OK to summarize much experimentation:
I think I'm using:
STREAMTUNER2------->ALSA------->ARECORD------->ALSAMIXER------->KMIX------->WAVEINPUT------->SBS------->SB
+ There is interaction between* Alsamixer* and* Kmix*. Apparently the
latter is the overall control on the system. Thus there seems little
purpose in using *Alsamixer *at all. The remainder of comments are from
*KMix.*
+ *arecord* gives
* andy@P1630:/Desktop> arecord -D default -V stereo -f cd -t wav
record.wav
Recording WAVE 'record.wav' : Signed 16 bit Little Endian, Rate 44100
Hz, Stereo
+00%|00%+
overrun!!! (at least -210099545.841 ms long)
+00%|00%+
overrun!!! (at least -210099545.845 ms long)
+00%|00%+
overrun!!! (at least -210099545.846 ms long)
record.wav* grows to 40+MB but has no sound.
Experimenting with mixer settings:
+ The overall levels are controlled by *Master* and *PCM* (both set at
100%)
+ The stream to *WaveInput* is controlled with *Capture* and *Digital*.
Setting *Digital* above 50% results in the hum.
+ There is a huge latency issue. It takes a stream over seven minutes
to achieve 100% buffering.
+ Most critical: sound is getting to the *Capture* channel only as it
is recorded from the PC Speakers by the PC microphone! If you mute the
speakers the music stops but you still hear room noise (conversation,
keyboard, barking dog, etc.!
+ Turning down *Front Mic Boost *and *Front Mic Boost (Capture) *has no
effect on the microphone!
So I need to figure out how to:
1. Reduce the buffering latency to something much more acceptable.
2. Get the audio stream directly to the *Capture *channel. Clicking
record on *streamtuner2 *does not stick. The checkbox on *Capture *on
KMix has been ticked. This presumably would be by invoking *arecord*
but I haven't cracked that yet.
Have a great weekend!
Cheers, Andy
--
alavarre1
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