Hi,
I have been converting cassette tape tracks to .wav files using 'arecord'
(so I can transfer them to CD).
I have Alsa-0.5.12a and an sblive emu10k1 card.
I find that the resulting .wav files will only play back through one
speaker, using aplay.
I am sure the connections are ok 'cos I hear both speakers though the
pc while recording.
I normally use eg: 'arecord -c 0 -d 0 -w -m audio_08.wav' but have tried
-d 1 and -S without success.
When I make .wav files from a cd using cdda2wav the files produced will
playback, with aplay, without problem so the problem would appear to be
one of capture.
Please, what am I doing wrong? How can I record stereo from a cassette to
a .wav file?
Some info which may help follows.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
In alsamixer I find that this mono recording takes place if I set any of
the columns 'master', 'master mono' or 'line' to capture L-R . Any other
column set to capture fails to produce a playable .wav file.
Using F2 in alsamixer gives the following /proc info:-
/proc/asound/version:
====================
Advanced Linux Sound Architecture Driver Version 0.5.12a.
Compiled on Jun 25 2002 for kernel 2.4.10 with versioned
symbols.
pages : 172032 bytes (42 pages)
kmalloc: 25470 bytes
vmalloc: 4096 bytes
/proc/asound/cards:
===================
0 [sblive ]: EMU10K1 - Sound Blaster Live!
Sound Blaster Live! at 0xe800, irq 12
/proc/asound/devices:
=====================
0: [0] : control
6: [0- 0]: mixer
8: [0- 0]: raw midi
16: [0- 0]: digital audio playback
24: [0- 0]: digital audio capture
25: [0- 1]: digital audio capture
26: [0- 2]: digital audio capture
33: : timer
/proc/asound/oss-devices: #
=========================
0: [0- 0]: mixer
2: [0- 2]: raw midi
3: [0- 3]: digital audio
4: [0- 4]: digital audio
5: [0- 5]: digital audio
9: [0- 9]: raw midi
12: [0-12]: digital audio
/proc/asound/timers:
====================
G0: system timer : 10000.0us (10000000 ticks)
/proc/asound/pcm:
=================
00-00: emu10k1 : EMU10K1 : playback 32 : capture 1
00-01: emu10k1 mic : EMU10K1 MIC : capture 1
00-02: emu10k1 efx : EMU10K1 EFX : capture 1
I would welcome an explanation of the numbers which appear in this
description and how this relates to the 'columns' which appear in
alsamixer.
My /etc/asond.conf file is:-
# ALSA driver configuration
# This configuration is generated with the alsactl program.
soundcard("sblive") {
mixer("SigmaTel STAC9721/23") {
; The type is 'bool'.
switch("AC97 Mono Output Select", false)
; The type is 'bool'.
switch("AC97 Second MIC", false)
; The type is 'bool'.
switch("ADC/DAC Loopback", false)
element("Rear Switch",0,100,Switch1(on,on))
; Voice 0 : Min 0 Max 31
; Voice 1 : Min 0 Max 31
element("Rear",0,200,Volume1(23,23))
element("Input Gain Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 15
; Voice 1 : Min 0 Max 15
element("Input Gain Volume",0,200,Volume1(11,11))
element("Master Mono Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 31
element("Master Mono Volume",0,200,Volume1(23))
element("Surround Switch",0,100,Switch1(on,on))
; Voice 0 : Min 0 Max 31
; Voice 1 : Min 0 Max 31
element("Surround Volume",0,200,Volume1(23,23))
element("Master Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 31
; Voice 1 : Min 0 Max 31
element("Master Volume",0,200,Volume1(23,23))
; The 3D effect has an on/off switch.
; Wide : Min 0 Max 3
element("Effect",0,600,_3D_Effect1(sw=off,wide=0))
element("Aux Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 31
; Voice 1 : Min 0 Max 31
element("Aux Volume",0,200,Volume1(23,23))
element("Video Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 31
; Voice 1 : Min 0 Max 31
element("Video Volume",0,200,Volume1(23,23))
element("CD Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 31
; Voice 1 : Min 0 Max 31
element("CD Volume",0,200,Volume1(23,23))
element("Line Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 31
; Voice 1 : Min 0 Max 31
element("Line Volume",0,200,Volume1(23,23))
element("MIC Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 31
element("MIC Volume",0,200,Volume1(23))
; Voice 0 : Min 0 Max 1
element("MIC Boost",0,200,Volume1(0))
element("Phone Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 31
element("Phone Volume",0,200,Volume1(23))
element("PC Speaker Switch",0,101,Switch2(off))
; Voice 0 : Min 0 Max 15
element("PC Speaker Volume",0,200,Volume1(0))
element("PCM Switch",0,101,Switch2(on))
; Voice 0 : Min 0 Max 31
; Voice 1 : Min 0 Max 31
element("PCM Volume",0,200,Volume1(23,23))
element("Mono Output MUX",0,401,Mux2(element("Mono-Out
Accumulator",0,301)))
element("Input
MUX",0,400,Mux1(element("Phone",0,0),element("Phone",0,0)))
}
pcm("EMU10K1 EFX") {
capture {
; The type is 'dword'.
; The accepted switch range is from 1 to 4294967295.
switch("EFX voices mask", 0x1001)
}
}
}
--
Thanks and Best wishes,
Howard. (Dr A.H.Gilbert, Thornaby-on-Tees,Nth Yorkshire.)
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