音声入力および振幅による音区間検出に関する定義 [詳細]

#include <sent/stddefs.h>
#include <sent/speech.h>

データ構造
struct	DS_FILTER
	down sampling filter [詳細]
struct	DS_BUFFER
	down sampling data [詳細]
struct	ZEROCROSS
	Work area for zero-cross computation. [詳細]
マクロ定義
#define	DEFAULT_WSTEP 1000
	Default unit size of speech input segment in bytes.
#define	SUPPORTED_WAVEFILE_FORMAT "RAW(BE),WAV,AU,SND,NIST,ADPCM and more"
	String describing the list of supported wave file formats.
#define	ZMEANSAMPLES 48000
	Number of samples from beggining of input to be used for computing the zero mean of source channel (for microphone/network input).
#define	DS_RBSIZE 512
	Filter size.
#define	DS_BUFSIZE 256
	Work area buffer size for x[].
#define	DS_BUFSIZE_Y 512
	Work area buffer size for y[].
#define	ZC_UNDEF 2
	Undefined mark for zerocross.
#define	ZC_POSITIVE 1
	Positive mark used for zerocross.
#define	ZC_NEGATIVE -1
	Negative mark used for zerocross.
列挙型
enum	{ INPUT_WAVEFORM, INPUT_VECTOR }
	Speech input type.
enum	{ SP_RAWFILE, SP_MIC, SP_ADINNET, SP_MFCFILE, SP_NETAUDIO, SP_STDIN, SP_MFCMODULE }
	Speech input source. [詳細]
enum	{ SP_INPUT_DEFAULT, SP_INPUT_ALSA, SP_INPUT_OSS, SP_INPUT_ESD, SP_INPUT_PULSEAUDIO }
	Input device.
関数
boolean	adin_mic_standby (int freq, void *arg)
	Device initialization: check machine capability.
boolean	adin_mic_begin (char *pathname)
	Start recording.
boolean	adin_mic_end ()
	Stop recording.
int	adin_mic_read (SP16 *buf, int sampnum)
	Read samples from device.
char *	adin_mic_input_name ()
	Function to return current input source device name.
boolean	adin_alsa_standby (int freq, void *arg)
	Device initialization: check machine capability.
boolean	adin_alsa_begin (char *pathname)
	Start recording.
boolean	adin_alsa_end ()
	Stop recording.
int	adin_alsa_read (SP16 *buf, int sampnum)
	Read samples from device.
char *	adin_alsa_input_name ()
	Function to return current input source device name.
boolean	adin_oss_standby (int freq, void *arg)
	Device initialization: check device capability and open for recording.
boolean	adin_oss_begin (char *pathname)
	Start recording.
boolean	adin_oss_end ()
	Stop recording.
int	adin_oss_read (SP16 *buf, int sampnum)
	Read samples from device.
char *	adin_oss_input_name ()
	Function to return current input source device name.
boolean	adin_esd_standby (int freq, void *arg)
	Connection initialization: check connectivity and open for recording.
boolean	adin_esd_begin (char *pathname)
	Start recording.
boolean	adin_esd_end ()
	Stop recording.
int	adin_esd_read (SP16 *buf, int sampnum)
	Read samples from the daemon.
char *	adin_esd_input_name ()
	Function to return current input source device name.
boolean	adin_pulseaudio_standby (int freq, void *arg)
	Connection initialization: check connectivity and open for recording.
boolean	adin_pulseaudio_begin (char *pathname)
	Start recording.
boolean	adin_pulseaudio_end ()
	Stop recording.
int	adin_pulseaudio_read (SP16 *buf, int sampnum)
	Read samples from device.
char *	adin_pulseaudio_input_name ()
	Function to return current input source device name.
boolean	adin_netaudio_standby (int freq, void *arg)
	Connection initialization: check connectivity and open for recording.
boolean	adin_netaudio_begin (char *pathname)
	Start recording.
