libsent/include/sent/adin.h

音声入力および音声区間検出に関する定義 [詳細]

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

adin.hのインクルード依存関係図

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ソースコードを見る。

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"
#define	ZMEANSAMPLES   48000
列挙型
enum	{   SP_RAWFILE, SP_MIC, SP_ADINNET, SP_MFCFILE,   SP_NETAUDIO, SP_STDIN }
	To select speech input source [詳細]
関数
boolean	adin_select (int source)
boolean	adin_standby (int freq, void *arg)
boolean	adin_begin ()
boolean	adin_end ()
void	adin_setup_func (int(*cad_read)(SP16 *, int), boolean(*cad_pause)(), boolean(*cad_resume)(), boolean use_cut_def, boolean need_thread)
void	adin_setup_param (int silence_cut, boolean strip_zero, int cthres, int czc, int margin, int tail_margin, int sample_freq, boolean ignore_speech, boolean need_zeromean)
boolean	query_segment_on ()
boolean	query_thread_on ()
void	adin_reset_zmean ()
int	adin_go (int(*ad_process)(SP16 *, int), int(*ad_check)())
	Top function to start input processing
boolean	adin_mic_standby (int freq, void *arg)
boolean	adin_mic_start ()
boolean	adin_mic_stop ()
int	adin_mic_read (SP16 *buf, int sampnum)
	Read samples from the daemon.
boolean	adin_netaudio_standby (int freq, void *arg)
boolean	adin_netaudio_start ()
boolean	adin_netaudio_stop ()
int	adin_netaudio_read (SP16 *buf, int sampnum)
	Read samples from the daemon.
int	NA_standby (int, char *)
void	NA_start ()
void	NA_stop ()
int	NA_read (SP16 *buf, int sampnum)
	Read samples from NetAudio port.
char *	get_line (char *prompt)
boolean	adin_file_standby (int freq, void *arg)
boolean	adin_file_begin ()
	Begin reading audio data from a file.
int	adin_file_read (SP16 *buf, int sampnum)
boolean	adin_file_end ()
boolean	adin_stdin_standby (int freq, void *arg)
boolean	adin_stdin_begin ()
	Begin reading audio data from stdin
int	adin_stdin_read (SP16 *buf, int sampnum)
boolean	adin_sndfile_standby (int freq, void *arg)
boolean	adin_sndfile_begin ()
	Begin reading audio data from a file.
int	adin_sndfile_read (SP16 *buf, int sampnum)
boolean	adin_sndfile_end ()
boolean	adin_tcpip_standby (int freq, void *arg)
boolean	adin_tcpip_begin ()
boolean	adin_tcpip_end ()
	End recording.
int	adin_tcpip_read (SP16 *buf, int sampnum)
boolean	adin_tcpip_send_pause ()
boolean	adin_tcpip_send_terminate ()
boolean	adin_tcpip_send_resume ()
void	init_count_zc_e (int c_trigger, int c_length, int c_offset)
void	end_count_zc_e ()
int	count_zc_e (SP16 *buf, int step)
int	count_zc_e_level (SP16 *buf, int step, int *levelp)
void	zc_copy_buffer (SP16 *newbuf, int *len)
void	zmean_reset ()
void	sub_zmean (SP16 *speech, int samplenum)
	Remove DC offset.

---

説明

音声入力および音声区間検出に関する定義

作者:

Akinobu LEE

日付:

Thu Feb 10 17:22:36 2005

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

Revision

1.4

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 55 行で定義されています。

参照元 detailed_help().

#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).

adin.h の 65 行で定義されています。

参照元 sub_zmean().

---

列挙型

anonymous enum

To select speech input source

列挙型の値:

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

adin.h の 37 行で定義されています。

---

関数

boolean adin_select

(

int

source

)

Select input source and setup device-specific functions.

