{"id":200,"date":"2011-05-27T23:36:41","date_gmt":"2011-05-27T21:36:41","guid":{"rendered":"http:\/\/wp.oktay.com\/?p=200"},"modified":"2015-12-18T04:16:52","modified_gmt":"2015-12-18T02:16:52","slug":"alsa-man-man-man","status":"publish","type":"post","link":"https:\/\/wp.oktay.com\/?p=200","title":{"rendered":"alsa…. man man man…"},"content":{"rendered":"

vi \/etc\/asound.conf<\/p>\n

pcm.!default {
\n type plug
\n slave {
\n pcm \"hw:1,0\"
\n }
\n}
\nctl.!default {
\n type hw
\n card 1
\n}<\/code><\/p>\n

cat \/proc\/asound\/cards
\n 0 [Webcam ]: USB-Audio - Philips SPC 1030NC Webcam
\n Philips CE Philips SPC 1030NC Webcam at usb-orion-ehci.0-1.2, high speed
\n 1 [Audio ]: USB-Audio - USB Audio
\n USB Audio at usb-orion-ehci.0-1.5.7, full speed
\n<\/code><\/p>\n

sheeva[0][~]# aplay -l
\n**** Liste der Hardware-Ger\u00e4te (PLAYBACK) ****
\nKarte 1: Audio [USB Audio], Ger\u00e4t 0: USB Audio [USB Audio]
\n Sub-Ger\u00e4te: 1\/1
\n Sub-Ger\u00e4t #0: subdevice #0<\/code><\/p>\n

aplay -L
\nnull
\n Discard all samples (playback) or generate zero samples (capture)
\nsysdefault:CARD=Audio
\n USB Audio, USB Audio
\n Default Audio Device
\nfront:CARD=Audio,DEV=0
\n USB Audio, USB Audio
\n Front speakers
\nsurround40:CARD=Audio,DEV=0
\n USB Audio, USB Audio
\n 4.0 Surround output to Front and Rear speakers
\nsurround41:CARD=Audio,DEV=0
\n USB Audio, USB Audio
\n 4.1 Surround output to Front, Rear and Subwoofer speakers
\nsurround50:CARD=Audio,DEV=0
\n USB Audio, USB Audio
\n 5.0 Surround output to Front, Center and Rear speakers
\nsurround51:CARD=Audio,DEV=0
\n USB Audio, USB Audio
\n 5.1 Surround output to Front, Center, Rear and Subwoofer speakers
\nsurround71:CARD=Audio,DEV=0
\n USB Audio, USB Audio
\n 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
\niec958:CARD=Audio,DEV=0
\n USB Audio, USB Audio
\n IEC958 (S\/PDIF) Digital Audio Output
\n<\/code><\/p>\n

also, make sure the sample rate is set correctly in \/etc\/asound.conf, otherwise you will hear crackling sound like a bad CD:
\n
\n period_time 0
\n period_size 4096
\n buffer_size 131072
\n rate 22050<\/p>\n

<\/code>
\ndepending on the application you are using. In my case I am using espeak and aplay at 22050 hz.<\/p>\n

here you can see the default expected sample rate:
\nsheeva[1][~]# cat \/proc\/asound\/Audio\/stream0
\nUSB Audio at usb-orion-ehci.0-1.5.7, full speed : USB Audio<\/p>\n

Playback:
\n Status: Stop
\n Interface 1
\n Altset 1
\n Format: S16_LE
\n Channels: 2
\n Endpoint: 1 OUT (ADAPTIVE)
\n Rates: 48000<\/strong>
\n Interface 1
\n Altset 2
\n Format: S16_LE
\n Channels: 6
\n Endpoint: 1 OUT (ADAPTIVE)
\n Rates: 48000<\/strong><\/p>\n

Capture:
\n Status: Stop
\n Interface 2
\n Altset 1
\n Format: S16_LE
\n Channels: 2
\n Endpoint: 2 IN (ASYNC)
\n Rates: 48000<\/strong>
\n<\/code><\/p>\n

so overall my conf is looking like this now:
\n
\npcm.!default {
\n type plug
\n slave.pcm \"dmixer\"
\n}<\/p>\n

pcm.dmixer {
\n type dmix
\n ipc_key 1024
\n slave {
\n pcm \"hw:1,0\"
\n period_time 0
\n period_size 4096
\n buffer_size 131072
\n # period_size 1024
\n # buffer_size 4096
\n rate 22050
\n }
\n bindings {
\n 0 0
\n 1 1
\n }
\n}<\/p>\n

ctl.dmixer {
\n type hw
\n card 1
\n}<\/p>\n

<\/code><\/p>\n

test mic:
\narecord -f cd -d 5 -D dsnoop:1,0 -c 1 | aplay -<\/code>
\nor record:
\narecord -f cd -d 5 -D dsnoop:1,0 -c 1 test.wav<\/code>
\n5 sec record, 1 channel, cd quality, device dsnoop:1,0 (can be found with aplay -L)<\/p>\n

old – not working for me anymore:
\nasoundconf set-default-card Audio<\/p>\n

to set default f***ing card<\/p>\n

also worth to check the settings in:
\n\/etc\/modprobe.d\/alsa-base.conf<\/p>\n","protected":false},"excerpt":{"rendered":"

vi \/etc\/asound.conf pcm.!default { type plug slave { pcm “hw:1,0” } } ctl.!default { type hw card 1 } cat \/proc\/asound\/cards 0 [Webcam ]: USB-Audio – Philips SPC 1030NC Webcam Philips CE Philips SPC 1030NC Webcam at usb-orion-ehci.0-1.2, high speed 1 [Audio ]: USB-Audio – USB Audio USB Audio at usb-orion-ehci.0-1.5.7, full speed sheeva[0][~]# aplay… Continue reading alsa…. man man man…<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-200","post","type-post","status-publish","format-standard","hentry","category-bash","entry"],"_links":{"self":[{"href":"https:\/\/wp.oktay.com\/index.php?rest_route=\/wp\/v2\/posts\/200","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.oktay.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.oktay.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.oktay.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.oktay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=200"}],"version-history":[{"count":13,"href":"https:\/\/wp.oktay.com\/index.php?rest_route=\/wp\/v2\/posts\/200\/revisions"}],"predecessor-version":[{"id":624,"href":"https:\/\/wp.oktay.com\/index.php?rest_route=\/wp\/v2\/posts\/200\/revisions\/624"}],"wp:attachment":[{"href":"https:\/\/wp.oktay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=200"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.oktay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=200"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.oktay.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}