boolean	adin_netaudio_end ()
	Stop recording.
int	adin_netaudio_read (SP16 *buf, int sampnum)
	Read samples from the daemon.
char *	adin_netaudio_input_name ()
	Function to return current input source device name.
int	NA_standby (int, char *)
	Initialize NetAudio device.
void	NA_start ()
	Begin recording.
void	NA_stop ()
	Pause the recording.
int	NA_read (SP16 *buf, int sampnum)
	Read samples from NetAudio port.
boolean	adin_file_standby (int freq, void *arg)
	Initialization: if listfile is specified, open it here.
boolean	adin_file_begin (char *pathname)
	Begin reading audio data from a file.
int	adin_file_read (SP16 *buf, int sampnum)
	Try to read sampnum samples and returns actual sample num recorded.
boolean	adin_file_end ()
	End recording.
boolean	adin_stdin_standby (int freq, void *arg)
	Initialization for speech input via stdin.
boolean	adin_stdin_begin (char *pathname)
	Begin reading audio data from stdin.
int	adin_stdin_read (SP16 *buf, int sampnum)
	Try to read sampnum samples and returns actual sample num recorded.
char *	adin_file_get_current_filename ()
	A tiny function to get current input raw speech file name.
char *	adin_stdin_input_name ()
	A tiny function to get current input raw speech file name.
boolean	adin_sndfile_standby (int freq, void *arg)
	Initialization: if listfile is specified, open it here.
boolean	adin_sndfile_begin (char *pathname)
	Begin reading audio data from a file.
int	adin_sndfile_read (SP16 *buf, int sampnum)
	Try to read sampnum samples and returns actual sample num recorded.
boolean	adin_sndfile_end ()
	End recording.
char *	adin_sndfile_get_current_filename ()
	A tiny function to get current input raw speech file name.
boolean	adin_tcpip_standby (int freq, void *arg)
	Initialize as adinnet server: prepare to become server.
boolean	adin_tcpip_begin (char *pathname)
	Wait for connection from adinnet client and begin audio input stream.
boolean	adin_tcpip_end ()
	End recording.
int	adin_tcpip_read (SP16 *buf, int sampnum)
	Try to read sampnum samples and returns actual sample num recorded.
boolean	adin_tcpip_send_pause ()
	Tell the adinnet client to pause transfer.
boolean	adin_tcpip_send_terminate ()
	Tell the adinnet client to terminate transfer.
boolean	adin_tcpip_send_resume ()
	Tell the adinnet client to resume the paused transfer.
char *	adin_tcpip_input_name ()
	Function to return current input source device name.
void	init_count_zc_e (ZEROCROSS *zc, int length)
	Allocate buffers for zerocross counting.
void	reset_count_zc_e (ZEROCROSS *zc, int c_trigger, int c_length, int c_offset)
	Initialize all parameters and buffers for zero-cross counting.
void	free_count_zc_e (ZEROCROSS *zc)
	End procedure: free all buffers.
int	count_zc_e (ZEROCROSS zc, SP16 buf, int step)
	Adding buf[0..step-1] to the cycle buffer and update the count of zero cross.
void	zc_copy_buffer (ZEROCROSS zc, SP16 newbuf, int *len)
	Flush samples in the current cycle buffer.
void	zmean_reset ()
	Reset status.
void	sub_zmean (SP16 *speech, int samplenum)
	Remove DC offset.
DS_BUFFER *	ds48to16_new ()
	Setup for down sampling.
void	ds48to16_free (DS_BUFFER *ds)
	Free the down sampling buffer.
int	ds48to16 (SP16 dst, SP16 src, int srclen, int maxdstlen, DS_BUFFER *ds)
	Perform down sampling of input samples to 1/3.

