[AudioI] "Tck" sound between tracks

Fri Feb 16 16:41:45 UTC 2024

Not to "jack" this thread... but wanted to share my experience:
I have the Stereo Card (the one with the 2 pairs of RCAs as well as input
and output volume knobs.  I'm also using LMS server and Squeezelite as the
streamer.   When I begin an audio track I also get a "Tck" upon starting
playback.  It's not signifcantly loud unless I already have the amp turned
up that it's playing into.  Could the "Tck" be coming from Squeezelite?
The reason I ask is I notice when I "turn on" the Squeezelite device from
LMS I get a similar "Tck" that happens after I start playback.  I've also
noticed a particular "bug" with Squeezelite that I don't notice on other
streamers I use which is that after about 2-3 hours of continuous playback
(I need to test the actual time it takes) the audio becomes very garbled.
I simply stop or pause playback and resume and the problem resolves until
another 2-3 hours goes by.

Willing to help test if I can.

Michael

On Fri, Feb 16, 2024 at 6:54 AM Iain Mott via People <
people at lists.audioinjector.net> wrote:

> Whatever components you have in there, it's sounding fabulous.
>
> When I changed the Injector card, I also upgraded all the cabling of my
> stereo (nothing silly but good 100% copper, O2-free cables), bi-amped
> the speakers, shifted from Tidal streaming to Qobuz and rearranged the
> speakers in the room. So the improvement from all of these things has
> been significant, and it's very hard to tell what's doing what. Some
> time in the future though, I'll do a side-by-side comparison with the
> Stereo card. It'll be interesting to compare the two.
>
> Cheers and thanks,
>
> Iain
>
>
>
>
> Em 16/02/2024 06:46, Matt Flax escreveu:
> > Nice !
> >
> > What do you think of the sound quality from the Japan Radio opamps ?
> >
> > Matt
> >
> > On 16/2/24 19:08, mott wrote:
> >> OS is Raspbian 11 - Bullseye. Streaning is done by the Logitech Media
> >> Server (LMS) using the Qobuz plugin, among others. The player, which
> >> is streamed to by LMS and is configured to use the audioinjector, is
> >> Squeezelite.
> >>
> >>
> >>
> >>
> >>
> >> Enviado do meu Galaxy
> >>
> >>
> >> -------- Mensagem original --------
> >> De : Matt Flax <matt at audioinjector.net>
> >> Data: 15/02/2024 20:52 (GMT-03:00)
> >> Para: mott <mott at escuta.org>, people at lists.audioinjector.net
> >> Assunto: Re: [AudioI] "Tck" sound between tracks
> >>
> >> out of interest, What operating system / software are you running ?
> >>
> >> On 16/2/24 10:32, mott wrote:
> >>> With the auto-mute disabled in alsa-mixer, and when I play an album in
> >>> Qobuz, there seems to be a relay tck only at the beginning of the
> >>> album, but not between tracks. I don't know if that makes sense but
> >>> it's what I'm hearing now. It's also fine by me. There are no problems
> >>> with this setting when the Pi is rebooted or when the LMS "player" is
> >>> reset. Just the click of the relay, and yes, a quiet pop in the
> >> speakers.
> >>> Thanks,
> >>>
> >>> Iain
> >>>
> >>>
> >>> Enviado do meu Galaxy
> >>>
> >>>
> >>> -------- Mensagem original --------
> >>> De : Iain Mott via People <people at lists.audioinjector.net>
> >>> Data: 15/02/2024 06:30 (GMT-03:00)
> >>> Para: Matt Flax <matt at audioinjector.net>,
> people at lists.audioinjector.net
> >>> Assunto: Re: [AudioI] "Tck" sound between tracks
> >>>
> >>> My apologies. Yesterday, I had ssh'd to the wrong Raspberry Pi, so I
> was
> >>> actually looking at the audio-injector stereo card on a different
> device
> >>> and not the Pro/XLR. It's too early in the morning to test, but if
> >>> auto-mute is disabled in alsamixer, does this mean that the start up
> >>> noise you mention will be heard as the driver is loaded?
> >>>
> >>> The pop in the signal is not loud. It's less loud than the relay "tck",
> >>> but it's audible. I actually purchased the RCA pre in addition to the
> >>> XLR pre and will use the former with my stereo system (will use the XLR
> >>> board for other things), however the RCA board is stuck in customs and
> >>> that's why I'm using the XLR. There are no devices attached to the XLR
> >>> board's inputs. I can't see a way to mute the inputs in alsamixer. The
> >>> master control seems to be shared by playback and capture.
