Mailing List Archive

AndroidTV and leanfront: occasional 'ear-protection' limit
I've come across a minor playback quirk with leanfront on my Sony
Android TV, which drives my vintage stereo system from its headphone
socket. The Android version is 11, device name BRAVIA TL and its
firmware date is now 2022 Nov 16.

Occasionally, and without any obvious cause, the sound level will drop,
and attempts to restore it display a warning about possible ear damage
before allowing a manual adjustment, via the TV remote, to near the
original level.

Apparently some Android phones can disable this limiting via a 'Sounds
and Vibration' setting, but I haven't found that on the TV. Its 'Sound'
setting shows 'HDMI sound system' and the on-screen popup display of
sound level is typically dropped from around 50% to around 10%.

I suppose the obvious remedy is to leave the TV output level low and use
more gain in the stereo system, but might there be another setting
hiding somewhere?

Apart from this, I find that playback is usually excellent - but the TV
pixel-count is lower than current norms.

John P
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Re: AndroidTV and leanfront: occasional 'ear-protection' limit [ In reply to ]
John Pilkington wrote:
> I've come across a minor playback quirk with leanfront on my Sony Android
> TV, which drives my vintage stereo system from its headphone socket. The
> Android version is 11, device name BRAVIA TL and its firmware date is now
> 2022 Nov 16.


Is it possible that the TV has a stereo pair of RCA jack outputs on the
back? If so, that would be a preferable output to your music
system, and shouldn't pass through the TV's limiter function at
all.

-dsr-
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Re: AndroidTV and leanfront: occasional 'ear-protection' limit [ In reply to ]
On 10/05/2023 19:32, Dan Ritter wrote:
> John Pilkington wrote:
>> I've come across a minor playback quirk with leanfront on my Sony Android
>> TV, which drives my vintage stereo system from its headphone socket. The
>> Android version is 11, device name BRAVIA TL and its firmware date is now
>> 2022 Nov 16.
>
>
> Is it possible that the TV has a stereo pair of RCA jack outputs on the
> back? If so, that would be a preferable output to your music
> system, and shouldn't pass through the TV's limiter function at
> all.
>
> -dsr-

Thanks for the suggestion, but I think the answer is No.

The supported Audio outputs appear to be HDMI ARC and digital optical,
both two channel linear PCM 48 kHz 16 bits, or Dolby Audio.

A footnote tells me to 'Connect your audio system to the HDMI IN 1 to
route TV audio to your audio system'. Strangely, my stereo doesn't have
an HDMI socket.

Even the headphone socket seems to be an endangered species now.
Headphones are wireless and audio systems are soundbars or other digital
exotica. I expect I shall stay with what I've got.

Cheers,

John



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Re: AndroidTV and leanfront: occasional 'ear-protection' limit [ In reply to ]
On 5/10/23 16:03, John Pilkington wrote:
> On 10/05/2023 19:32, Dan Ritter wrote:
>> John Pilkington wrote:
>>> I've come across a minor playback quirk with leanfront on my Sony
>>> Android
>>> TV, which drives my vintage stereo system from its headphone
>>> socket.   The
>>> Android version is 11, device name BRAVIA TL and its firmware date
>>> is now
>>> 2022 Nov 16.
>>
>>
>> Is it possible that the TV has a stereo pair of RCA jack outputs on the
>> back? If so, that would be a preferable output to your music
>> system, and shouldn't pass through the TV's limiter function at
>> all.
>>
>> -dsr-
>
> Thanks for the suggestion, but I think the answer is No.
>
> The supported Audio outputs appear to be HDMI ARC and digital optical,
> both two channel linear PCM 48 kHz 16 bits, or Dolby Audio.
>
> A footnote tells me to 'Connect your audio system to the HDMI IN 1 to
> route TV audio to your audio system'.  Strangely, my stereo doesn't
> have an HDMI socket.
>
> Even the headphone socket seems to be an endangered species now.
> Headphones are wireless and audio systems are soundbars or other
> digital exotica.  I expect I shall stay with what I've got.
>
> Cheers,
>
> John
>
I am confused. I thought that a Sony Android TV was a TV with android
built in. So you are driving your stereo from the TV headphone socket,
but the second and third emails say that you are not. Are you running
leanfront on the TV or on something else?