説明

音声入力および振幅による音区間検出に関する定義

このファイルには, さまざまなソースからの音声入力処理と音声区間の検出に関連するいくつかの定義が含まれています．

参照:: speech.h

作者:: Akinobu LEE

日付:: Thu Feb 10 17:22:36 2005

Revision:: 1.10

adin.h で定義されています。

マクロ定義

#define SUPPORTED_WAVEFILE_FORMAT "RAW(BE),WAV,AU,SND,NIST,ADPCM and more"

String describing the list of supported wave file formats.

It depends on HAVE_LIBSNDFILE.

adin.h の 72 行で定義されています。

参照元 j_output_argument_help().

列挙型

anonymous enum

Speech input source.

列挙型の値:

SP_RAWFILE	Wavefile.
SP_MIC	Live microphone device, or plugin.
SP_ADINNET	Network client (adintool etc.)
SP_MFCFILE	HTK parameter file.
SP_NETAUDIO	Live NetAudio/DatLink input.
SP_STDIN	Standard input.
SP_MFCMODULE	parameter module

adin.h の 44 行で定義されています。

関数

boolean adin_mic_standby	(	int	sfreq,
		void *	dummy
	)

Device initialization: check machine capability.

引数:

sfreq	[in] required sampling frequency.
arg	[in] a dummy data

戻り値:: TRUE on success, FALSE on failure.

Device initialization: check machine capability.

引数:

sfreq	[in] required sampling frequency.
dummy	[in] a dummy data

戻り値:: TRUE on success, FALSE on failure.

Device initialization: check machine capability.

引数:

sfreq	[in] required sampling frequency.
arg	[in] a dummy data

戻り値:: TRUE on success, FALSE on failure.

adin_mic_darwin_coreaudio.c の 288 行で定義されています。

参照元 adin_select().

boolean adin_mic_begin ( char * arg )

Start recording.

引数:

pathname [in] path name to open or NULL for default

戻り値:: TRUE on success, FALSE on failure.

adin_mic_darwin_coreaudio.c の 578 行で定義されています。

参照元 adin_select().

boolean adin_mic_end ( )

Stop recording.

戻り値:: TRUE on success, FALSE on failure.

adin_mic_darwin_coreaudio.c の 579 行で定義されています。

参照元 adin_select().

int adin_mic_read	(	SP16 *	buf,
		int	sampnum
	)

Read samples from device.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block until at least one sample can be obtained.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -2 if error.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block until at least one sample can be obtained.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -2 if an error occured.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block until at least some samples are obtained.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -2 if an error occured.

adin_mic_freebsd.c の 255 行で定義されています。

参照元 adin_select().

char* adin_mic_input_name ( )

Function to return current input source device name.

戻り値:: string of current input device name.

adin_mic_darwin_coreaudio.c の 675 行で定義されています。

参照元 adin_select().

boolean adin_alsa_standby	(	int	sfreq,
		void *	dummy
	)

Device initialization: check machine capability.

引数:

sfreq	[in] required sampling frequency.
dummy	[in] a dummy data

戻り値:: TRUE on success, FALSE on failure.

adin_mic_linux_alsa.c の 164 行で定義されています。

参照元 adin_mic_standby(), と adin_select().

boolean adin_alsa_begin ( char * pathname )

Start recording.

引数:

pathname [in] device name to open or NULL for default

戻り値:: TRUE on success, FALSE on failure.

adin_mic_linux_alsa.c の 430 行で定義されています。

参照元 adin_mic_begin(), と adin_select().

boolean adin_alsa_end ( )

Stop recording.

戻り値:: TRUE on success, FALSE on failure.

adin_mic_linux_alsa.c の 499 行で定義されています。

参照元 adin_mic_end(), と adin_select().

int adin_alsa_read	(	SP16 *	buf,
		int	sampnum
	)

Read samples from device.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block until at least one sample can be obtained.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -2 if an error occured.

adin_mic_linux_alsa.c の 523 行で定義されています。

参照元 adin_mic_read(), と adin_select().

char* adin_alsa_input_name ( )

Function to return current input source device name.

戻り値:: string of current input device name.

adin_mic_linux_alsa.c の 613 行で定義されています。

参照元 adin_mic_input_name(), と adin_select().

boolean adin_oss_standby	(	int	sfreq,
		void *	dummy
	)

Device initialization: check device capability and open for recording.