引数:

source

[In] selection ID of input source

参照:

adin.h

戻り値:

TRUE on success, FALSE if source is not available.

adin.c の 134 行で定義されています。

参照元 adin_initialize().

boolean adin_standby	(	int	freq,
		void *	arg
	)

Call device-specific initialization.

引数:

	freq	[in] sampling frequency
	arg	[in] device-dependent extra argument

戻り値:

TRUE on success, FALSE on failure.

adin.c の 227 行で定義されています。

参照元 adin_initialize().

boolean adin_begin

(

)

Call device-specific function to begin capturing of the audio stream.

戻り値:

TRUE on success, FALSE on failure.

adin.c の 239 行で定義されています。

参照元 main_recognition_loop().

boolean adin_end

(

)

Call device-specific function to end capturing of the audio stream.

戻り値:

TRUE on success, FALSE on failure.

adin.c の 251 行で定義されています。

参照元 main_recognition_loop().

void adin_setup_func	(	int(*)(SP16 *, int)	cad_read,
		boolean(*)()	cad_pause,
		boolean(*)()	cad_resume,
		boolean	use_cut_def,
		boolean	need_thread
	)

Store the given device-dependent functions and configuration values to local work area. This function will be called from adin_select() via adin_register_func().

引数:

cad_read	[in] function to read input samples
cad_pause	[in] function to stop input
cad_resume	[in] function to (re-)start input
use_cut_def	[in] TRUE if the device needs speech segment detection by default
need_thread	[in] TRUE if the device is live input and needs threading

adin-cut.c の 179 行で定義されています。

参照元 adin_register_func().

void adin_setup_param	(	int	silence_cut,
		boolean	strip_zero,
		int	cthres,
		int	czc,
		int	head_margin,
		int	tail_margin,
		int	sample_freq,
		boolean	ignore_speech,
		boolean	need_zeromean
	)

Setup silence detection parameters (should be called after adin_select()). If using pthread, the A/D-in and detection thread will be started at the end of this function.

引数:

	silence_cut	[in] whether to perform silence cutting. 0=force off, 1=force on, 2=keep device-specific default
	strip_zero	[in] TRUE if enables stripping of zero samples
	cthres	[in] input level threshold (0-32767)
	czc	[in] zero-cross count threshold in a second
	head_margin	[in] header margin length in msec
	tail_margin	[in] tail margin length in msec
	sample_freq	[in] sampling frequency: just providing value for computing other variables
	ignore_speech	[in] TRUE if ignore speech input between call, while waiting recognition process
	need_zeromean	[in] TRUE if perform zero-mean subtraction

adin-cut.c の 216 行で定義されています。

参照元 adin_initialize().

boolean query_segment_on

(

)

Query function to check whether the input speech detection is on or off.

戻り値:

TRUE if on, FALSE if off.

adin-cut.c の 254 行で定義されています。

boolean query_thread_on

(

)

Query function to check whether the input threading is on or off.

戻り値:

TRUE if on, FALSE if off.

adin-cut.c の 265 行で定義されています。

void adin_reset_zmean

(

)

Reset zero mean data to re-estimate zero mean at the next input.

adin-cut.c の 275 行で定義されています。

参照元 adin_begin()・adin_standby().

int adin_go	(	int(*)(SP16 *, int)	ad_process,
		int(*)()	ad_check
	)

Top function to start input processing

If threading mode is enabled, this function simply enters to adin_thread_process() to process triggered samples detected by another running A/D-in thread.

If threading mode is not available or disabled by either device requirement or OS capability, this function simply calls adin_cut() to detect speech segment from input device and process them concurrently by one process.

引数:

	ad_process	[in] function to process the recorded fragments
	ad_check	[in] function to be called periodically for checking incoming user command in module mode.

戻り値:

the same as adin_thread_process() in threading mode, or same as adin_cut() when non-threaded mode.

adin-cut.c の 1126 行で定義されています。

参照元 main_recognition_loop().

boolean adin_mic_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_esd.c の 51 行で定義されています。

参照元 adin_select().

boolean adin_mic_start

(

)

Start recording.

