > () const
void	operator= (const mha_real_t &v)
mha_real_t &	operator[] (unsigned int k)
const mha_real_t &	operator[] (unsigned int k) const
mha_real_t &	value (unsigned int t, unsigned int ch)
	Element accessor. More...
mha_real_t &	operator() (unsigned int t, unsigned int ch)
	Element accessor. More...
const mha_real_t &	value (unsigned int t, unsigned int ch) const
	Constant element accessor. More...
const mha_real_t &	operator() (unsigned int t, unsigned int ch) const
	Constant element accessor. More...
mha_real_t	sum (const unsigned int &a, const unsigned int &b)
	sum of all elements between [a,b) in all channels More...
mha_real_t	sum (const unsigned int &a, const unsigned int &b, const unsigned int &ch)
	sum of all elements between [a,b) in channel ch More...
mha_real_t	sum ()
	sum of all elements More...
mha_real_t	sumsqr ()
	sum of square of all elements More...
mha_real_t	sum_channel (const unsigned int &)
	return sum of all elements in one channel More...
void	assign (const unsigned int &k, const unsigned int &ch, const mha_real_t &val)
	set frame "k" in channel "ch" to value "val" More...
void	assign (const mha_real_t &)
	set all elements to value More...
void	assign_frame (const unsigned int &k, const mha_real_t &val)
	assign value "val" to frame k in all channels More...
void	assign_channel (const unsigned int &c, const mha_real_t &val)
	assign value "val" to channel ch in all frames More...
void	copy (const std::vector< mha_real_t > &v)
void	copy (const mha_wave_t &)
	copy data from source into current waveform More...
void	copy (const mha_wave_t *)
void	copy_channel (const mha_wave_t &, unsigned int, unsigned int)
	Copy one channel of a given waveform signal to a target channel. More...
void	copy_from_at (unsigned int, unsigned int, const mha_wave_t &, unsigned int)
	Copy part of the source signal into part of this waveform object. More...
void	export_to (mha_wave_t &)
	copy data into allocated mha_wave_t structure More...
void	limit (const mha_real_t &min, const mha_real_t &max)
	limit target to range [min,max] More...
void	power (const waveform_t &)
	transform waveform signal (in Pa) to squared signal (in W/m^2) More...
void	powspec (const mha_spec_t &)
	get the power spectrum (in W/m^2) from a complex spectrum More...
void	scale (const unsigned int &a, const unsigned int &b, const unsigned int &ch, const mha_real_t &val)
	scale section [a,b) in channel "ch" by "val" More...
void	scale (const unsigned int &k, const unsigned int &ch, const mha_real_t &val)
	scale one element More...
void	scale_channel (const unsigned int &, const mha_real_t &)
	scale one channel of target with a scalar More...
void	scale_frame (const unsigned int &, const mha_real_t &)
unsigned int	get_size () const
Private Attributes inherited from mha_wave_t
mha_real_t *	buf
	signal buffer More...
unsigned int	num_channels
	number of channels More...
unsigned int	num_frames
	number of frames in each channel More...
mha_channel_info_t *	channel_info
	detailed channel description More...

Detailed Description

Reads sound from file and resamples it if necessary and wanted.

Sound data can then be used by addsndfile.

Constructor & Destructor Documentation

resampled_soundfile_t()

addsndfile::resampled_soundfile_t::resampled_soundfile_t	(	const std::string &	name,
		float	mha_sampling_rate,
		addsndfile_resampling_mode_t	resampling_mode
	)

Reads sound from file and resamples if necessary and wanted.

If the sound file does not specify a sampling rate, then the sound data is always used without resampling.

Parameters

name	Sound file name
mha_sampling_rate	The sampling rate of the MHA signal processing at the point of the addsndfile plugin
resampling_mode	DONT_RESAMPLE_STRICT: Do not resample, just use the samples from the sound file at the current sample rate, even if the sample rate of the sound file differs. DONT_RESAMPLE_PERMISSIVE: Do not resample, if the sample rate of the MHA differs from the sample rate of the sound file, raise an error. DO_RESAMPLE: Resample.

Exceptions

MHA_Error

If the sampling rate of the file does not match the sampling rate of the MHA and DONT_RESAMPLE_STRICT was requested. If resampling failed (e.g. due to non-rational quotient of MHA sampling rate and sound file sampling rate).

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

• addsndfile.cpp