引数:

sfreq	[in] required sampling frequency.
dummy	[in] a dummy data

戻り値:: TRUE on success, FALSE on failure.

adin_mic_linux_oss.c の 118 行で定義されています。

参照元 adin_mic_standby(), と adin_select().

boolean adin_oss_begin ( char * pathname )

Start recording.

引数:

pathname [in] path name to open or NULL for default

戻り値:: TRUE on success, FALSE on failure.

adin_mic_linux_oss.c の 358 行で定義されています。

参照元 adin_mic_begin(), と adin_select().

boolean adin_oss_end ( )

Stop recording.

戻り値:: TRUE on success, FALSE on failure.

adin_mic_linux_oss.c の 394 行で定義されています。

参照元 adin_mic_end(), と adin_select().

int adin_oss_read	(	SP16 *	buf,
		int	sampnum
	)

Read samples from device.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block at most MAXPOLLINTERVAL msec, until at least one sample can be obtained. If no data has been obtained after waiting for MAXPOLLINTERVAL msec, returns 0.

When stereo input, only left channel will be used.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, 0 of no sample has been captured in MAXPOLLINTERVAL msec, -2 if error.

adin_mic_linux_oss.c の 418 行で定義されています。

参照元 adin_mic_read(), と adin_select().

char* adin_oss_input_name ( )

Function to return current input source device name.

戻り値:: string of current input device name.

adin_mic_linux_oss.c の 485 行で定義されています。

参照元 adin_mic_input_name(), と adin_select().

boolean adin_esd_standby	(	int	sfreq,
		void *	dummy
	)

Connection initialization: check connectivity and open for recording.

引数:

sfreq	[in] required sampling frequency
dummy	[in] a dummy data

戻り値:: TRUE on success, FALSE on failure.

adin_esd.c の 54 行で定義されています。

参照元 adin_mic_standby(), と adin_select().

boolean adin_esd_begin ( char * pathname )

Start recording.

pathname is dummy.

引数:

pathname [in] path name to open or NULL for default

戻り値:: TRUE on success, FALSE on failure.

adin_esd.c の 86 行で定義されています。

参照元 adin_mic_begin(), と adin_select().

boolean adin_esd_end ( )

Stop recording.

戻り値:: TRUE on success, FALSE on failure.

adin_esd.c の 97 行で定義されています。

参照元 adin_mic_end(), と adin_select().

int adin_esd_read	(	SP16 *	buf,
		int	sampnum
	)

Read samples from the daemon.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block until at least one sample can be obtained.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -2 if an error occured.

adin_esd.c の 115 行で定義されています。

参照元 adin_mic_read(), と adin_select().

char* adin_esd_input_name ( )

Function to return current input source device name.

戻り値:: string of current input device name.

adin_esd.c の 146 行で定義されています。

参照元 adin_mic_input_name(), と adin_select().

boolean adin_pulseaudio_standby	(	int	sfreq,
		void *	dummy
	)

Connection initialization: check connectivity and open for recording.

引数:

sfreq	[in] required sampling frequency
dummy	[in] a dummy data

戻り値:: TRUE on success, FALSE on failure.

adin_pulseaudio.c の 54 行で定義されています。

参照元 adin_mic_standby(), と adin_select().

boolean adin_pulseaudio_begin ( char * arg )

Start recording.

pathname is dummy.

引数:

arg	[in] argument

戻り値:: TRUE on success, FALSE on failure.

adin_pulseaudio.c の 74 行で定義されています。

参照元 adin_mic_begin(), と adin_select().

boolean adin_pulseaudio_end ( )

Stop recording.

戻り値:: TRUE on success, FALSE on failure.

adin_pulseaudio.c の 101 行で定義されています。

参照元 adin_mic_end(), と adin_select().

int adin_pulseaudio_read	(	SP16 *	buf,
		int	sampnum
	)

Read samples from device.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block until at least one sample was obtained.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -2 if an error occured.

adin_pulseaudio.c の 128 行で定義されています。

参照元 adin_mic_read(), と adin_select().

char* adin_pulseaudio_input_name ( )

Function to return current input source device name.

