JACK in Elphel cameras - Revision history

OneArtPlease at 13:38, 17 November 2009

2009-11-17T13:38:32Z

← Older revision		Revision as of 13:38, 17 November 2009
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	[root@Elphel353 /]# jackd -dalsa -dplug:hw:0 -n3 -p512 -s -S		[root@Elphel353 /]# jackd -dalsa -dplug:hw:0 -n3 -p512 -s -S

	You can start JACK server in ~~foreground~~ as		You can start JACK server in background as
	jackd -dalsa -dplug:hw:0 -n3 -p512 -s -S 1>/dev/null &		jackd -dalsa -dplug:hw:0 -n3 -p512 -s -S 1>/dev/null &

Landy at 07:31, 17 November 2009

2009-11-17T07:31:49Z

← Older revision		Revision as of 07:31, 17 November 2009
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	end-threshold, default -35.0 dB		end-threshold, default -35.0 dB
	end-time, default 10 secs		end-time, default 10 secs
			You can start ''timemachine'' via options '''"-a" "-b" "-e"''' and record audio automaticaly

Landy at 07:30, 17 November 2009

2009-11-17T07:30:05Z

← Older revision		Revision as of 07:30, 17 November 2009
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	[root@Elphel353]# jack_connect system:capture_1 dmpaudio:in_1		[root@Elphel353]# jack_connect system:capture_1 dmpaudio:in_1

	Go to session #1, enter command "start". Now You starting record from mic. Playing some time and stop record		Go to session #1, enter command ''"start"''. Now You starting record from mic. Playing some time and stop record
	Enter command "stop". Trying play dumped wav file - You can hear sound from mic.		Enter command ''"stop"''.
	You can mixing two or more sources to dump file - use jack_connect for it.		Trying play dumped ''wav'' file - You can hear sound from mic.
			You can mixing two or more sources to dump file - use ''jack_connect'' for it.

	timemachine have next options:		'''timemachine''' have next options:

	Usage ./timemachine: [-h] [-i] [-c channels] [-n jack-name]		Usage ./timemachine: [-h] [-i] [-c channels] [-n jack-name]
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	[-a] [-b begin-threshold] [-e end-threshold] [-T end-time]		[-a] [-b begin-threshold] [-e end-threshold] [-T end-time]
	[port-name ...]		[port-name ...]

	-h show this help		-h show this help
	-i interactive mode (console instead of X11) also enabled		-i interactive mode (console instead of X11) also enabled
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	-e specify threshold below which automatic recording will end		-e specify threshold below which automatic recording will end
	-T specify silence length before automatic recording ends		-T specify silence length before automatic recording ends

	channels must be in the range 1-8, default 2		channels must be in the range 1-8, default 2
	jack-name, default "TimeMachine"		jack-name, default "TimeMachine"

Landy at 07:28, 17 November 2009

2009-11-17T07:28:10Z

← Older revision		Revision as of 07:28, 17 November 2009
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	and connect mic sound card to timemachine		and connect mic sound card to timemachine

	[root@Elphel353]# jack_connect system:capture_1 dmpaudio:in_1		[root@Elphel353]# jack_connect system:capture_1 dmpaudio:in_1

	Go to session #1, enter command "start". Now You starting record from mic. Playing some time and stop record		Go to session #1, enter command "start". Now You starting record from mic. Playing some time and stop record
	Enter command "stop". Trying play dumped wav file - You can hear sound from mic.		Enter command "stop". Trying play dumped wav file - You can hear sound from mic.
	You can mixing two or more sources to dump file:		You can mixing two or more sources to dump file - use jack_connect for it.

			timemachine have next options:

	Usage ./timemachine: [-h] [-i] [-c channels] [-n jack-name]		Usage ./timemachine: [-h] [-i] [-c channels] [-n jack-name]
	[-t buffer-length] [-p file prefix] [-f format]		[-t buffer-length] [-p file prefix] [-f format]
	[-a] [-b begin-threshold] [-e end-threshold] [-T end-time]		[-a] [-b begin-threshold] [-e end-threshold] [-T end-time]

Landy at 07:26, 17 November 2009

2009-11-17T07:26:04Z

← Older revision		Revision as of 07:26, 17 November 2009
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	metro:120_bpm		metro:120_bpm

	Go to session #3 and enter "start"		Go to session where started ''timemachine'' and enter "start"
	waiting some time - enter "stop"		waiting some time - enter "stop". Now You can play *.wav file and hear "beep"
	Now You can play *.wav file and hear "beep"
	Ok, disconnect metro:120_bpm from dmpaudio:in_1		Ok, disconnect metro:120_bpm from dmpaudio:in_1
			[root@Elphel353]# jack_disconnect metro:120_bpm dmpaudio:in_1
			and connect mic sound card to timemachine


