| Message ID | 1454480433-20169-1-git-send-email-han.lu@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, 03 Feb 2016 07:20:33 +0100, han.lu@intel.com wrote: > > From: "Lu, Han" <han.lu@intel.com> > > alsa-utils as well as bareos-bat (as well a some Bacula packages) > all contain a program called /usr/bin/bat, which causes conflicts on > various distributions ("basic audio tester" vs "bareos administration > tool"("bacula administration tool")). > Rename to avoid conflict. > > Signed-off-by: Lu, Han <han.lu@intel.com> Applied, thanks. Takashi > > diff --git a/bat/Makefile.am b/bat/Makefile.am > index f0dc5ab..8dfafa9 100644 > --- a/bat/Makefile.am > +++ b/bat/Makefile.am > @@ -1,9 +1,9 @@ > -bin_PROGRAMS = bat > -man_MANS = bat.1 > +bin_PROGRAMS = alsabat > +man_MANS = alsabat.1 > > -EXTRA_DIST = bat.1 > +EXTRA_DIST = alsabat.1 > > -bat_SOURCES = \ > +alsabat_SOURCES = \ > bat.c \ > common.c \ > analyze.c \ > @@ -21,4 +21,4 @@ noinst_HEADERS = \ > AM_CPPFLAGS = \ > -Wall -I$(top_srcdir)/include > > -bat_LDADD = @FFTW_LIB@ > +alsabat_LDADD = @FFTW_LIB@ > diff --git a/bat/alsabat.1 b/bat/alsabat.1 > new file mode 100644 > index 0000000..8d0b9c0 > --- /dev/null > +++ b/bat/alsabat.1 > @@ -0,0 +1,159 @@ > +.TH ALSABAT 1 "20th October 2015" > +.SH NAME > +alsabat \- command\-line sound tester for ALSA sound card driver > + > +.SH SYNOPSIS > +\fBalsabat\fP [\fIflags\fP] > + > +.SH DESCRIPTION > +\fBALSABAT(ALSA Basic Audio Tester)\fP is a simple command\-line utility > +intended to help automate audio driver and sound server testing with little > +human interaction. ALSABAT can be used to test audio quality, stress test > +features and test audio before and after PM state changes. > + > +ALSABAT's design is relatively simple. ALSABAT plays an audio stream and > +captures the same stream in either a digital or analog loop back. It then > +compares the captured stream using a FFT to the original to determine if > +the test case passes or fails. > + > +ALSABAT can either run wholly on the target machine being tested (standalone > +mode) or can run as a client/server mode where by alsabat client runs on the > +target and runs as a server on a separate tester machine. The client/server > +mode still requires some manual interaction for synchronization, but this > +is actively being developed for future releases. > + > +The hardware testing configuration may require the use of an analog cable > +connecting target to tester machines or a cable to create an analog > +loopback if no loopback mode is not available on the sound hardware that > +is being tested. > +An analog loopback cable can be used to connect the "line in" to "line out" > +jacks to create a loopback. If only headphone and mic jacks (or combo jack) > +are available then the following simple circuit can be used to create an > +analog loopback :- > + > +https://source.android.com/devices/audio/loopback.html > + > +.SH OPTIONS > +.TP > +\fI\-h, \-\-help\fP > +Help: show syntax. > +.TP > +\fI\-D\fP > +Select sound card to be tested by name. > +.TP > +\fI\-P\fP > +Select the playback PCM device. > +.TP > +\fI\-C\fP > +Select the capture PCM device. > +.TP > +\fI\-f\fP > +Sample format > +.br > +Recognized sample formats are: U8 S16_LE S24_3LE S32_LE > +.br > +Some of these may not be available on selected hardware > +.br > +The available format shortcuts are: > +.nf > +\-f cd (16 bit little endian, 44100, stereo) [\-f S16_LE \-c2 \-r44100] > +\-f dat (16 bit little endian, 48000, stereo) [\-f S16_LE \-c2 \-r48000] > +.fi > +If no format is given S16_LE is used. > +.TP > +\fI\-c\fP > +The number of channels. The default is one channel. > +Valid values at the moment are 1 or 2. > +.TP > +\fI\-r\fP > +Sampling rate in Hertz. The default rate is 44100 Hertz. > +Valid values depends on hardware support. > +.TP > +\fI\-n\fP > +Duration of generated signal. > +The value could be either