戻り値:: string of current input device name.

adin_pulseaudio.c の 160 行で定義されています。

参照元 adin_mic_input_name(), と adin_select().

boolean adin_netaudio_standby	(	int	sfreq,
		void *	arg
	)

Connection initialization: check connectivity and open for recording.

引数:

sfreq	[in] required sampling frequency
arg	[in] server device name string to connect

戻り値:: TRUE on success, FALSE on failure.

adin_netaudio.c の 60 行で定義されています。

参照元 adin_select().

boolean adin_netaudio_begin ( char * pathname )

Start recording.

引数:

pathname [in] path name to open or NULL for default

戻り値:: TRUE on success, FALSE on failure.

adin_netaudio.c の 75 行で定義されています。

参照元 adin_select().

boolean adin_netaudio_end ( )

Stop recording.

戻り値:: TRUE on success, FALSE on failure.

adin_netaudio.c の 87 行で定義されています。

参照元 adin_select().

int adin_netaudio_read	(	SP16 *	buf,
		int	sampnum
	)

Read samples from the daemon.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block until at least one sample can be obtained.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -2 if an error occured.

adin_netaudio.c の 106 行で定義されています。

参照元 adin_select().

char* adin_netaudio_input_name ( )

Function to return current input source device name.

戻り値:: string of current input device name.

adin_netaudio.c の 125 行で定義されています。

参照元 adin_select().

int NA_standby	(	int	sfreq,
		char *	server_devname
	)

Initialize NetAudio device.

引数:

sfreq	[in] sampling frequency
server_devname	[in] server host name

戻り値:: 1 on success, 0 on failure.

adin_na.c の 60 行で定義されています。

参照元 adin_netaudio_standby().

int NA_read	(	SP16 *	buf,
		int	sampnum
	)

Read samples from NetAudio port.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block until at least some samples are obtained.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -1 if an error occured.

adin_na.c の 156 行で定義されています。

参照元 adin_netaudio_read().

boolean adin_file_standby	(	int	freq,
		void *	arg
	)

Initialization: if listfile is specified, open it here.

引数:

freq	[in] required sampling frequency.
arg	[in] file name of listfile, or NULL if not use

戻り値:: TRUE on success, FALSE on failure.

adin_file.c の 326 行で定義されています。

参照元 adin_select().

boolean adin_file_begin ( char * filename )

Begin reading audio data from a file.

If listfile was specified in adin_file_standby(), the next filename will be read from the listfile. Otherwise, the filename will be obtained from stdin. Then the file will be opened here.

引数:

filename [in] file name to open or NULL for prompt

戻り値:: TRUE on success, FALSE on failure.

adin_file.c の 358 行で定義されています。

参照元 adin_select().

int adin_file_read	(	SP16 *	buf,
		int	sampnum
	)

Try to read sampnum samples and returns actual sample num recorded.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -1 if EOF, -2 if error.

adin_file.c の 410 行で定義されています。

参照元 adin_select().

boolean adin_file_end ( )

End recording.

戻り値:: TRUE on success, FALSE on failure.

adin_file.c の 473 行で定義されています。

参照元 adin_select().

boolean adin_stdin_standby	(	int	freq,
		void *	arg
	)

Initialization for speech input via stdin.

引数:

freq	[in] required sampling frequency.
arg	dummy, ignored

戻り値:: TRUE on success, FALSE on failure.

adin_file.c の 489 行で定義されています。

参照元 adin_select().

boolean adin_stdin_begin ( char * pathname )

Begin reading audio data from stdin.

引数:

pathname [in] dummy

戻り値:: TRUE on success, FALSE on failure.

adin_file.c の 504 行で定義されています。

参照元 adin_select().

int adin_stdin_read	(	SP16 *	buf,
		int	sampnum
	)

Try to read sampnum samples and returns actual sample num recorded.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -1 if EOF, -2 if error.

adin_file.c の 529 行で定義されています。

参照元 adin_select().

char* adin_file_get_current_filename ( )

A tiny function to get current input raw speech file name.

