Sound is in mono and 1 speaker

hello everyone, I did an interview today and used a wireless mic with my sony pd170 video camera, when I logged in my footage it only played out of 1 speaker, is there a way to duplicate just the sound and put it on a new track so it will play out of both speakers? I'm using fcp 4.5 hd, thanks for your help

You probably captured the audio as stereo instead of mono. Since the PD170 records two mono channels, if you capture in stereo the audio source that was connected to channel 1 on the camera will be heard from the left speaker and any audio source connected to channel 2 of the camera will be heard from the right speaker (which is why you should capture in mono).
If you do have a Stereo Pair in the Timeline, highlight it and hit Option L to make them non-stereo then as Randy suggested, pan the clip to 0 to get mono (sound coming from both speakers equally).
-DH

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[SOLVED]no sound in both headphone and speaker after update (alsa)

No sound after update. But, I can hear sound in headphone after install pulseaudio, while there is no sound in speaker (after plugging out headphone). I have tried some methods in related wiki articles, such as alsa and pulseaudio, but not works.
My enviroment is arch64, kde. I have installed lib32-alsa-plugins lib32-libpulse lib32-openal.
Anything others I can do? Thanks for advance.
Here is the output:
xym@Arch ~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
xym@Arch ~ $ lsmod | grep '^snd' | column -t
snd_hda_codec_hdmi 30162 1
snd_hda_codec_realtek 41295 1
snd_hda_intel 37000 3
snd_hda_codec 150305 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep 6340 1 snd_hda_codec
snd_pcm 77645 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
snd_page_alloc 7242 2 snd_pcm,snd_hda_intel
snd_timer 18726 1 snd_pcm
snd 59109 13 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_hda_codec,snd_hda_intel
xym@Arch ~ $ ls -l /dev/snd
total 0
drwxr-xr-x 2 root root 60 Jan 15 11:09 by-path
crw-rw----+ 1 root audio 116, 7 Jan 15 11:09 controlC0
crw-rw----+ 1 root audio 116, 6 Jan 15 11:09 hwC0D0
crw-rw----+ 1 root audio 116, 5 Jan 15 11:09 hwC0D3
crw-rw----+ 1 root audio 116, 4 Jan 15 12:17 pcmC0D0c
crw-rw----+ 1 root audio 116, 3 Jan 15 12:17 pcmC0D0p
crw-rw----+ 1 root audio 116, 2 Jan 15 12:17 pcmC0D3p
crw-rw---- 1 root audio 116, 1 Jan 15 11:09 seq
crw-rw----+ 1 root audio 116, 33 Jan 15 11:09 timer
amixer
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback 0 - 64
Mono: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'Headphone',0
Capabilities: pvolume pswitchs
Playback channels: Front Left - Front Rightss
Limits: Playback 0 - 64s
Mono:
Front Left: Playback 64 [100%] [0.00dB] [off]
Front Right: Playback 64 [100%] [0.00dB] [off]
Simple mixer control 'Speaker',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 64
Mono:
Front Left: Playback 64 [100%] [0.00dB] [off]
Front Right: Playback 64 [100%] [0.00dB] [off]
Simple mixer control 'PCM',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 255
Mono:
Front Left: Playback 255 [100%] [0.00dB]
Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Mic',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 31 [100%] [12.00dB] [on]
Front Right: Playback 31 [100%] [12.00dB] [on]
Simple mixer control 'Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%] [0.00dB]
Front Right: 0 [0%] [0.00dB]
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Beep',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 0 [0%] [-34.50dB] [on]
Front Right: Playback 0 [0%] [-34.50dB] [on]
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch
Capture channels: Front Left - Front Right
Limits: Capture 0 - 31
Front Left: Capture 31 [100%] [33.00dB] [on]
Front Right: Capture 31 [100%] [33.00dB] [on]
Simple mixer control 'Auto-Mute Mode',0
Capabilities: enum
Items: 'Disabled' 'Enabled'
Item0: 'Disabled'
Simple mixer control 'Digital',0
Capabilities: cvolume
Capture channels: Front Left - Front Right
Limits: Capture 0 - 120
Front Left: Capture 60 [50%] [0.00dB]
Front Right: Capture 60 [50%] [0.00dB]
Simple mixer control 'Internal Mic',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 31 [100%] [12.00dB] [off]
Front Right: Playback 31 [100%] [12.00dB] [off]
Simple mixer control 'Internal Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 2 [67%] [20.00dB]
Front Right: 2 [67%] [20.00dB]
xym@Arch ~ $ speaker-test -c 2
speaker-test 1.0.27.2
Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 2048 to 16384
Period size range from 1024 to 1024
Using max buffer size 16384
Periods = 4
was set period_size = 1024
was set buffer_size = 16384
0 - Front Left
1 - Front Right
Time per period = 5.651882
0 - Front Left
1 - Front Right
Time per period = 5.973485
0 - Front Left
I can't hear any sound during this test.
/etc/modprobe.d/modprobe.conf
blacklist snd_intel8x0m
Last edited by XuYimin (2014-01-16 12:18:02)

straykat wrote:
XuYimin, can you please give more info on what you mean by "update (alsa)"? There is no "alsa" package in Arch as alsa & it's modules are part of the (linux) kernel.
As you have already gone into alsamixer to ensure the appropriate channels are unmuted & set at the desired level, have you also gone into your KDE systems settings -> Multimedia -> Audio and Video Settings & rechecked your settings?
sorry，it's really misleading in my words.what i want to say is 'no sound after update, and the sound system is alsa.'
i'm sure the approiate channels are unmuted. in the Video Setting, I tested all sound cards in the list, But i can't hear sound.

C1-02 Sound heard from Earpiece and Speaker both e...

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Resolution
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Sound is in mono and 1 speaker

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