of the two forms: > +.br > +1. Decimal integer, means number of frames; > +.br > +2. Floating point with suffix 's', means number of seconds. > +.br > +The default is 2 seconds. > +.TP > +\fI\-k\fP > +Sigma k value for analysis. > +.br > +The analysis function reads data from WAV file, run FFT against the data > +to get magnitude of frequency vectors, and then calculates the average > +value and standard deviation of frequency vectors. After that, we define > +a threshold: > +.br > +threshold = k * standard_deviation + mean_value > +.br > +Frequencies with amplitude larger than threshold will be recognized as a > +peak, and the frequency with largest peak value will be recognized as a > +detected frequency. > +.br > +ALSABAT then compares the detected frequency to target frequency, to > +decide if the detecting passes or fails. > +.br > +The default value is 3.0. > +.TP > +\fI\-F\fP > +Target frequency for signal generation and analysis, in Hertz. > +The default is 997.0 Hertz. > +Valid range is (DC_THRESHOLD, 40% * Sampling rate). > +.TP > +\fI\-p\fP > +Total number of periods to play or capture. > +.TP > +\fI\-\-log=#\fP > +Write stderr and stdout output to this log file. > +.TP > +\fI\-\-file=#\fP > +Input WAV file for playback. > +.TP > +\fI\-\-saveplay=#\fP > +Target WAV file to save capture test content. > +.TP > +\fI\-\-local\fP > +Internal loopback mode. > +Playback, capture and analysis internal to ALSABAT only. This is intended > +for developers to test new ALSABAT features as no audio is routed outside > +of ALSABAT. > + > +.SH EXAMPLES > + > +.TP > +\fBalsabat \-P plughw:0,0 \-C plughw:0,0 \-c 2 \-f S32_LE \-F 250\fR > +Generate and play a sine wave of 250 Hertz with 2 channel and S32_LE format, > +and then capture and analyze. > + > +.TP > +\fBalsabat \-P plughw:0,0 \-C plughw:0,0 \-\-file 500Hz.wav\fR > +Play the RIFF WAV file "500Hz.wav" which contains 500 Hertz waveform LPCM > +data, and then capture and analyze. > + > +.SH RETURN VALUE > +.br > +On success, returns 0. > +.br > +If no peak be detected, returns -1001; > +.br > +If only DC be detected, returns -1002; > +.br > +If peak frequency does not match with the target frequency, returns -1003. > + > +.SH SEE ALSO > +\fB > +aplay(1) > +\fP > + > +.SH BUGS > +Currently only support RIFF WAV format with PCM data. Please report any bugs to > +the alsa-devel mailing list. > + > +.SH AUTHOR > +\fBalsabat\fP is by Liam Girdwood <liam.r.girdwood@linux.intel.com>, Bernard > +Gautier <bernard.gautier@intel.com> and Han Lu <han.lu@intel.com>. > +This document is by Liam Girdwood <liam.r.girdwood@linux.intel.com> and Han Lu > +<han.lu@intel.com>. > diff --git a/bat/bat.1 b/bat/bat.1 > deleted file mode 100644 > index e00fc27..0000000 > --- a/bat/bat.1 > +++ /dev/null > @@ -1,158 +0,0 @@ > -.TH BAT 1 "20th October 2015" > -.SH NAME > -bat \- command\-line sound tester for ALSA sound card driver > - > -.SH SYNOPSIS > -\fBbat\fP [\fIflags\fP] > - > -.SH DESCRIPTION > -\fBBAT(Basic Audio Tester)\fP is a simple command\-line utility intended > -to help automate audio driver and sound server testing with little human > -interaction. BAT can be used to test audio quality, stress test features > -and test audio before and after PM state changes. > - > -BAT's design is relatively simple. BAT plays an audio stream and captures > -the same stream in either a digital or analog loop back. It then compares > -the captured stream using a FFT to the original to determine if the test > -case passes or fails. > - > -BAT can either run wholly on the target machine being tested (standalone > -mode) or can run as a client/server mode where by bat client runs on the > -target and runs as a server on a separate tester machine. The client/server > -mode still requires some manual interaction for synchronization, but this > -is actively being developed for future releases. > - > -The hardware testing