戻り値:: string of current input speech file.

adin_file.c の 585 行で定義されています。

参照元 adin_select().

char* adin_stdin_input_name ( )

A tiny function to get current input raw speech file name.

戻り値:: string of current input speech file.

adin_file.c の 597 行で定義されています。

参照元 adin_select().

boolean adin_sndfile_standby	(	int	freq,
		void *	arg
	)

Initialization: if listfile is specified, open it here.

Else, just store the required frequency.

引数:

freq	[in] required sampling frequency
arg	[in] file name of listfile, or NULL if not use

戻り値:: TRUE on success, FALSE on failure.

adin_sndfile.c の 202 行で定義されています。

参照元 adin_select().

boolean adin_sndfile_begin ( char * filename )

Begin reading audio data from a file.

If listfile was specified in adin_sndfile_standby(), the next filename will be read from the listfile. Otherwise, the filename will be obtained from stdin. Then the file will be opened here.

引数:

filename [in] file name to open or NULL for prompt

戻り値:: TRUE on success, FALSE on failure.

adin_sndfile.c の 287 行で定義されています。

参照元 adin_select().

int adin_sndfile_read	(	SP16 *	buf,
		int	sampnum
	)

Try to read sampnum samples and returns actual sample num recorded.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -1 if EOF, -2 if error.

adin_sndfile.c の 341 行で定義されています。

参照元 adin_select().

boolean adin_sndfile_end ( )

End recording.

戻り値:: TRUE on success, FALSE on failure.

adin_sndfile.c の 362 行で定義されています。

参照元 adin_select().

char* adin_sndfile_get_current_filename ( )

A tiny function to get current input raw speech file name.

戻り値:: string of current input speech file.

adin_sndfile.c の 381 行で定義されています。

参照元 adin_select().

boolean adin_tcpip_standby	(	int	freq,
		void *	port_str
	)

Initialize as adinnet server: prepare to become server.

引数:

freq	[in] required sampling frequency
port_str	[in] port number in string

戻り値:: TRUE on success, FALSE on failure.

adin_tcpip.c の 78 行で定義されています。

参照元 adin_select().

boolean adin_tcpip_begin ( char * pathname )

Wait for connection from adinnet client and begin audio input stream.

引数:

pathname [in] path name to open or NULL for default

戻り値:: TRUE on success, FALSE on failure.

adin_tcpip.c の 102 行で定義されています。

参照元 adin_select().

boolean adin_tcpip_end ( )

End recording.

If last input segment was segmented by end of connection, close socket and wait for next connection. Otherwise, it means that the last input segment was segmented by either end-of-segment signal from client side or speech detection function in server side, so just wait for a next input in the current socket.

戻り値:: TRUE on success, FALSE on failure.

adin_tcpip.c の 151 行で定義されています。

参照元 adin_select().

int adin_tcpip_read	(	SP16 *	buf,
		int	sampnum
	)

Try to read sampnum samples and returns actual sample num recorded.

This function will not block.

If data of zero length has been received, it is treated as a end-of-segment marker from the client. If data below zero length has been received, it means the client has finished the overall input stream transmission and want to disconnect.

引数:

buf	[out] samples obtained in this function
sampnum	[in] wanted number of samples to be read

戻り値:: actural number of read samples, -1 if EOF, -2 if error.

adin_tcpip.c の 182 行で定義されています。

参照元 adin_select().

boolean adin_tcpip_send_pause ( )

Tell the adinnet client to pause transfer.

戻り値:: TRUE on success, FALSE on failure.

adin_tcpip.c の 226 行で定義されています。

参照元 adin_select().

boolean adin_tcpip_send_terminate ( )

Tell the adinnet client to terminate transfer.

