|
Team, i am still looking for help/hints for this topic. if this is not the right forum, pls advise where i could turn to. is there a way to contact the alsa developers? i attached some new logs. there are outputs for: - dmesg - lsusb - amixer -c 1 - arecord -l - arecord -L - arecord -vv -D "sysdefault:CARD=U12dB" test.wav i attached 5 files. i collected outputs for two OS (Debian Wheezy and Raspbian) and with two microphones as well. one mic is fully supported (Samson C01U) and the other is the subject of this query (UMIK-1). the only difference I can see at this level is the sample format the mics are using: - Samson C01U - /S16_LE/ - UMIK-1 - /S24-3LE/ i verified, the UMIK-1 mic is operational under Win7. pls advise, regards, zoltan -------- Original Message --------
Team, I am trying to record with alsa and Umik-1 (http://www.minidsp.com/products/acoustic-measurement/umik-1) on Debian and Raspbian (on Raspberry Pi hardware). in both cases, I am experiencing the following: - "lsusb" displays: [Bus 001 Device 005: ID 2752:0007] - "amixer" and "arecord -l -L" can see the device and i can adjust the capture level as well. - but recording with "arecord" does not happen. the recording starts, but no input is detected. pls see the attached log on each of the above steps. with same steps i was able to record with a "Samson C01u"
microphone.
kindly advise on troubleshooting or any possible next steps.
thank you in advance, regards, zoltan
|
#
#
# Inserting other USB Microphone
# Samson Technologies Corp. C01U
#
# this is working
#
#
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# dmesg
<...>
[ 377.179452] usb 1-1.2: new full-speed USB device number 5 using dwc_otg
[ 377.294280] usb 1-1.2: New USB device found, idVendor=17a0, idProduct=0001
[ 377.294317] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 377.294337] usb 1-1.2: Product: USB Microphone
[ 377.294354] usb 1-1.2: Manufacturer: USB Microphone
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# lsusb
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
Bus 001 Device 005: ID 17a0:0001 Samson Technologies Corp. C01U condenser microphone
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# amixer -c 1
Simple mixer control 'Mic',0
Capabilities: cvolume cswitch cswitch-joined penum
Capture channels: Front Left - Front Right
Limits: Capture 0 - 55
Front Left: Capture 31 [56%] [0.00dB] [on]
Front Right: Capture 31 [56%] [0.00dB] [on]
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: Microphone [USB Microphone], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# arecord -L
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=Microphone
USB Microphone, USB Audio
Default Audio Device
sysdefault:CARD=Microphone
USB Microphone, USB Audio
Default Audio Device
front:CARD=Microphone,DEV=0
USB Microphone, USB Audio
Front speakers
surround40:CARD=Microphone,DEV=0
USB Microphone, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=Microphone,DEV=0
USB Microphone, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Microphone,DEV=0
USB Microphone, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Microphone,DEV=0
USB Microphone, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Microphone,DEV=0
USB Microphone, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Microphone,DEV=0
USB Microphone, USB Audio
IEC958 (S/PDIF) Digital Audio Output
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# arecord -vv -D "sysdefault:CARD=Microphone" test.wav
Recording WAVE 'test.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
Plug PCM: Rate conversion PCM (48000, sformat=U8)
Converter: linear-interpolation
Protocol version: 10002
Its setup is:
stream : CAPTURE
access : RW_INTERLEAVED
format : U8
subformat : STD
channels : 1
rate : 8000
exact rate : 8000 (8000/1)
msbits : 8
buffer_size : 2730
period_size : 170
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 170
period_event : 0
start_threshold : 1
stop_threshold : 2730
silence_threshold: 0
silence_size : 0
boundary : 178913280
Slave: Route conversion PCM (sformat=S16_LE)
Transformation table:
0 <- 0*0.5 + 1*0.5
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : U8
subformat : STD
channels : 1
rate : 48000
exact rate : 48000 (48000/1)
msbits : 8
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 6
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
Slave: Direct Snoop PCM
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 6
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
Hardware PCM card 1 'USB Microphone' device 0 subdevice 0
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : ENABLE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 1
stop_threshold : 1073741824
silence_threshold: 0
silence_size : 0
boundary : 1073741824
appl_ptr : 0
hw_ptr : 0
#+ | 00%^C
Aborted by signal Interrupt...