configuration may require the use of an analog cable > -connecting target to tester machines or a cable to create an analog > -loopback if no loopback mode is not available on the sound hardware that > -is being tested. > -An analog loopback cable can be used to connect the "line in" to "line out" > -jacks to create a loopback. If only headphone and mic jacks (or combo jack) > -are available then the following simple circuit can be used to create an > -analog loopback :- > - > -https://source.android.com/devices/audio/loopback.html > - > -.SH OPTIONS > -.TP > -\fI\-h, \-\-help\fP > -Help: show syntax. > -.TP > -\fI\-D\fP > -Select sound card to be tested by name. > -.TP > -\fI\-P\fP > -Select the playback PCM device. > -.TP > -\fI\-C\fP > -Select the capture PCM device. > -.TP > -\fI\-f\fP > -Sample format > -.br > -Recognized sample formats are: U8 S16_LE S24_3LE S32_LE > -.br > -Some of these may not be available on selected hardware > -.br > -The available format shortcuts are: > -.nf > -\-f cd (16 bit little endian, 44100, stereo) [\-f S16_LE \-c2 \-r44100] > -\-f dat (16 bit little endian, 48000, stereo) [\-f S16_LE \-c2 \-r48000] > -.fi > -If no format is given S16_LE is used. > -.TP > -\fI\-c\fP > -The number of channels. The default is one channel. > -Valid values at the moment are 1 or 2. > -.TP > -\fI\-r\fP > -Sampling rate in Hertz. The default rate is 44100 Hertz. > -Valid values depends on hardware support. > -.TP > -\fI\-n\fP > -Duration of generated signal. > -The value could be either of the two forms: > -.br > -1. Decimal integer, means number of frames; > -.br > -2. Floating point with suffix 's', means number of seconds. > -.br > -The default is 2 seconds. > -.TP > -\fI\-k\fP > -Sigma k value for analysis. > -.br > -The analysis function reads data from WAV file, run FFT against the data > -to get magnitude of frequency vectors, and then calculates the average > -value and standard deviation of frequency vectors. After that, we define > -a threshold: > -.br > -threshold = k * standard_deviation + mean_value > -.br > -Frequencies with amplitude larger than threshold will be recognized as a > -peak, and the frequency with largest peak value will be recognized as a > -detected frequency. > -.br > -BAT then compares the detected frequency to target frequency, to decide > -if the detecting passes or fails. > -.br > -The default value is 3.0. > -.TP > -\fI\-F\fP > -Target frequency for signal generation and analysis, in Hertz. > -The default is 997.0 Hertz. > -Valid range is (DC_THRESHOLD, 40% * Sampling rate). > -.TP > -\fI\-p\fP > -Total number of periods to play or capture. > -.TP > -\fI\-\-log=#\fP > -Write stderr and stdout output to this log file. > -.TP > -\fI\-\-file=#\fP > -Input WAV file for playback. > -.TP > -\fI\-\-saveplay=#\fP > -Target WAV file to save capture test content. > -.TP > -\fI\-\-local\fP > -Internal loopback mode. > -Playback, capture and analysis internal to BAT only. This is intended for > -developers to test new BAT features as no audio is routed outside of BAT. > - > -.SH EXAMPLES > - > -.TP > -\fBbat \-P plughw:0,0 \-C plughw:0,0 \-c 2 \-f S32_LE \-F 250\fR > -Generate and play a sine wave of 250 Hertz with 2 channel and S32_LE format, > -and then capture and analyze. > - > -.TP > -\fBbat \-P plughw:0,0 \-C plughw:0,0 \-\-file 500Hz.wav\fR > -Play the RIFF WAV file "500Hz.wav" which contains 500 Hertz waveform LPCM > -data, and then capture and analyze. > - > -.SH RETURN VALUE > -.br > -On success, returns 0. > -.br > -If no peak be detected, returns -1001; > -.br > -If only DC be detected, returns -1002; > -.br > -If peak frequency does not match with the target frequency, returns -1003. > - > -.SH SEE ALSO > -\fB > -aplay(1) > -\fP > - > -.SH BUGS > -Currently only support RIFF WAV format with PCM data. Please report any bugs to > -the alsa-devel mailing list. > - > -.SH AUTHOR > -\fBbat\fP is by Liam Girdwood <liam.r.girdwood@linux.intel.com>, Bernard Gautier > -<bernard.gautier@intel.com> and Han Lu <han.lu@intel.com>. > -This document is by Liam Girdwood <liam.r.girdwood@linux.intel.com> and Han Lu > -<han.lu@intel.com>. > diff --git a/bat/bat.c b/bat/bat.c > index 086b9fa..ddb60b7 100644 > --- a/bat/bat.c > +++ b/bat/bat.c > @@ -272,7 +272,7 @@ static void test_capture(struct bat *bat) > static void usage(struct bat *bat) > { > fprintf(bat->log, > -_("Usage: bat [-options]...