> >>>
> >>> Iain
> >>>
> >>>
> >>>
> >>> Em 14/02/2024 21:47, Matt Flax escreveu:
> >>>> Referring to the ALSA SoC driver for the Pro and Isolated Audio
> >> Injector
> >>>> soundcards :
> >>>>
> >>
> https://github.com/raspberrypi/linux/blob/rpi-6.1.y/sound/soc/bcm/audioinjector-isolated-soundcard.c#L57-L75
> >>>> The mute relay is operated as part of the _trigger ALSA function
> >> calls.
> >>>> it is possible to find a better place to put them. Perhaps
> >>> digital_mute ?
> >>>> That would require some experimentation.
> >>>>
> >>>> What is absolutely fundamentally important is that the mute relay
> >>>> remains off, while the dirver loads - otherwise there is spurious
> >>>> startup noise which can be absolutely terrible.
> >>>>
> >>>> About pops and clicks ...
> >>>>
> >>>> In the XLR preamplifier hardware there are no AC coupling caps. This
> >>>> means that any DC voltage on the input from any of your sources
> >> can make
> >>>> their way through the system to the output.
> >>>>
> >>>> Out of interest, how loud is the pop or click on playback start ?
> >>>>
> >>>> Matt
> >>>>
> >>>> On 15/2/24 01:16, Iain Mott via People wrote:
> >>>>> There doesn't seem to be an option to disable auto-mute in alsamixer,
> >>>>> unfortunately. A box would be to reduce the noise made by the relay
> >>>>> itself (acoustic noise), not the noise in the speakers.
> >>>>>
> >>>>> Iain
> >>>>>
> >>>>> Em 14/02/2024 08:41, jr52884--- via People escreveu:
> >>>>>> Matt,
> >>>>>>
> >>>>>> Isn't there an option to disable that in alsamixer? I don't
> >> remember.
> >>>>>> I don't have one in use to check.
> >>>>>>
> >>>>>> Iain,
> >>>>>>
> >>>>>> I doubt putting it in an enclosure would help as the relay transient
> >>>>>> is present on your audio line. There may be an option to disable the
> >>>>>> auto mute in alsamixer, but I don't remember.
> >>>>>>
> >>>>>> Jonathan
> >>>>>>
> >>>>>> On Tuesday, February 13, 2024 at 03:52:40 PM EST, mott via People
> >>>>>> <people at lists.audioinjector.net> wrote:
> >>>>>>
> >>>>>>
> >>>>>> Ah, so it is. But there is also a transient heard in the speakers.
> >>>>>> Not so loud and more of a pop sound. I'll look into boxing the
> >>>>>> pi/audio injector to reduce the relay noise.
> >>>>>>
> >>>>>> Iain
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> Enviado do meu Galaxy
> >>>>>>
> >>>>>>
> >>>>>> -------- Mensagem original --------
> >>>>>> De : mott via People <people at lists.audioinjector.net>
> >>>>>> Data: 13/02/2024 16:54 (GMT-03:00)
> >>>>>> Para: people at lists.audioinjector.net
> >>>>>> Assunto: [AudioI] "Tck" sound between tracks
> >>>>>>
> >>>>>>
> >>>>>> Hi,
> >>>>>>
> >>>>>> I've been using the Pro card with the XLR preamp on a Pi 3b to
> >> listen
> >>>>>> to Qobuz and Tidal streaming services by way of the Logitech Media
> >>>>>> Server (LMS) running on the same computer. My system has never
> >>>>>> sounded better. There's a quiet but noticeable "tck" sound, however,
> >>>>>> when a track starts,  when "stop" is pressed on the LMS
> >> interface and
> >>>>>> sometimes two tcks are sounded between tracks.
> >>>>>>
> >>>>>> It's not a big problem, but I thought I'd mention it. It never
> >>>>>> happened with the old audio injector stereo card. I've tested the
> >>>>>> streaming with LMS's standard web interface and also with an Android
> >>>>>> app called Squeezer.
> >>>>>>
> >>>>>> Cheers,
> >>>>>>
> >>>>>> Iain
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> Enviado do meu Galaxy
> >>>>>>
> >>>>>>
> >>>>>> --
> >>>>>> People mailing list
> >>>>>> People at lists.audioinjector.net
> >>>>>> https://lists.audioinjector.net/mailman/listinfo/people
> >>>>>>
> >>>>> --
> >>>>> _______
> >>>>> Iain Mott
> >>>>> https://escuta.org
> >>>>>
> >>> --
> >>> _______
> >>> Iain Mott
> >>> https://escuta.org
> >>>
> >>>
> >>> --
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> >>> https://lists.audioinjector.net/mailman/listinfo/people
> >> --
> >> Checkout the community email list :
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> >>
> >>
> --
> _______
> Iain Mott
> https://escuta.org
>
>
> --
> People mailing list
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> https://lists.audioinjector.net/mailman/listinfo/people
>
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