	~~Go to session #1 and enter "start"~~
	~~waiting some time - enter "stop"~~
	~~Now You can play *.wav file and hear "beep"~~
	~~Ok, disconnect metro:120_bpm from dmpaudio:in_1 and connect audio capture channel to our dump program~~
	~~Connect mic to sound card.~~

	~~[root@Elphel353]# jack_disconnect metro:120_bpm dmpaudio:in_1~~
	[root@Elphel353]# jack_connect system:capture_1 dmpaudio:in_1		[root@Elphel353]# jack_connect system:capture_1 dmpaudio:in_1

	Go to session #1, enter command "start". Now You starting record from mic. Playing some time and stop record		Go to session #1, enter command "start". Now You starting record from mic. Playing some time and stop record
	Enter command "stop". Trying play dumped wav file - You can hear sound from mic.		Enter command "stop". Trying play dumped wav file - You can hear sound from mic.
	~~Ok, now~~ mixing two sources to dump file~~, go to session #2~~		You can mixing two or more sources to dump file:


	Usage ./timemachine: [-h] [-i] [-c channels] [-n jack-name]		Usage ./timemachine: [-h] [-i] [-c channels] [-n jack-name]
	[-t buffer-length] [-p file prefix] [-f format]		[-t buffer-length] [-p file prefix] [-f format]

Landy at 07:22, 17 November 2009

2009-11-17T07:22:02Z

← Older revision		Revision as of 07:22, 17 November 2009
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	where /var/tmp/hdd - path to directory where stored dump file		where /var/tmp/hdd - path to directory where stored dump file

	tm - prefix of file, filename look as "tm2009-09-27T05:08:44.wav"		tm - prefix of file, filename look as "tm2009-09-27T05:08:44.wav"

	dmpaudio - the JACK name timemachine will use		dmpaudio - the JACK name timemachine will use

Landy at 07:21, 17 November 2009

2009-11-17T07:21:23Z

← Older revision		Revision as of 07:21, 17 November 2009
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	For test output channels starting simple software metronom		For test output channels starting simple software metronom

	[root@Elphel353 /]# jack_metro -b 120 &		[root@Elphel353 /]# jack_metro -b 120 &

	Look at avialable channels:		Look at avialable channels:

	[root@Elphel353 /]# jack_lsp		[root@Elphel353 /]# jack_lsp
	system:capture_1		system:capture_1
	system:capture_2		system:capture_2
	system:playback_1		system:playback_1
	system:playback_2		system:playback_2
	metro:120_bpm		metro:120_bpm

	Connect headphones to audio card. Now "connect" metronom output to playback channels of soundcard as		Connect headphones to audio card. Now "connect" metronom output to playback channels of soundcard as
	~~[root@Elphel353 /]# jack_connect metro:120_bpm system:playback_1~~
	~~[root@Elphel353 /]# jack_connect metro:120_bpm system:playback_2~~

	~~You can hear "beep" in headphones.~~		[root@Elphel353 /]# jack_connect metro:120_bpm system:playback_1
	~~Ok, disconnect metronom from output channels~~		[root@Elphel353 /]# jack_connect metro:120_bpm system:playback_2
	[root@Elphel353 /]# ~~jack_disconnect~~ metro:120_bpm system:playback_1
	[root@Elphel353 /]# ~~jack_disconnect~~ metro:120_bpm system:playback_2

	For dump audio to wav files You can use timemachine		You can hear "beep" in headphones. Ok, disconnect metronom from output channels
	[root@Elphel353 /]# timemachine -c1 -t1 -p/var/tmp/hdd/tm -f wav -n dmpaudio
			[root@Elphel353 /]# jack_disconnect metro:120_bpm system:playback_1
			[root@Elphel353 /]# jack_disconnect metro:120_bpm system:playback_2

			For dump audio to wav files You can use utility '''''timemachine'''''

			[root@Elphel353 /]# timemachine -c1 -t1 -p/var/tmp/hdd/tm -f wav -n dmpaudio

	where /var/tmp/hdd - path to directory where stored dump file		where /var/tmp/hdd - path to directory where stored dump file
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	Connect, for example, metro:120_bpm to dmpaudio:in_1. Go to session #2 and enter		Connect, for example, metro:120_bpm to dmpaudio:in_1. Go to session #2 and enter

