[mythtv-users] Strange Audio Behavior - Static in One Speaker
I've been searching the lists for the last few days trying to find out what I may have done wrong to cause the behavior that I'm experiencing with no luck so I finally decided to ask for help here. Everything is working very well and my system is stable. I can watch TV using the TV Viewer in Redhat FC4 and if I un-mute the line in, audio is flawless. Sound/music also plays flawlessly. So, I have the patch cable from the Hauppauge WinTV Go Plus to the line in of my Diamond Monster Sound audio card. When I run MythTV and select Watch TV, it fires up fine. However, only the right speaker has audio. The left speaker starts having a tiny amount of static. This static then starts getting louder about every second preceded by a small pop sound. Each time, it's as if the volume of the static is doubled until it becomes so loud it just distorts horribly. If I use kmix and slide the balance all the way to the right speaker, I still hear the audio from the TV card fine. If I slide it all the way to the left, it's pure static. Does anyone have ANY suggestions whatsoever? I'm including potential hardware info at the end of this message and if I've forgotten anything, or can include additional information, please let me know. I'm dying to have this working, it's such a sweet application! Thanks in advance for any insight! System Summary: AMD Athlon 1800Mhz, Riva TNT2, Diamond Monster Sound (Aureal Vortex 2 -- module: snd-au8830). [EMAIL PROTECTED] ~]# lspci -v 00:00.0 Host bridge: VIA Technologies, Inc. VT8378 [KM400/A] Chipset Host Bridge Subsystem: VIA Technologies, Inc. VT8378 [KM400/A] Chipset Host Bridge Flags: bus master, 66Mhz, medium devsel, latency 8 Memory at d000 (32-bit, prefetchable) [size=128M] Capabilities: [80] AGP version 3.5 Capabilities: [c0] Power Management version 2 00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge (prog-if 00 [Normal decode]) Flags: bus master, 66Mhz, medium devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 Memory behind bridge: da00-dbff Prefetchable memory behind bridge: d800-d9ff Capabilities: [80] Power Management version 2 00:08.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11) Subsystem: Hauppauge computer works Inc. WinTV Series Flags: bus master, medium devsel, latency 32, IRQ 11 Memory at dc044000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 00:08.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11) Subsystem: Hauppauge computer works Inc. WinTV Series Flags: bus master, medium devsel, latency 32, IRQ 11 Memory at dc045000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 00:09.0 Multimedia audio controller: Aureal Semiconductor Vortex 2 (rev fe) Subsystem: Diamond Multimedia Systems Monster Sound II Flags: bus master, medium devsel, latency 32, IRQ 5 Memory at dc00 (32-bit, non-prefetchable) [size=256K] I/O ports at c000 [size=8] I/O ports at c400 [size=8] Capabilities: [dc] Power Management version 1 00:0a.0 Ethernet controller: Linksys Gigabit Network Adapter (rev 12) Subsystem: Linksys EG1032 v2 Instant Gigabit Network Adapter Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 12 Memory at dc04 (32-bit, non-prefetchable) [size=16K] I/O ports at c800 [size=256] Capabilities: [48] Power Management version 2 Capabilities: [50] Vital Product Data 00:0f.0 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP]) Subsystem: VIA Technologies, Inc. VT82C586/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE Flags: bus master, medium devsel, latency 32 I/O ports at cc00 [size=16] Capabilities: [c0] Power Management version 2 00:10.0 USB Controller: VIA Technologies, Inc. VT82x UHCI USB 1.1 Controller (rev 81) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. VT82x UHCI USB 1.1 Controller Flags: bus master, medium devsel, latency 32, IRQ 11 I/O ports at d000 [size=32] Capabilities: [80] Power Management version 2 00:10.1 USB Controller: VIA Technologies, Inc. VT82x UHCI USB 1.1 Controller (rev 81) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. VT82x UHCI USB 1.1 Controller Flags: bus master, medium devsel, latency 32, IRQ 11 I/O ports at d400 [size=32] Capabilities: [80] Power Management version 2 00:10.2 USB Controller: VIA Technologies, Inc. VT82x UHCI USB 1.1 Controller (rev 81) (prog-if 00 [UHCI])
Re: [mythtv-users] Strange Audio Behavior - Static in One Speaker
On Sunday 22 January 2006 17:13, Dave Bixler wrote: I've been searching the lists for the last few days trying to find out what I may have done wrong to cause the behavior that I'm experiencing with no luck so I finally decided to ask for help here. Everything is working very well and my system is stable. I can watch TV using the TV Viewer in Redhat FC4 and if I un-mute the line in, audio is flawless. Sound/music also plays flawlessly. So, I have the patch cable from the Hauppauge WinTV Go Plus to the line in of my Diamond Monster Sound audio card. When I run MythTV and select Watch TV, it fires up fine. However, only the right speaker has audio. The left speaker starts having a tiny amount of static. This static then starts getting louder about every second preceded by a small pop sound. Each time, it's as if the volume of the static is doubled until it becomes so loud it just distorts horribly. If I use kmix and slide the balance all the way to the right speaker, I still hear the audio from the TV card fine. If I slide it all the way to the left, it's pure static. Does anyone have ANY suggestions whatsoever? I'm including potential hardware info at the end of