戻り値:

TRUE on success, FALSE on failure.

adin_esd.c の 75 行で定義されています。

参照元 adin_mic_standby()・adin_select().

boolean adin_mic_stop

(

)

Stop recording.

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_standby()・adin_select().

int adin_mic_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 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_esd.c の 104 行で定義されています。

参照元 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 57 行で定義されています。

参照元 adin_select().

boolean adin_netaudio_start

(

)

Start recording.

戻り値:

TRUE on success, FALSE on failure.

adin_netaudio.c の 71 行で定義されています。

参照元 adin_select().

boolean adin_netaudio_stop

(

)

Stop recording.

戻り値:

TRUE on success, FALSE on failure.

adin_netaudio.c の 84 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 103 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 59 行で定義されています。

参照元 adin_netaudio_standby().

void NA_start

(

)

Begin recording.

adin_na.c の 128 行で定義されています。

参照元 adin_netaudio_start().

void NA_stop

(

)

Pause the recording.

adin_na.c の 138 行で定義されています。

参照元 adin_netaudio_stop().

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().

char* get_line

(

char *

prompt

)

Get one file name from stdin with a prompt . Blank line is omitted.

引数:

prompt

[in] prompt string

戻り値:

newly allocated buffer filled with the input.

adin_file.c の 314 行で定義されています。

参照元 adin_file_begin()・adin_sndfile_begin()・main_recognition_loop().

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 355 行で定義されています。

参照元 adin_select().

boolean adin_file_begin

(

)

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.

戻り値:

TRUE on success, FALSE on failure.

adin_file.c の 385 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 429 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 476 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 492 行で定義されています。

参照元 adin_select().

boolean adin_stdin_begin

(

)

Begin reading audio data from stdin

戻り値:

TRUE on success, FALSE on failure.

adin_file.c の 505 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 528 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

(

)

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.

戻り値:

TRUE on success, FALSE on failure.

adin_sndfile.c の 232 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 313 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 334 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

(

)

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

戻り値:

TRUE on success, FALSE on failure.

adin_tcpip.c の 100 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 146 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 177 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 223 行で定義されています。

参照元 msock_exec_command().

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 257 行で定義されています。

参照元 msock_exec_command().

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 240 行で定義されています。

参照元 msock_exec_command().

void init_count_zc_e	(	int	c_trigger,
		int	c_length,
		int	c_offset
	)

Initialize all parameters and buffers for zero-cross counting.

引数:

	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 63 行で定義されています。

参照元 adin_cut().

void end_count_zc_e

(

)

End procedure: free all buffers.

zc-e.c の 91 行で定義されています。

参照元 adin_cut().

int count_zc_e	(	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.

引数:

	buf	[I/O] new samples given, and swapped samples will be returned.
	step	[in] length of above.

戻り値:

zero-cross count of the samples in the cycle buffer.

zc-e.c の 107 行で定義されています。

参照元 adin_cut().

int count_zc_e_level	(	SP16 *	buf,
		int	step,
		int *	levelp
	)

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:

	buf	[I/O] new samples, will be swapped by old samples when returned.
	step	[in] length of above.
	levelp	[out] maximum level in the cycle buffer.

戻り値:

zero-cross count of the samples in the cycle buffer.

zc-e.c の 157 行で定義されています。

void zc_copy_buffer	(	SP16 *	newbuf,
		int *	len
	)

Flush samples in the current cycle buffer.

引数:

	newbuf	[out] the samples in teh cycle buffer will be written here.
	len	[out] length of above.

zc-e.c の 205 行で定義されています。

参照元 adin_cut().

void zmean_reset

(

)

Reset status.

zmean.c の 50 行で定義されています。

参照元 adin_reset_zmean().

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 69 行で定義されています。

参照元 adin_cut().

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