戻り値:: TRUE on success, FALSE on failure.

adin_tcpip.c の 292 行で定義されています。

参照元 adin_select().

boolean adin_tcpip_send_resume ( )

Tell the adinnet client to resume the paused transfer.

戻り値:: TRUE on success, FALSE on failure.

adin_tcpip.c の 244 行で定義されています。

参照元 adin_select().

char* adin_tcpip_input_name ( )

Function to return current input source device name.

戻り値:: string of current input device name.

adin_tcpip.c の 312 行で定義されています。

参照元 adin_select().

void init_count_zc_e	(	ZEROCROSS *	zc,
		int	length
	)

Allocate buffers for zerocross counting.

引数:

zc	[i/o] zerocross work area
length	[in] Cycle buffer size = Number of samples to hold

zc-e.c の 49 行で定義されています。

参照元 adin_setup_param(), と reset_count_zc_e().

void reset_count_zc_e	(	ZEROCROSS *	zc,
		int	c_trigger,
		int	c_length,
		int	c_offset
	)

Initialize all parameters and buffers for zero-cross counting.

引数:

zc	[i/o] zerocross work area
c_trigger	[in] Tgigger level threshold
c_length	[in] Cycle buffer size = Number of samples to hold
c_offset	[in] Static DC offset of input data

zc-e.c の 68 行で定義されています。

参照元 adin_cut().

void free_count_zc_e ( ZEROCROSS * zc )

End procedure: free all buffers.

引数:

zc	[i/o] zerocross work area

zc-e.c の 98 行で定義されています。

参照元 adin_free_param(), と reset_count_zc_e().

int count_zc_e	(	ZEROCROSS *	zc,
		SP16 *	buf,
		int	step
	)

Adding buf[0..step-1] to the cycle buffer and update the count of zero cross.

Also swap them with the oldest ones in the cycle buffer. Also get the maximum level in the cycle buffer.

引数:

zc	[i/o] zerocross work area
buf	[I/O] new samples, will be swapped by old samples when returned.
step	[in] length of above.

戻り値:: zero-cross count of the samples in the cycle buffer.

zc-e.c の 116 行で定義されています。

参照元 adin_cut().

void zc_copy_buffer	(	ZEROCROSS *	zc,
		SP16 *	newbuf,
		int *	len
	)

Flush samples in the current cycle buffer.

引数:

zc	[i/o] zerocross work area
newbuf	[out] the samples in teh cycle buffer will be written here.
len	[out] length of above.

zc-e.c の 165 行で定義されています。

参照元 adin_cut().

void sub_zmean	(	SP16 *	speech,
		int	samplenum
	)

Remove DC offset.

The DC offset is estimated by the first samples after zmean_reset() was called. If the first input segment is longer than ZMEANSAMPLES, the whole input is used to estimate the zero mean. Otherwise, the zero mean will continue to be updated until the read length exceed ZMEANSAMPLES.

引数:

speech	[I/O] input speech data, will be subtracted by DC offset.
samplenum	[in] length of above.

zmean.c の 70 行で定義されています。

参照元 adin_cut().

DS_BUFFER* ds48to16_new ( )

Setup for down sampling.

戻り値:: newly allocated buffer for down sampling

ds48to16.c の 269 行で定義されています。

参照元 adin_setup_all().

void ds48to16_free ( DS_BUFFER * ds )

Free the down sampling buffer.

引数:

ds	[i/o] down sampling buffer to free

ds48to16.c の 307 行で定義されています。

参照元 adin_free_param().

int ds48to16	(	SP16 *	dst,
		SP16 *	src,
		int	srclen,
		int	maxdstlen,
		DS_BUFFER *	ds
	)

Perform down sampling of input samples to 1/3.

引数:

dst	[out] store the resulting samples
src	[in] input samples
srclen	[in] number of input samples
maxdstlen	[in] maximum length of dst
ds	[i/o] down sampling buffer

戻り値:: the number of samples written to dst, or -1 on errror.

ds48to16.c の 332 行で定義されています。

参照元 adin_cut().

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