root@raspberrypi:~# #
#
# Inserting the USB Microphone
# MiniDSP UMIK-1
#
# this is NOT working
#
#
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# dmesg
<...>
[ 37.939475] usb 1-1.2: new full-speed USB device number 4 using dwc_otg
[ 38.054688] usb 1-1.2: New USB device found, idVendor=2752, idProduct=0007
[ 38.054727] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 38.054747] usb 1-1.2: Product: Umik-1 Gain: 12dB
[ 38.054764] usb 1-1.2: Manufacturer: miniDSP
[ 38.054782] usb 1-1.2: SerialNumber: 00002
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# lsusb
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
Bus 001 Device 004: ID 2752:0007
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# amixer -c 1
Simple mixer control 'Mic',0
Capabilities: cvolume cswitch cswitch-joined penum
Capture channels: Front Left - Front Right
Limits: Capture 0 - 55
Front Left: Capture 52 [95%] [21.00dB] [on]
Front Right: Capture 52 [95%] [21.00dB] [on]
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: U12dB [Umik-1 Gain: 12dB], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# arecord -L
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=U12dB
Umik-1 Gain: 12dB, USB Audio
Default Audio Device
sysdefault:CARD=U12dB
Umik-1 Gain: 12dB, USB Audio
Default Audio Device
front:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
Front speakers
surround40:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
IEC958 (S/PDIF) Digital Audio Output
root@raspberrypi:~#
root@raspberrypi:~#
root@raspberrypi:~# arecord -vv -D "sysdefault:CARD=U12dB" test.wav
Recording WAVE 'test.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
Plug PCM: Rate conversion PCM (48000, sformat=U8)
Converter: linear-interpolation
Protocol version: 10002
Its setup is:
stream : CAPTURE
access : RW_INTERLEAVED
format : U8
subformat : STD
channels : 1
rate : 8000
exact rate : 8000 (8000/1)
msbits : 8
buffer_size : 2730
period_size : 170
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 170
period_event : 0
start_threshold : 1
stop_threshold : 2730
silence_threshold: 0
silence_size : 0
boundary : 178913280
Slave: Route conversion PCM (sformat=S24_3LE)
Transformation table:
0 <- 0*0.5 + 1*0.5
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : U8
subformat : STD
channels : 1
rate : 48000
exact rate : 48000 (48000/1)
msbits : 8
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 6
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
Slave: Direct Snoop PCM
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : S24_3LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 24
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 6
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
Hardware PCM card 1 'Umik-1 Gain: 12dB' device 0 subdevice 0
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : S24_3LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 24
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : ENABLE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 1
stop_threshold : 1073741824
silence_threshold: 0
silence_size : 0
boundary : 1073741824
appl_ptr : 0
hw_ptr : 0
#+ | 00%^C
Aborted by signal Interrupt...
root@raspberrypi:~#
#
# logs for Samson USB Microphone C01U on Debian Wheezy
# recording ok
#
zsalamon@kahoolawe:~$ dmesg
<...>
[ 356.040054] usb 5-1: new full-speed USB device number 3 using uhci_hcd
[ 356.239074] usb 5-1: New USB device found, idVendor=17a0, idProduct=0001
[ 356.239078] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 356.239082] usb 5-1: Product: USB Microphone
[ 356.239084] usb 5-1: Manufacturer: USB Microphone
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ lsusb
<...>
Bus 005 Device 003: ID 17a0:0001 Samson Technologies Corp. C01U condenser microphone
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ amixer -c 1
Simple mixer control 'Mic',0
Capabilities: cvolume cswitch cswitch-joined penum
Capture channels: Front Left - Front Right
Limits: Capture 0 - 55
Front Left: Capture 55 [100%] [24.00dB] [on]
Front Right: Capture 55 [100%] [24.00dB] [on]
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
card 1: Microphone [USB Microphone], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ arecord -L
default
Playback/recording through the PulseAudio sound server
sysdefault:CARD=Intel
HDA Intel, AD198x Analog
Default Audio Device
front:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
Front speakers
surround40:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
sysdefault:CARD=Microphone
USB Microphone, USB Audio
Default Audio Device
front:CARD=Microphone,DEV=0
USB Microphone, USB Audio
Front speakers
surround40:CARD=Microphone,DEV=0
USB Microphone, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=Microphone,DEV=0
USB Microphone, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Microphone,DEV=0
USB Microphone, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Microphone,DEV=0
USB Microphone, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Microphone,DEV=0
USB Microphone, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Microphone,DEV=0
USB Microphone, USB Audio
IEC958 (S/PDIF) Digital Audio Output
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ arecord -vv -D "sysdefault:CARD=Microphone" test.wav
Recording WAVE 'test.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
Plug PCM: Rate conversion PCM (48000, sformat=U8)
Converter: libspeex (builtin)
Protocol version: 10002
Its setup is:
stream : CAPTURE
access : RW_INTERLEAVED
format : U8
subformat : STD
channels : 1
rate : 8000
exact rate : 8000 (8000/1)
msbits : 8
buffer_size : 2730
period_size : 170
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 170
period_event : 0
start_threshold : 1
stop_threshold : 2730
silence_threshold: 0
silence_size : 0
boundary : 178913280
Slave: Route conversion PCM (sformat=S16_LE)
Transformation table:
0 <- 0*0.5 + 1*0.5
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : U8
subformat : STD
channels : 1
rate : 48000
exact rate : 48000 (48000/1)
msbits : 8
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 6
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
Slave: Direct Snoop PCM
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 6
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
Hardware PCM card 1 'USB Microphone' device 0 subdevice 0
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : ENABLE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 1
stop_threshold : 1073741824
silence_threshold: 0
silence_size : 0
boundary : 1073741824
appl_ptr : 0
hw_ptr : 0
########### + | 25%^C
Aborted by signal Interrupt...
