Bug#912824: [Pkg-alsa-devel] Bug#912824: Distorted sound with some headphones.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 No, the connection is not loose. It looks like that this issue only happens on "Apple" earphones (as well as the "Apple mode" on some earphones). There is a button on the earphone, and if I hold down the button, there is no problem playing. But I cannot hold it forever. The distortion problem is Linux-exclusive. I do not know the course. All music files have this problem but not very noticable. It becomes noticable with speech. Holding the button solves the problem. The "wrong channel" problem exists in Windows too, but not in devices such as an Android phone or a Nintendo 3DS. Again, holding the button down solves the problem. Maybe it is related to this: https://mashtips.com/apple-headphone-on-android-or-windows/ Apple has its own implementation of TRRS and I guess the button disables the mic and other "special features". So it is a hardware problem after all. But I hope you to provide some sort of software workaround. ---END OF MESSAGE--- Please reply to this e-mail with UTF8-encoded plain text. You are as malicious as any other spammer if you send HTML e-mails. -BEGIN PGP SIGNATURE- Version: ProtonMail Comment: https://protonmail.com wsBcBAEBCAAQBQJb3uvxCRDYtWA5RV10HwAAvpMIAIJ3ZecALDRou1EvfETp iPdap8DWTfJfjPso9OAEcTQom8H8uTxsFTGSV6VN5LV3Z0gQ2nrk5XkowyCT h8do4ISHR2pcMvnsSh6XTw31smIaH57sL4jIcha/Mw6lLtBJCedfL1P5vm8q Iszr0M++crl5b2ATFg2VsMRebIQvzlEBtS2P5XYyTwajd8PrA4ZiEgAGE6lH W37DjALf6NfQzJL58RNdfiWIhW0WDr3zV0mX7ca7bzJ9ymc7gURvlkx90hnk K7v6EgPl/WK5GyXOkXQg87HT1XyUhddp9K5cYXdMUx3u/ir3heZMtNpjarIi g1i28TPN2DTzAmQ1Dxiu19I= =awp7 -END PGP SIGNATURE- publickey - pthfdr@protonmail.ch - 0xAB77ABA4.asc Description: application/pgp-keys publickey - pthfdr@protonmail.ch - 0xAB77ABA4.asc.sig Description: PGP signature
Bug#912824: [Pkg-alsa-devel] Bug#912824: Distorted sound with some headphones.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 No, I am not talking about clipping. The problem happens regardless of volume. If I run "speaker-test -c2", both speakers have sound output at the same time (which should not happen). The "constantly swapping" does not always happen-it happens at random, and only on some of my audio files. I do not know what caused it. Some observations when I adjust the volume in "alsamixer" and run "speaker-test -c2" (it seems that the swapping problem does not happen): L=0, R>0: Both have constant sound on "Front Left", Both have no sound on "Front Right". (No, this is not a typo) L>0, R=0: Both have no sound on "Front Left", Both have constant sound on "Front Right". L>0, R>0, L>R: Both have constant weak sound on "Front Left", Both have constant strong sound on "Front Right". ---END OF MESSAGE--- Please reply to this e-mail with UTF8-encoded plain text. You are as malicious as any other spammer if you send HTML e-mails. -BEGIN PGP SIGNATURE- Version: ProtonMail Comment: https://protonmail.com wsBcBAEBCAAQBQJb3sgaCRDYtWA5RV10HwAAWpUIAKrzd1zNwmkdl680zuXb OtTIpBrIIoNUSzenkVVJcRFf+uWXCH4yZ/4rDwGBbDOAOfseaI8eoYzhgeHE hCfddLldkk1SFl4ojBKvnRAy4nAg06NJdtM6yWIHpwICx7pf2ojzvnIdxR9S ffWl1AqsqtvUdK9qRxiWhQdgfYLOskp7KyWsRXdR265EMDzV5NlchAoJdYfH 6IWEazg9GnnW3l+V8NNJl6m3JM/y0+0g32vFt0t3sO1DahGl4+hcfWfkwKwE BD0faaoOG6dajgHUwMr25B8JyJ5v6m7q8YRy49gQIhXa0XJ+3pnrKWgN0uHo huNQuepxAb5X2tS2kA5DJuo= =XrvL -END PGP SIGNATURE- publickey - pthfdr@protonmail.ch - 0xAB77ABA4.asc Description: application/pgp-keys publickey - pthfdr@protonmail.ch - 0xAB77ABA4.asc.sig Description: PGP signature
Bug#912824: [Pkg-alsa-devel] Bug#912824: Distorted sound with some headphones.
* Gong S. [2018-11-04 05:42 +]: > Package: alsa-utils Version: 1.1.7-1 > > With some headphones and earphones, the sound output is distorted, > e.g. the left and right channels are swapping constantly, this > issue is especially serious with human speech. I used a Sony > MDR-AS800AP earphone directly inserted to the sound card's audio > output, the sound is distorted. However, if I hold the button on > the earphone the output is normal but at a higher volume. What happens if you decrease volume by alsamixer? > I can confirm that the earphone and the sound card have no problem > because it plays normally on an Android smartphone or on > dual-booted Windows. The problem is certainly in ALSA. I also > tested with other earphones, some of them have similar problems. > Some earphones have an "Android/Apple" switch, and the distortion > happens when the switch is set to "Apple". I am using ALSA > directly without PulseAudio or other Poetterware. Are you sure? Distortion happens when the volume is increased to more that 100% in i.e. pavucontrol. > > The configuration can be found in the attachment. Thanks for reporting Elimar -- Numeric stability is probably not all that important when you're guessing;-) signature.asc Description: PGP signature