	[root@Elphel353]# jack_connect metro:120_bpm dmpaudio:in_1		[root@Elphel353]# jack_connect metro:120_bpm dmpaudio:in_1
	[root@Elphel353]# jack_lsp -c		[root@Elphel353]# jack_lsp -c
	system:capture_1		system:capture_1
	system:capture_2		system:capture_2
	system:playback_1		system:playback_1
	system:playback_2		system:playback_2
	metro:120_bpm		metro:120_bpm
	dmpaudio:in_1		dmpaudio:in_1
	dmpaudio:in_1		dmpaudio:in_1
	metro:120_bpm		metro:120_bpm

Landy at 07:19, 17 November 2009

2009-11-17T07:19:39Z

← Older revision		Revision as of 07:19, 17 November 2009
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	ALSA: final selected sample format for playback: 16bit little-endian		ALSA: final selected sample format for playback: 16bit little-endian
	ALSA: use 3 periods for playback		ALSA: use 3 periods for playback
	playback and capture sample rates do not match (48000 vs. 24000)		'''playback and capture sample rates do not match (48000 vs. 24000)'''

	if You have different samplerate for capture/playback(as example, on my USB sound card)		if You have different samplerate for capture/playback(as example, on my USB sound card)
	cancel jackd via ctrl-c and restart it via next command		cancel '''jackd''' via ctrl-c and restart it via next command

	[root@Elphel353 /]# jackd -dalsa -dplug:hw:0 -n3 -p512 -s -S		[root@Elphel353 /]# jackd -dalsa -dplug:hw:0 -n3 -p512 -s -S

	You can start JACK server in foreground as		You can start JACK server in foreground as
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	Ok, now we can look avialable audio channels.		Ok, now we can look avialable audio channels.
	(login another telnet session, session #2, if You not started jackd as foreground)		(login another telnet session, session #2, if You not started jackd as foreground)
	[root@Elphel353 /]# jack_lsp
	system:capture_1		[root@Elphel353 /]# jack_lsp
	system:capture_2		system:capture_1
	system:playback_1		system:capture_2
	system:playback_2		system:playback_1
			system:playback_2

	For test output channels starting simple software metronom		For test output channels starting simple software metronom

Landy at 07:18, 17 November 2009

2009-11-17T07:18:26Z

Landy at 07:17, 17 November 2009

2009-11-17T07:17:44Z

← Older revision		Revision as of 07:17, 17 November 2009
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	- connect USB sound card to camera		- connect USB sound card to camera

	- login via telnet and start jackd:		- login via telnet and start jackd:

← Older revision		Revision as of 07:18, 17 November 2009
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	[root@Elphel353 /]# jackd -dalsa -dhw:0 -n3 -p512 -s -S		[root@Elphel353 /]# jackd -dalsa -dhw:0 -n3 -p512 -s -S

	jackd 0.116.2		jackd 0.116.2
	Copyright 2001-2005 Paul Davis and others.		Copyright 2001-2005 Paul Davis and others.
	jackd comes with ABSOLUTELY NO WARRANTY		jackd comes with ABSOLUTELY NO WARRANTY
	This is free software, and you are welcome to redistribute it		This is free software, and you are welcome to redistribute it
	under certain conditions; see the file COPYING for details		under certain conditions; see the file COPYING for details
	JACK compiled with System V SHM support.		JACK compiled with System V SHM support.
	loading driver ..		loading driver ..
	creating alsa driver ... hw:0\|hw:0\|512\|3\|48000\|0\|0\|nomon\|swmeter\|soft-mode\|16bit		creating alsa driver ... hw:0\|hw:0\|512\|3\|48000\|0\|0\|nomon\|swmeter\|soft-mode\|16bit
	control device hw:0		control device hw:0
	configuring for 48000Hz, period = 512 frames (10.7 ms), buffer = 3 periods		configuring for 48000Hz, period = 512 frames (10.7 ms), buffer = 3 periods
	ALSA: final selected sample format for capture: 16bit little-endian		ALSA: final selected sample format for capture: 16bit little-endian
	ALSA: use 3 periods for capture		ALSA: use 3 periods for capture
	ALSA: final selected sample format for playback: 16bit little-endian		ALSA: final selected sample format for playback: 16bit little-endian
	ALSA: use 3 periods for playback		ALSA: use 3 periods for playback
	playback and capture sample rates do not match (48000 vs. 24000)		playback and capture sample rates do not match (48000 vs. 24000)

	if You have different samplerate for capture/playback(as example, on my USB sound card)		if You have different samplerate for capture/playback(as example, on my USB sound card)