\n" > +_("Usage: alsabat [-options]...\n" > "\n" > " -h, --help this help\n" > " -D pcm device for both playback and capture\n" > -- > 2.5.0 >
diff --git a/bat/Makefile.am b/bat/Makefile.am index f0dc5ab..8dfafa9 100644 --- a/bat/Makefile.am +++ b/bat/Makefile.am @@ -1,9 +1,9 @@ -bin_PROGRAMS = bat -man_MANS = bat.1 +bin_PROGRAMS = alsabat +man_MANS = alsabat.1 -EXTRA_DIST = bat.1 +EXTRA_DIST = alsabat.1 -bat_SOURCES = \ +alsabat_SOURCES = \ bat.c \ common.c \ analyze.c \ @@ -21,4 +21,4 @@ noinst_HEADERS = \ AM_CPPFLAGS = \ -Wall -I$(top_srcdir)/include -bat_LDADD = @FFTW_LIB@ +alsabat_LDADD = @FFTW_LIB@ diff --git a/bat/alsabat.1 b/bat/alsabat.1 new file mode 100644 index 0000000..8d0b9c0 --- /dev/null +++ b/bat/alsabat.1 @@ -0,0 +1,159 @@ +.TH ALSABAT 1 "20th October 2015" +.SH NAME +alsabat \- command\-line sound tester for ALSA sound card driver + +.SH SYNOPSIS +\fBalsabat\fP [\fIflags\fP] + +.SH DESCRIPTION +\fBALSABAT(ALSA Basic Audio Tester)\fP is a simple command\-line utility +intended to help automate audio driver and sound server testing with little +human interaction. ALSABAT can be used to test audio quality, stress test +features and test audio before and after PM state changes. + +ALSABAT's design is relatively simple. ALSABAT plays an audio stream and +captures the same stream in either a digital or analog loop back. It then +compares the captured stream using a FFT to the original to determine if +the test case passes or fails. + +ALSABAT can either run wholly on the target machine being tested (standalone +mode) or can run as a client/server mode where by alsabat client runs on the +target and runs as a server on a separate tester machine. The client/server +mode still requires some manual interaction for synchronization, but this +is actively being developed for future releases. + +The hardware testing configuration may require the use of an analog cable +connecting target to tester machines or a cable to create an analog +loopback if no loopback mode is not available on the sound hardware that +is being tested. +An analog loopback cable can be used to connect the "line in" to "line out" +jacks to create a loopback. If only headphone and mic jacks (or combo jack) +are available then the following simple circuit can be used to create an +analog loopback :- + +https://source.android.com/devices/audio/loopback.html + +.SH OPTIONS +.TP +\fI\-h, \-\-help\fP +Help: show syntax. +.TP +\fI\-D\fP +Select sound card to be tested by name. +.TP +\fI\-P\fP +Select the playback PCM device. +.TP +\fI\-C\fP +Select the capture PCM device. +.TP +\fI\-f\fP +Sample format +.br +Recognized sample formats are: U8 S16_LE S24_3LE S32_LE +.br +Some of these may not be available on selected hardware +.br +The available format shortcuts are: +.nf +\-f cd (16 bit little endian, 44100, stereo) [\-f S16_LE \-c2 \-r44100] +\-f dat (16 bit little endian, 48000, stereo) [\-f S16_LE \-c2 \-r48000] +.fi +If no format is given S16_LE is used. +.TP +\fI\-c\fP +The number of channels. The default is one channel. +Valid values at the moment are 1 or 2. +.TP +\fI\-r\fP +Sampling rate in Hertz. The default rate is 44100 Hertz. +Valid values depends on hardware support. +.TP +\fI\-n\fP +Duration of generated signal. +The value could be either of the two forms: +.br +1. Decimal integer, means number of frames; +.br +2. Floating point with suffix 's', means