!!################################ !!ALSA Information Script v 0.4.65 !!################################ !!Script ran on: Thu Feb 11 17:29:40 UTC 2021 !!Linux Distribution !!------------------ ID_LIKE=debian !!DMI Information !!--------------- Manufacturer: Product Name: Product Version: Firmware Version: System SKU: Board Vendor: Board Name: !!ACPI Device Status Information !!--------------- !!Kernel Information !!------------------ Kernel release: 5.4.83 Operating System: GNU/Linux Architecture: armv6l Processor: unknown SMP Enabled: No !!ALSA Version !!------------ Driver version: k5.4.83 Library version: 1.1.8 Utilities version: 1.1.8 !!Loaded ALSA modules !!------------------- snd_soc_simple_card !!Sound Servers on this system !!---------------------------- Pulseaudio: Installed - Yes (/usr/bin/pulseaudio) Running - No !!Soundcards recognised by ALSA !!----------------------------- 0 [sndrpisimplecar]: snd_rpi_simple_ - snd_rpi_simple_card snd_rpi_simple_card !!PCI Soundcards installed in the system !!-------------------------------------- !!Modprobe options (Sound related) !!-------------------------------- snd_pcsp: index=-2 snd_usb_audio: index=-2 snd_atiixp_modem: index=-2 snd_intel8x0m: index=-2 snd_via82xx_modem: index=-2 snd_bcm2835: enable_compat_alsa=0 snd_bcm2835: enable_hdmi=1 !!Loaded sound module options !!--------------------------- !!Module: snd_soc_simple_card * : !!ALSA Device nodes !!----------------- crw-rw---- 1 root audio 116, 0 Feb 11 16:48 /dev/snd/controlC0 crw-rw---- 1 root audio 116, 24 Feb 11 16:48 /dev/snd/pcmC0D0c crw-rw---- 1 root audio 116, 16 Feb 11 16:48 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 1 Feb 11 12:43 /dev/snd/seq crw-rw---- 1 root audio 116, 33 Feb 11 16:48 /dev/snd/timer /dev/snd/by-path: total 0 drwxr-xr-x 2 root root 60 Feb 11 12:43 . drwxr-xr-x 3 root root 160 Feb 11 12:43 .. lrwxrwxrwx 1 root root 12 Feb 11 16:48 platform-asoc-simple-card.0 -> ../controlC0 !!ALSA configuration files !!------------------------ !!User specific config file (~/.asoundrc) #This section makes a reference to your I2S hardware, adjust the card name # to what is shown in arecord -l after card x: before the name in [] #You may have to adjust channel count also but stick with default first pcm.dmic_hw { type hw card sndrpisimplecar channels 2 format S32_LE } #This is the software volume control, it links to the hardware above and after # saving the .asoundrc file you can type alsamixer, press F6 to select # your I2S mic then F4 to set the recording volume and arrow up and down # to adjust the volume # After adjusting the volume - go for 50 percent at first, you can do # something like # arecord -D dmic_sv -c2 -r 48000 -f S32_LE -t wav -V mono -v myfile.wav pcm.dmic_sv { type softvol slave.pcm dmic_hw control { name "Boost Capture Volume" card sndrpisimplecar } min_dB -3.0 max_dB 30.0 } !!Aplay/Arecord output !!-------------------- APLAY **** List of PLAYBACK Hardware Devices **** card 0: sndrpisimplecar [snd_rpi_simple_card], device 0: simple-card_codec_link snd-soc-dummy-dai-0 [simple-card_codec_link snd-soc-dummy-dai-0] Subdevices: 1/1 Subdevice #0: subdevice #0 ARECORD **** List of CAPTURE Hardware Devices **** card 0: sndrpisimplecar [snd_rpi_simple_card], device 0: simple-card_codec_link snd-soc-dummy-dai-0 [simple-card_codec_link snd-soc-dummy-dai-0] Subdevices: 1/1 Subdevice #0: subdevice #0 !!Amixer output !!------------- !!-------Mixer controls for card sndrpisimplecar Card hw:0 'sndrpisimplecar'/'snd_rpi_simple_card' Mixer name : '' Components : '' Controls : 1 Simple ctrls : 1 Simple mixer control 'Boost',0 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 255 Front Left: Capture 255 [100%] [27.60dB] Front Right: Capture 255 [100%] [27.60dB] !!Alsactl output !!-------------- --startcollapse-- state.sndrpisimplecar { control.1 { iface MIXER name 'Boost Capture Volume' value.0 255 value.1 255 comment { access 'read write user' type INTEGER count 2 range '0 - 255' tlv '0000000100000008fffffed40000000c' dbmin -300 dbmax 2760 dbvalue.0 2760 dbvalue.1 2760 } } } --endcollapse-- !!All Loaded Modules !!------------------ 8021q aes_arm aes_generic bcm2835_codec bcm2835_isp bcm2835_mmal_vchiq bcm2835_v4l2 ccm cfg80211 ctr fixed garp i2c_bcm2835 i2c_dev ip_tables ipv6 libaes libarc4 libsha256 llc mac80211 mc my_loader raspberrypi_hwmon regmap_mmio rfkill rtl8192c_common rtl8192cu rtl_usb rtlwifi sha256_generic snd snd_bcm2835 snd_compress snd_pcm snd_pcm_dmaengine snd_soc_bcm2835_i2s snd_soc_core snd_soc_simple_card snd_soc_simple_card_utils snd_timer spi_bcm2835 spidev stp uio uio_pdrv_genirq v4l2_mem2mem vc_sm_cma videobuf2_common videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_vmalloc videodev x_tables !!ALSA/HDA dmesg !!-------------- [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 64960 [ 0.000000] Kernel command line: coherent_pool=1M snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 smsc95xx.macaddr=B8:27:EB:31:69:1B vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000 console=ttyAMA0,115200 console=tty1 root=PARTUUID=41a74701-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes, linear) -- [ 10.347277] i2c /dev entries driver [ 10.554444] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned. [ 10.658959] my_loader: loading out-of-tree module taints kernel. -- [ 17.595673] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned. [ 17.616707] asoc-simple-card asoc-simple-card.0: snd-soc-dummy-dai <-> 20203000.i2s mapping ok [ 17.682662] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video13 !!Packages installed !!-------------------- ii alsa-utils 1.1.8-2 armhf Utilities for configuring and using ALSA