Peter

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Re: AndroidTV and leanfront: occasional 'ear-protection' limit [ In reply to ]
On 12/05/2023 14:25, Peter Bennett wrote:
>
> On 5/10/23 16:03, John Pilkington wrote:
>> On 10/05/2023 19:32, Dan Ritter wrote:
>>> John Pilkington wrote:
>>>> I've come across a minor playback quirk with leanfront on my Sony
>>>> Android
>>>> TV, which drives my vintage stereo system from its headphone
>>>> socket.   The
>>>> Android version is 11, device name BRAVIA TL and its firmware date
>>>> is now
>>>> 2022 Nov 16.
>>>
>>>
>>> Is it possible that the TV has a stereo pair of RCA jack outputs on the
>>> back? If so, that would be a preferable output to your music
>>> system, and shouldn't pass through the TV's limiter function at
>>> all.
>>>
>>> -dsr-
>>
>> Thanks for the suggestion, but I think the answer is No.
>>
>> The supported Audio outputs appear to be HDMI ARC and digital optical,
>> both two channel linear PCM 48 kHz 16 bits, or Dolby Audio.
>>
>> A footnote tells me to 'Connect your audio system to the HDMI IN 1 to
>> route TV audio to your audio system'.  Strangely, my stereo doesn't
>> have an HDMI socket.
>>
>> Even the headphone socket seems to be an endangered species now.
>> Headphones are wireless and audio systems are soundbars or other
>> digital exotica.  I expect I shall stay with what I've got.
>>
>> Cheers,
>>
>> John
>>
> I am confused. I thought that a Sony Android TV was a TV with android
> built in. So you are driving your stereo from the TV headphone socket,
> but the second and third emails say that you are not. Are you running
> leanfront on the TV or on something else?
>
> Peter
>
I'm fairly sure that the 'ear-protection' drops in volume have been
while running leanfront on the TV's hardware under its Android OS, but
the info above was copied from the TV user's manual (and I could quote
it in 18 other languages).

leanfront gets its content via ethernet, but the TV also has 3 HDMI
inputs as well as DVB and network sources. One HDMI input comes from
the nVidia card in the Myth FE/BE Fedora box and can display content
from that by mythfrontend, mpv, vlc, browsers, terminals etc.

I find it easy to choose what I'm using, but it wouldn't be a
family-friendly setup. It's even worse when feeding an HDMI input from
a FireStick, with two different remotes in action. I don't usually do
that now.

Whatever, I think the ear-protection experience is an Android OS
feature. The popup display shows a headphone symbol; it actually shows
TV-audio gain rather than absolute output level.

Sorry for the confusion.

