Hi Alan, Thanks for the reply. I’m working on an embedded board which has 6 devices where 0-3 are playback and 4-6 are capture devices. Playback works fine but not recording. Whatever format I use I get an error saying as `unable to hw params` I tried plughw which also didn’t worked. I’m not sure where and how to debug this issue. I have a mono mic for recording and it took Mono. I also tried with 8bit but I get same error. Thanks & Regards, Vijay Rakesh > On 22-Mar-2021, at 17:43, Alan Corey <alan01346@xxxxxxxxx> wrote: > > This works for me > arecord -D hw:0,0 -d 5 -f S16_LE -r 48000 -c 2 test.wav > Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo > root@pbp:/tmp/snd# ^C > > Do you really have 6 devices on card 0? And I don't know that I've > ever seen a 32 bit wav file, 8 is often enough. Need to specify # of > channels I think like -c 2. But I copied your line and started > hacking it until it worked. > > The error message could probably be more informative, like which > argument does it have a problem with. > > >> On 3/22/21, Vijay Rakesh Munganda <vijayrakeshmunganda@xxxxxxxxx> wrote: >> Hi All, >> >> Any suggestions? >> >> Thanks & Regards, >> Vijay Rakesh >> >>> On 01-Feb-2021, at 14:00, Vijay Rakesh Munganda >>> <vijayrakeshmunganda@xxxxxxxxx> wrote: >>> >>> Hi Clemens, >>> >>> I have tried both pulghw and also given supported sample rate/format, but >>> I get same error. >>> >>> root@test:~# arecord -D hw:0,6 -d 5 -f S32_LE -r 48000 test.wav >>> Recording WAVE 'test.wav' : Signed 32 bit Little Endian, Rate 48000 Hz, >>> Mono >>> arecord: set_params:1405: Unable to install hw params: >>> ACCESS: RW_INTERLEAVED >>> FORMAT: S32_LE >>> SUBFORMAT: STD >>> SAMPLE_BITS: 32 >>> FRAME_BITS: 32 >>> CHANNELS: 1 >>> RATE: 48000 >>> PERIOD_TIME: 125000 >>> PERIOD_SIZE: 6000 >>> PERIOD_BYTES: 24000 >>> PERIODS: 4 >>> BUFFER_TIME: 500000 >>> BUFFER_SIZE: 4000 >>> BUFFER_BYTES: 96000 >>> TICK_TIME: 0 >>> >>> Thanks & Regards, >>> Vijay Rakesh >>> >>>>> On 30-Jan-2021, at 22:13, Clemens Ladisch via Alsa-user >>>>> <alsa-user@xxxxxxxxxxxxxxxxxxxxx> wrote: >>>>> >>>> Vijay Rakesh Munganda wrote: >>>>> I had tried to record a sample audio using arecord, “arecord hw:0,6 -d >>>>> 10 test.wav” but I got an error as unable to install hw params. >>>> >>>> Use plughw:0,x instead of hw:0,x to get automatic sample format >>>> conversion. >>>> >>>> Or tell arecord to use a sample rate/format that your hardware supports. >>>> >>>> >>>> Regards, >>>> Clemens >>>> >>>> >>>> _______________________________________________ >>>> Alsa-user mailing list >>>> Alsa-user@xxxxxxxxxxxxxxxxxxxxx >>>> https://lists.sourceforge.net/lists/listinfo/alsa-user >> > > > -- > ------------- > Education is contagious. _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