number of seconds. +.br +The default is 2 seconds. +.TP +\fI\-k\fP +Sigma k value for analysis. +.br +The analysis function reads data from WAV file, run FFT against the data +to get magnitude of frequency vectors, and then calculates the average +value and standard deviation of frequency vectors. After that, we define +a threshold: +.br +threshold = k * standard_deviation + mean_value +.br +Frequencies with amplitude larger than threshold will be recognized as a +peak, and the frequency with largest peak value will be recognized as a +detected frequency. +.br +ALSABAT then compares the detected frequency to target frequency, to +decide if the detecting passes or fails. +.br +The default value is 3.0. +.TP +\fI\-F\fP +Target frequency for signal generation and analysis, in Hertz. +The default is 997.0 Hertz. +Valid range is (DC_THRESHOLD, 40% * Sampling rate). +.TP +\fI\-p\fP +Total number of periods to play or capture. +.TP +\fI\-\-log=#\fP +Write stderr and stdout output to this log file. +.TP +\fI\-\-file=#\fP +Input WAV file for playback. +.TP +\fI\-\-saveplay=#\fP +Target WAV file to save capture test content. +.TP +\fI\-\-local\fP +Internal loopback mode. +Playback, capture and analysis internal to ALSABAT only. This is intended +for developers to test new ALSABAT features as no audio is routed outside +of ALSABAT. + +.SH EXAMPLES + +.TP +\fBalsabat \-P plughw:0,0 \-C plughw:0,0 \-c 2 \-f S32_LE \-F 250\fR +Generate and play a sine wave of 250 Hertz with 2 channel and S32_LE format, +and then capture and analyze. + +.TP +\fBalsabat \-P plughw:0,0 \-C plughw:0,0 \-\-file 500Hz.wav\fR +Play the RIFF WAV file "500Hz.wav" which contains 500 Hertz waveform LPCM +data, and then capture and analyze. + +.SH RETURN VALUE +.br +On success, returns 0. +.br +If no peak be detected, returns -1001; +.br +If only DC be detected, returns -1002; +.br +If peak frequency does not match with the target frequency, returns -1003. + +.SH SEE ALSO +\fB +aplay(1) +\fP + +.SH BUGS +Currently only support RIFF WAV format with PCM data. Please report any bugs to +the alsa-devel mailing list. + +.SH AUTHOR +\fBalsabat\fP is by Liam Girdwood <liam.r.girdwood@linux.intel.com>, Bernard +Gautier <bernard.gautier@intel.com> and Han Lu <han.lu@intel.com>. +This document is by Liam Girdwood <liam.r.girdwood@linux.intel.com> and Han Lu +<han.lu@intel.com>. diff --git a/bat/bat.1 b/bat/bat.1 deleted file mode 100644 index e00fc27..0000000 --- a/bat/bat.1 +++ /dev/null @@ -1,158 +0,0 @@ -.TH BAT 1 "20th October 2015" -.SH NAME -bat \- command\-line sound tester for ALSA sound card driver - -.SH SYNOPSIS -\fBbat\fP [\fIflags\fP] - -.SH DESCRIPTION -\fBBAT(Basic Audio Tester)\fP is a simple command\-line utility intended -to help automate audio driver and sound server testing with little human -interaction. BAT can be used to test audio quality, stress test features -and test audio before and after PM state changes. - -BAT's design is relatively simple. BAT plays an audio stream and captures -the same stream in either a digital or analog loop back. It then compares -the captured stream using a FFT to the original to determine if the test -case passes or fails. - -BAT can either run wholly on the target machine being tested (standalone -mode) or can run as a client/server mode where by bat client runs on the -target and runs as a server on a separate tester machine. The client/server -mode still requires some manual interaction for synchronization, but this -is actively being developed for future releases. - -The hardware testing configuration may require the use of an analog cable -connecting target to tester machines or a cable to create an analog -loopback if no loopback mode is not available on the sound hardware that -is being tested. -An analog loopback cable can be used to connect the "line in" to "line out" -jacks to create a loopback. If only headphone and