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Beteiligte Sender:
Audio
Platform is openwrt on linkit 7688 and a cheap usb audio card
Links:
trace
installed packages so far
kmod-usb-audio
kmod-sound-core
ffmpeg
sox
mpd
comands
streaming audio into headphones
arecord -D hw:1,0 -c 2 -f dat | aplay -D hw:1,0 -c 2 -f dat
stream with ffmpeg to rtp:
ffmpeg -t 5 -f alsa -ac 2 -ar 44100 -i hw:1 -ac 2 -f rtp rtp://localhost:1234
ffmpeg -t 5 -f alsa -ac 2 -ar 44100 -i hw:1 -acodec vorbis -strict -2 -ac 2 -f rtp rtp://localhost:1234
I think at least one of the LinkIt devices (LinkIt Smart 7688 vs. LinkIt Smart 7688 Duo) supports the digital I2S interface. Would this be an option also?
i have no microphone for that.
and on the other hand it seems to be a bit slow. i will try the NanoPi neo for now
weef
June 3, 2017, 2:28pm
4
Wir haben den Duo, da haben sie leider den I2S des MT7688 für die Verbindung zum AVR genommen, siehe:
LinkIt Smart 7688 Duo
The Smart Duo combinates a MIPS MPU with an Atmel MCU. Is has WiFi on board and is able to host USB. There are targets for OpenWRT/LEDE and it comes preinstalled with such. You can run Python and Node.js on this device.
The LinkIt Smart 7688 Duo (a compact controller board) is an open development board based on the MT7688 (datasheet ) and the ATmega32u4. The board is compatible with Arduino Yun sketches and is based on the OpenWrt Linux distribution. As it is compatible wi…
Hier findet sich noch eine kleine Bibliothek, die ALSA komfortabel abstrahiert:
Entdeckt über:
linux, audio, alsa
Mit Python kann man u.U. auch direkt und komfortabler aufnehmen, siehe: