No Audio

[Mauro-go]

Hello Mauro are IV3SCP sorry for my English..... it seems that everything works, I see the signals, but do not feel anything. I'm using raspberry 2. What could be the problem?

`OpenWebRX - Open Source SDR Web App for Everyone! | for license see LICENSE file in the package

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Author contact info: Andras Retzler, HA7ILM randras@sdr.hu

[openwebrx-main] Configuration script not specified. I will use: "config_webrx.py" [openwebrx-import] Found plugin: plugins.dsp.csdr.plugin Ncat: Version 6.00 ( http://nmap.org/ncat ) [openwebrx-main] Started rtl_thread: rtl_sdr -s 2048000 -f 145525000 -p 0 -g 0 -| ncat -4l 4951 -k --send-only --allow 127.0.0.1 Found 1 device(s): 0: Generic, RTL2832U, SN: 77771111153705700

Using device 0: Generic RTL2832U Found Rafael Micro R820T tuner [R82XX] PLL not locked! Sampling at 2048000 S/s. Tuned to 145525000 Hz. Tuner gain set to automatic. Reading samples in async mode... [openwebrx-main] Starting watchdog threads. [openwebrx-main] Starting spectrum thread. [openwebrx-spectrum] Spectrum thread initialized successfully. [openwebrx-dsp-plugin:csdr] Command = sleep 1; ncat -v 127.0.0.1 4951 | csdr convert_u8_f | csdr fft_cc 4096 227555 | csdr logpower_cf -70 | csdr fft_exchange_sides_ff 4096 | csdr compress_fft_adpcm_f_u8 4096 [openwebrx-main] Starting HTTP server. [openwebrx-spectrum] Spectrum thread started. Ncat: Version 6.00 ( http://nmap.org/ncat ) Ncat: Connected to 127.0.0.1:4951. `

[ha7ilm]

Hi Mauro!

Thanks for the report. Which browser do you use?

If you're using Google Chrome, could you open up the Developer Console (Ctrl+Shift+J) on the OpenWebRX page, and also post here any errors (in red) you see, if there are any?

73!

Andras, HA7ILM

[ha7ilm]

Well, are you trying to open the page with the built-in browser on Raspbian Jessie, or with Google Chrome from another computer?

[Mauro-go]

Hello, I always felt remotely, both firefox and chrome on Windows 10 and does not work. Now I tried with firefox and windows xp and everything works properly.

[Mauro-go]

These are errors with chrome and windows 10

audio_calculate_resampling() :: 16, 12000 sdr.js:140 Cannot enlarge memory arrays in asm.js. Either (1) compile with -s TOTAL_MEMORY=X with X higher than the current value 16777216, or (2) set Module.TOTAL_MEMORY before the program runs. sdr.js:143 Cannot enlarge memory arrays in asm.js. Either (1) compile with -s TOTAL_MEMORY=X with X higher than the current value 16777216, or (2) set Module.TOTAL_MEMORY before the program runs

[Mauro-go]

Uncaught abort() at Error at stackTrace (http://192.168.0.72:8073/sdr.js:1141:17) at abort (http://192.168.0.72:8073/sdr.js:11365:27) at enlargeMemory (http://192.168.0.72:8073/sdr.js:1166:5) at Function.Runtime.dynamicAlloc as alloc at _sbrk (http://192.168.0.72:8073/sdr.js:5635:26) at Object.bc as _malloc at Object.asm$.malloc (http://192.168.0.72:8073/sdr.js:11407:26) at new sdrjs.RationalResamplerFF (http://192.168.0.72:8073/sdr.js:11579:31) at audio_preinit (http://192.168.0.72:8073/openwebrx.js:1447:20) at WebSocket.on_ws_recv (http://192.168.0.72:8073/openwebrx.js:1070:7)abort @ sdr.js:11365enlargeMemory @ sdr.js:1166Runtime.dynamicAlloc @ sdr.js:564_sbrk @ sdr.js:5635bc @ sdr.js:9543asm$.malloc @ sdr.js:11407sdrjs.RationalResamplerFF @ sdr.js:11579audio_preinit @ openwebrx.js:1447on_ws_recv @ openwebrx.js:1070

[ha7ilm]

Thanks! These help much.

[on6zg]

I believe this issue is still there ? I can't get any audio from any of the RTL-SDR receivers on the website. The kiwisdr ones are working perfectly

regards Jan

[ha7ilm]

I think it only happens if the default sampling rate of your audio device is 192 ksps or higher (12000*16). It will be fixed anyway. I think recompiling sdr.js with emcc -s TOTAL_MEMORY=33554432 would fix it.

[ha7ilm]

It should be fixed now, at commit: 62f49cbf4c066cd792b77307b63ca0c542e0a92c