mic jacks (or combo jack) -are available then the following simple circuit can be used to create an -analog loopback :- - -https://source.android.com/devices/audio/loopback.html - -.SH OPTIONS -.TP -\fI\-h, \-\-help\fP -Help: show syntax. -.TP -\fI\-D\fP -Select sound card to be tested by name. -.TP -\fI\-P\fP -Select the playback PCM device. -.TP -\fI\-C\fP -Select the capture PCM device. -.TP -\fI\-f\fP -Sample format -.br -Recognized sample formats are: U8 S16_LE S24_3LE S32_LE -.br -Some of these may not be available on selected hardware -.br -The available format shortcuts are: -.nf -\-f cd (16 bit little endian, 44100, stereo) [\-f S16_LE \-c2 \-r44100] -\-f dat (16 bit little endian, 48000, stereo) [\-f S16_LE \-c2 \-r48000] -.fi -If no format is given S16_LE is used. -.TP -\fI\-c\fP -The number of channels. The default is one channel. -Valid values at the moment are 1 or 2. -.TP -\fI\-r\fP -Sampling rate in Hertz. The default rate is 44100 Hertz. -Valid values depends on hardware support. -.TP -\fI\-n\fP -Duration of generated signal. -The value could be either of the two forms: -.br -1. Decimal integer, means number of frames; -.br -2. Floating point with suffix 's', means number of seconds. -.br -The default is 2 seconds. -.TP -\fI\-k\fP -Sigma k value for analysis. -.br -The analysis function reads data from WAV file, run FFT against the data -to get magnitude of frequency vectors, and then calculates the average -value and standard deviation of frequency vectors. After that, we define -a threshold: -.br -threshold = k * standard_deviation + mean_value -.br -Frequencies with amplitude larger than threshold will be recognized as a -peak, and the frequency with largest peak value will be recognized as a -detected frequency. -.br -BAT then compares the detected frequency to target frequency, to decide -if the detecting passes or fails. -.br -The default value is 3.0. -.TP -\fI\-F\fP -Target frequency for signal generation and analysis, in Hertz. -The default is 997.0 Hertz. -Valid range is (DC_THRESHOLD, 40% * Sampling rate). -.TP -\fI\-p\fP -Total number of periods to play or capture. -.TP -\fI\-\-log=#\fP -Write stderr and stdout output to this log file. -.TP -\fI\-\-file=#\fP -Input WAV file for playback. -.TP -\fI\-\-saveplay=#\fP -Target WAV file to save capture test content. -.TP -\fI\-\-local\fP -Internal loopback mode. -Playback, capture and analysis internal to BAT only. This is intended for -developers to test new BAT features as no audio is routed outside of BAT. - -.SH EXAMPLES - -.TP -\fBbat \-P plughw:0,0 \-C plughw:0,0 \-c 2 \-f S32_LE \-F 250\fR -Generate and play a sine wave of 250 Hertz with 2 channel and S32_LE format, -and then capture and analyze. - -.TP -\fBbat \-P plughw:0,0 \-C plughw:0,0 \-\-file 500Hz.wav\fR -Play the RIFF WAV file "500Hz.wav" which contains 500 Hertz waveform LPCM -data, and then capture and analyze. - -.SH RETURN VALUE -.br -On success, returns 0. -.br -If no peak be detected, returns -1001; -.br -If only DC be detected, returns -1002; -.br -If peak frequency does not match with the target frequency, returns -1003. - -.SH SEE ALSO -\fB -aplay(1) -\fP - -.SH BUGS -Currently only support RIFF WAV format with PCM data. Please report any bugs to -the alsa-devel mailing list. - -.SH AUTHOR -\fBbat\fP is by Liam Girdwood <liam.r.girdwood@linux.intel.com>, Bernard Gautier -<bernard.gautier@intel.com> and Han Lu <han.lu@intel.com>. -This document is by Liam Girdwood <liam.r.girdwood@linux.intel.com> and Han Lu -<han.lu@intel.com>. diff --git a/bat/bat.c b/bat/bat.c index 086b9fa..ddb60b7 100644 --- a/bat/bat.c +++ b/bat/bat.c @@ -272,7 +272,7 @@ static void test_capture(struct bat *bat) static void usage(struct bat *bat) { fprintf(bat->log, -_("Usage: bat [-options]...\n" +_("Usage: alsabat [-options]...\n" "\n" " -h, --help this help\n" " -D pcm device for both playback and capture\n"