The node red crash when apply the flow include mic. maybe i use it a wrong way. pls help me

[chaim007]

-- flow ---

[{"id":"5bc85df0.cb7054","type":"Mic","z":"d2f2d81d.a7ac98","name":"麦克风","outputPayloadType":"stream","endian":"little","bitwidth":"16","encoding":"signed-integer","channels":"1","device":"plughw:1,0","rate":"22050","silenceTimeout":0,"exitOnSilence":false,"debug":false,"active":true,"x":595.5,"y":178,"wires":[["c53422cc.b2d75","87eda3ca.a0e5f"]]},{"id":"c53422cc.b2d75","type":"ui_audio","z":"d2f2d81d.a7ac98","name":"音频输出","group":"91445def.c9f6a","voice":"en-US","always":"","x":825.5,"y":168,"wires":[]},{"id":"87eda3ca.a0e5f","type":"debug","z":"d2f2d81d.a7ac98","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":809.5,"y":258,"wires":[]},{"id":"d6a83a92.776ab8","type":"inject","z":"d2f2d81d.a7ac98","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":true,"onceDelay":0.1,"x":388.5,"y":167,"wires":[["5bc85df0.cb7054"]]},{"id":"91445def.c9f6a","type":"ui_group","z":"","name":"Default","tab":"28405f75.1ff78","disp":true,"width":"6","collapse":false},{"id":"28405f75.1ff78","type":"ui_tab","z":"","name":"Home","icon":"dashboard"}]

---version ---

• node red
  0.18.6

• node
  root@ubuntu:~# node -v
  v8.11.2

---- errors ----

30 May 20:38:29 - [info] Starting flows
30 May 20:38:29 - [info] Started flows
30 May 20:38:29 - [info] [Mic:麦克风] Event input: 1527683909861
30 May 20:38:29 - [info] [Mic:麦克风] Stream event startComplete
30 May 20:38:29 - [red] Uncaught Exception:
30 May 20:38:29 - Error: spawn arecord ENOENT
at _errnoException (util.js:992:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19)
at onErrorNT (internal/child_process.js:372:16)
at _combinedTickCallback (internal/process/next_tick.js:138:11)
at process._tickCallback (internal/process/next_tick.js:180:9)

[Dani7B]

Hello. My guess it would be that some of this node's dependencies are missing.

Node-RED node for microphone (based on nodejs mic : a simple stream wrapper for arecord (Linux (including Raspbian)) and sox (Mac/Windows)).

In my case, on Mac OS, I had to install sox to prevent it from crashing. On Linux I had to install arecord.

[MattVador]

Hi, have you tried to run package 'mic' in nodejs (without nodered) ?

[juggledad]

I just hit this also - now I have not installed any dependency HOWEVER, the node should be handling the error and not causing Node-red to crash.

4 Dec 11:29:54 - [info] [Mic:e664dd1f.63e33] Stream event startComplete
4 Dec 11:29:54 - [red] Uncaught Exception:
4 Dec 11:29:54 - Error: spawn rec ENOENT
at Process.ChildProcess._handle.onexit (internal/child_process.js:264:19)
at onErrorNT (internal/child_process.js:456:16)
at processTicksAndRejections (internal/process/task_queues.js:80:21)
Pauls-mini-4:.node-red Paul$

This happened on a Mac
macOS 10.14.6
Node-RED v1.0.2
Node.js v12.13.0
Dashboard v2.19.1

Couldn't the node check for a recorder and return an error message if none is available?