zsalamon@kahoolawe:~$
#
# logs for UMIK-1 USB Microphone on Debian Wheezy
# recording NOT ok
#
zsalamon@kahoolawe:~$ dmesg
<...>
[ 684.640062] usb 5-1: new full-speed USB device number 4 using uhci_hcd
[ 684.836090] usb 5-1: New USB device found, idVendor=2752, idProduct=0007
[ 684.836099] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 684.836106] usb 5-1: Product: Umik-1 Gain: 12dB
[ 684.836112] usb 5-1: Manufacturer: miniDSP
[ 684.836117] usb 5-1: SerialNumber: 00002
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ lsusb
<...>
Bus 005 Device 004: ID 2752:0007
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ amixer -c 1
Simple mixer control 'Mic',0
Capabilities: cvolume cswitch cswitch-joined penum
Capture channels: Front Left - Front Right
Limits: Capture 0 - 55
Front Left: Capture 50 [91%] [19.00dB] [on]
Front Right: Capture 50 [91%] [19.00dB] [on]
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
card 1: U12dB [Umik-1 Gain: 12dB], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ arecord -L
default
Playback/recording through the PulseAudio sound server
sysdefault:CARD=Intel
HDA Intel, AD198x Analog
Default Audio Device
front:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
Front speakers
surround40:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
sysdefault:CARD=U12dB
Umik-1 Gain: 12dB, USB Audio
Default Audio Device
front:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
Front speakers
surround40:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=U12dB,DEV=0
Umik-1 Gain: 12dB, USB Audio
IEC958 (S/PDIF) Digital Audio Output
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$
zsalamon@kahoolawe:~$ arecord -vv -D "sysdefault:CARD=U12dB" test.wav
Recording WAVE 'test.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
Plug PCM: Rate conversion PCM (48000, sformat=U8)
Converter: libspeex (builtin)
Protocol version: 10002
Its setup is:
stream : CAPTURE
access : RW_INTERLEAVED
format : U8
subformat : STD
channels : 1
rate : 8000
exact rate : 8000 (8000/1)
msbits : 8
buffer_size : 2730
period_size : 170
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 170
period_event : 0
start_threshold : 1
stop_threshold : 2730
silence_threshold: 0
silence_size : 0
boundary : 178913280
Slave: Route conversion PCM (sformat=S24_3LE)
Transformation table:
0 <- 0*0.5 + 1*0.5
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : U8
subformat : STD
channels : 1
rate : 48000
exact rate : 48000 (48000/1)
msbits : 8
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 6
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
Slave: Direct Snoop PCM
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : S24_3LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 24
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : NONE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 6
stop_threshold : 16384
silence_threshold: 0
silence_size : 0
boundary : 1073741824
Hardware PCM card 1 'Umik-1 Gain: 12dB' device 0 subdevice 0
Its setup is:
stream : CAPTURE
access : MMAP_INTERLEAVED
format : S24_3LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 24
buffer_size : 16384
period_size : 1024
period_time : 21333
tstamp_mode : ENABLE
period_step : 1
avail_min : 1024
period_event : 0
start_threshold : 1
stop_threshold : 1073741824
silence_threshold: 0
silence_size : 0
boundary : 1073741824
appl_ptr : 0
hw_ptr : 0
#+ | 00%^C
Aborted by signal Interrupt...
zsalamon@kahoolawe:~$
root@raspberrypi:~#
root@raspberrypi:~# lsusb
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
Bus 001 Device 004: ID 2752:0007
root@raspberrypi:~#
root@raspberrypi:~# lsusb -v
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.
<...>
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
<...>
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
<...>
Bus 001 Device 004: ID 2752:0007
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x2752
idProduct 0x0007
bcdDevice 1.00
iManufacturer 1 miniDSP
iProduct 2 Umik-1 Gain: 12dB
iSerial 3 00002
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 128
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 40
bInCollection 1
baInterfaceNr( 0) 1
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Microphone
bAssocTerminal 2
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 2
wTerminalType 0x0101 USB Streaming
bAssocTerminal 1
bSourceID 3
iTerminal 0
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 3
bSourceID 1
bControlSize 1
bmaControls( 0) 0x01
Mute Control
bmaControls( 1) 0x02
Volume Control
bmaControls( 2) 0x02
Volume Control
iFeature 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 2
bDelay 1 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 29
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
junk at descriptor end: 11 2b 00 80 3e 00 22 56 00 00 7d 00 44 ac 00 80 bb 00
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
Usage Type Data
wMaxPacketSize 0x0120 1x 288 bytes
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Device Status: 0x0000
(Bus Powered)
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