this message and if I've forgotten anything, or can include additional information, please let me know. I'm dying to have this working, it's such a sweet application! Thanks in advance for any insight! I think I have a very similar problem to yours except that I have TV audio on the left hand side. I'm still testing my problem and trying to find a solution. My findings so far: - if I unmute line in, audio is perfect with tvtime - if I mute line in, I get sound from the left speaker in myth. However, sound from the right speaker is not simply static, it is recording form the mic! Yes, that's what is happening: left input is line-in, right input is from the mic at the same time! Please check if this is your case, too. I have two mic plugs, one in the front, one on the rear side of the machine, so if you happen to have a similar PC, you might need to also select the correct mic in kmix to check this. - I can reproduce the pop sound getting louder, can't remember which setting influences this in kmix, but by playing around with controls I could easily get rid of this problem. I cannot check this right now, as a longer recording is in progress on my box. - the problem does not seem to be related to myth however: if I eg. record sound from line in with krecord, the same thing happens: the left side is recording from the line input, the right side from the mic. I suspect the problem is that the sound driver is incompatible with the mixer circuit in the integrated sound card. My motherboard is an ASUS A7N8X-X (nforce2 chipset). Recording works perfectly under Windows, at least. I have no idea where to go next, already tried google, without success. But I'm not an expert in Linux... Tom ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Strange Audio Behavior - Static in One Speaker
Tom Burt wrote: On Sunday 22 January 2006 17:13, Dave Bixler wrote: I've been searching the lists for the last few days trying to find out what I may have done wrong to cause the behavior that I'm experiencing with no luck so I finally decided to ask for help here. Everything is working very well and my system is stable. I can watch TV using the TV Viewer in Redhat FC4 and if I un-mute the line in, audio is flawless. Sound/music also plays flawlessly. So, I have the patch cable from the Hauppauge WinTV Go Plus to the line in of my Diamond Monster Sound audio card. When I run MythTV and select Watch TV, it fires up fine. However, only the right speaker has audio. The left speaker starts having a tiny amount of static. This static then starts getting louder about every second preceded by a small "pop" sound. Each time, it's as if the volume of the static is doubled until it becomes so loud it just distorts horribly. If I use kmix and slide the balance all the way to the right speaker, I still hear the audio from the TV card fine. If I slide it all the way to the left, it's pure static. Does anyone have ANY suggestions whatsoever? I'm including potential hardware info at the end of this message and if I've forgotten anything, or can include additional information, please let me know. I'm dying to have this working, it's such a sweet application! Thanks in advance for any insight! I think I have a very similar problem to yours except that I have TV audio on the left hand side. I'm still testing my problem and trying to find a solution. My findings so far: - if I unmute line in, audio is perfect with tvtime - if I mute line in, I get sound from the left speaker in myth. However, sound from the right speaker is not simply static, it is recording form the mic! Yes, that's what is happening: left input is line-in, right input is from the mic at the same time! Please check if this is your case, too. I have two mic plugs, one in the front, one on the rear side of the machine, so if you happen to have a similar PC, you might need to also select the correct mic in kmix to check this. - I can reproduce the "pop" sound getting louder, can't remember which setting influences this in kmix, but by playing around with controls I could easily get rid of this problem. I cannot check this right now, as a longer recording is in progress on my box. - the problem does not seem to be related to myth however: if I eg. record sound from line in with krecord, the same thing happens: the left side is recording from the line input, the right side from the mic. I suspect the problem is that the sound driver is incompatible with the mixer circuit in the integrated sound card. My motherboard is an ASUS A7N8X-X (nforce2 chipset). Recording works perfectly under Windows, at least. I have no idea where to go next, already tried google, without success. But I'm not an expert in Linux... Tom ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users Thanks for the feedback. I tried what you suggested, but the mic does not seem to be on the other channel. Granted, this card has several inputs on the board itself, so it's completely possible that one of those are being used. I tried changing the settings from mic1 to mic2 in kmix but it didn't seem to matter. I do think that what you've said about our problems possibly being the same is correct. Another thing that I tried was enabling the microphone as record. I fired up MythTV and then spoke into the mic. What came out of the left channel was my voice, but then the right channel (again) started to degrade. However, what I noticed was that my voice was echoed into that channel as well as the static, like a feedback loop. --Dave ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
