Microphone recording static plus sound
by aikempshall from LinuxQuestions.org on (#51CG6)
I have an ASUS Z87-K motherboard with built-in soundcard - about 5 years old. The audio is a Realtec ALC887 8-channel High Definition Audio CODEC.
I think the sound element of the motherboard has or is about to die.
With a microphone plugged in and when recording voice I get a lot of static plus the voice. I'm using audacity.
If I unplug the microphone and record again I get a lot of static, though not as much as with the microphone plugged in.
I suspect a faulty component, maybe a capacitor. Maybe it's interference from the fans. It's all guesswork.
I get the same symptoms with arecord / aplay
Code:$ arecord -f dat -d 10 -r 48000 test.wav
Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
$ aplay test.wav
Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
I'm using slackware 14.2 with pulse. I've tried two different models of microphones. The microphones are ancient. 20+ years old.
I've added
Quote:
to /etc/pulse/default.pa
I have no problems with playback from the internet -or watching videos. To my ears the sound is good quality.
lspci
gives
Quote:
arecord -l
gives
Quote:
Should the next stage be buying a suitably priced sound card? I'm not currently using any of the expansion slots. So I should have available various versions of pcie slots.
Alex
I think the sound element of the motherboard has or is about to die.
With a microphone plugged in and when recording voice I get a lot of static plus the voice. I'm using audacity.
If I unplug the microphone and record again I get a lot of static, though not as much as with the microphone plugged in.
I suspect a faulty component, maybe a capacitor. Maybe it's interference from the fans. It's all guesswork.
I get the same symptoms with arecord / aplay
Code:$ arecord -f dat -d 10 -r 48000 test.wav
Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
$ aplay test.wav
Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
I'm using slackware 14.2 with pulse. I've tried two different models of microphones. The microphones are ancient. 20+ years old.
I've added
Quote:
| load-module module-echo-cancel |
I have no problems with playback from the internet -or watching videos. To my ears the sound is good quality.
lspci
gives
Quote:
| 00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06) 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06) 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06) 00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06) 00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05) 00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5) 00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5) 00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation Z87 Express LPC Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05) 00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05) 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 11) |
gives
Quote:
| **** List of CAPTURE Hardware Devices **** card 1: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 1: PCH [HDA Intel PCH], device 2: ALC887-VD Alt Analog [ALC887-VD Alt Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 |
Should the next stage be buying a suitably priced sound card? I'm not currently using any of the expansion slots. So I should have available various versions of pcie slots.
Alex