Return-Path: MIME-Version: 1.0 In-Reply-To: References: From: Juha Kuikka Date: Wed, 8 Mar 2017 21:34:34 -0800 Message-ID: Subject: Re: mSBC codec issue on a headset To: =?UTF-8?B?RnLDqWTDqXJpYyBEYWxsZWF1?= Cc: linux-bluetooth Content-Type: text/plain; charset=UTF-8 Sender: linux-bluetooth-owner@vger.kernel.org List-ID: On Wed, Mar 8, 2017 at 4:48 PM, Juha Kuikka wrote: > On Wed, Mar 8, 2017 at 11:21 AM, Fr=C3=A9d=C3=A9ric Dalleau > wrote: >> Hi Juha, >> >>> My problem is that the Jabra headset starts adding noise to the audio >>> output after a period, while the LG headset works a-ok for prolonged >>> periods of time. >>> >>> My test is about 13s long wave file that is being looped. On Jabra the >>> noise always starts at about 25s (could be right at the edge of the >>> loop, hard to tell) and never goes away. >> >> >> Some kind of description of the noise you hear could help. > > Certainly. I have been trying to record them off the headset but it is > proving to be surprisingly difficult. > > Best way to describe it is as "sizzling", like fat in a pan. > >> If it looks like (hear like) small gaps are inserted between packets, th= is >> could indicates timing issues ? If it hear like the audio data are wrong= , >> this could indicate codec issues. > > I am trying to ascertain which one it is. I certainly have timing > issues also, they come across as clearer clicks and pops, as I would > expect, the sizzle is constant. > > The clicks and pops I can also hear on the LG headset. > > I will try to record it, just seeing the signal should give a good > idea whether they are frame gaps or something else. > > Thanks for your comments! I managed to make a recording of the issue. Don't mind the huge amount of office back noise in there. Original: https://goo.gl/XQK3IL Looping with issue: https://goo.gl/fBQo5I The "sizzle" starts at about 25s Thanks, - Juha