Where is the settings app located in Jetson nano 2gb?

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hey, I am trying to change the default mic on my Jetson Nano 2GB developer kit, but I am unable to find the settings app. Can someone please tell me how to change the default mic?

2

What kind of mic device you connected on Nano?
Via I2S or USB?

3

Hi, I am using a USB mic

5

Hi,
Please execute $ arecord -l and check the list. The command lists all audio recording devices.

6

I ran the command, and its showing that the mic is in card 2. Do you want the full output? i can copy it here if you do.

7

Hi,
You can try arecord command like:

$ arecord -D hw:2,0 -c2 -d 10 -r 44100 -f S16_LE a.wav

hw:2,0 means card 2, device 0

1 Like
8

I ran the command, and this was the output:

Recording WAVE 'a.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
arecord: set_params:1305: Channels count non available

Can you tell me what to do next?

9

Hi,
Probably it supports single channel only. Please try -c 1

10

Hi @DaneLLL , I ran the command arecord -D hw:2,0 -c1 -d 10 -r 44100 -f S16_LE a.wav just like you suggested, and this was the output:

Recording WAVE 'a.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Mono
Warning: rate is not accurate (requested = 44100Hz, got = 48000Hz)
         please, try the plug plugin

This was the output, please tell me what to do next

11

Hi,
Please try -r 48000. Seems like the mix does not support 44.1kHz.

12

Hi,
I tried it with -r 48000, and got this result:

Recording WAVE 'a.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
13

btw @DaneLLL , what does this command do? just asking to learn lol, and also. the default mic is still unchanged even tho I input the correct frequency.

sorry if these doubts were stupid im a newbie to linux

14

Hi,
It is to record audio for 10 seconds. If it can be run successfully, you should see a.wav is saved.

15

hi, i am unable to find where a.wav is located, can you please help me with that?

16

Hi,
You can save it to /tmp/:

$ arecord -D hw:2,0 -c1 -d 10 -r 48000 -f S16_LE /tmp/a.wav

And run $ ls /tmp/ to check if it is saved.

17

Hey,
So the a.wav file is saved now and the audio is working fine, but is the mic now my default mic?

Edit: So i just checked, and it its’t the default mic. I only think the command records audio. can you please suggest a way to set the default mic now, the recording works really good though!

18

Hi,
This would need other users to share experience. There should be a GUI similar to Windows control panel and you can configure the audio input device.

19

Hi, @DaneLLL

I searched so much for the “windows control panel” in jetson nano, but I couldn’t find anything that relates to audio settings/changing the default mic. Do you happen to know its location?

21

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