John


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Re: AndroidTV and leanfront: occasional 'ear-protection' limit [ In reply to ]
On 12/05/2023 16:11, John Pilkington wrote:
> On 12/05/2023 14:25, Peter Bennett wrote:
>>
>> On 5/10/23 16:03, John Pilkington wrote:
>>> On 10/05/2023 19:32, Dan Ritter wrote:
>>>> John Pilkington wrote:
>>>>> I've come across a minor playback quirk with leanfront on my Sony
>>>>> Android
>>>>> TV, which drives my vintage stereo system from its headphone
>>>>> socket.   The
>>>>> Android version is 11, device name BRAVIA TL and its firmware date
>>>>> is now
>>>>> 2022 Nov 16.
>>>>
>>>>
>>>> Is it possible that the TV has a stereo pair of RCA jack outputs on the
>>>> back? If so, that would be a preferable output to your music
>>>> system, and shouldn't pass through the TV's limiter function at
>>>> all.
>>>>
>>>> -dsr-
>>>
>>> Thanks for the suggestion, but I think the answer is No.
>>>
>>> The supported Audio outputs appear to be HDMI ARC and digital
>>> optical, both two channel linear PCM 48 kHz 16 bits, or Dolby Audio.
>>>
>>> A footnote tells me to 'Connect your audio system to the HDMI IN 1 to
>>> route TV audio to your audio system'.  Strangely, my stereo doesn't
>>> have an HDMI socket.
>>>
>>> Even the headphone socket seems to be an endangered species now.
>>> Headphones are wireless and audio systems are soundbars or other
>>> digital exotica.  I expect I shall stay with what I've got.
>>>
>>> Cheers,
>>>
>>> John
>>>
>> I am confused. I thought that a Sony Android TV was a TV with android
>> built in. So you are driving your stereo from the TV headphone socket,
>> but the second and third emails say that you are not. Are you running
>> leanfront on the TV or on something else?
>>
>> Peter
>>
> I'm fairly sure that the 'ear-protection' drops in volume have been
> while running leanfront on the TV's hardware under its Android OS, but
> the info above was copied from the TV user's manual (and I could quote
> it in 18 other languages).
>
> leanfront gets its content via ethernet, but the TV also has 3 HDMI
> inputs as well as DVB and network sources.  One HDMI input comes from
> the nVidia card in the Myth FE/BE Fedora box and can display content
> from that by mythfrontend, mpv, vlc, browsers, terminals etc.
>
> I find it easy to choose what I'm using, but it wouldn't be a
> family-friendly setup.  It's even worse when feeding an HDMI input from
> a FireStick, with two different remotes in action.  I don't usually do
> that now.
>
> Whatever, I think the ear-protection experience is an Android OS
> feature.  The popup display shows a headphone symbol; it actually shows
> TV-audio gain rather than absolute output level.
>
> Sorry for the confusion.

Perps that was too much info. I want analog audio, which the
manufacturer provides only from the headphone socket. The manufacturer
also provides digital audio, either optically or via HDMI ARC.
>
> John
>
>

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Re: AndroidTV and leanfront: occasional 'ear-protection' limit [ In reply to ]
John Pilkington wrote:
>
> Perps that was too much info. I want analog audio, which the manufacturer
> provides only from the headphone socket. The manufacturer also provides
> digital audio, either optically or via HDMI ARC.

OK, optical to RCA stereo is easy enough.

https://www.amazon.com/PROZOR-Digital-Converter-Optical-Toslink/dp/B00KNNSKV0
$14 and it even comes with the TOSLink optical cable.


or for $28 you can get one that will do HDMI audio extraction as
well:
https://www.amazon.com/Converter-Multifunction-Extractor-Adapter-Toslink/dp/B07PWJSJ97

Either one of these should solve your problem by moving the
output from the safety-switched headphone jack to the line-level
digital outputs, which then get decoded into analog.

-dsr-
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Re: AndroidTV and leanfront: occasional 'ear-protection' limit [ In reply to ]
On Fri, 12 May 2023 19:51:58 -0400, you wrote:

>John Pilkington wrote:
>>
>> Perps that was too much info. I want analog audio, which the manufacturer
>> provides only from the headphone socket. The manufacturer also provides
>> digital audio, either optically or via HDMI ARC.
>
>OK, optical to RCA stereo is easy enough.
>
>https://www.amazon.com/PROZOR-Digital-Converter-Optical-Toslink/dp/B00KNNSKV0
>$14 and it even comes with the TOSLink optical cable.
>
>
>or for $28 you can get one that will do HDMI audio extraction as
>well:
>https://www.amazon.com/Converter-Multifunction-Extractor-Adapter-Toslink/dp/B07PWJSJ97
>
>Either one of these should solve your problem by moving the
>output from the safety-switched headphone jack to the line-level
>digital outputs, which then get decoded into analog.
>
>-dsr-

Of course, if you use a device like that, you have to remember that it
will contain a DAC (digital to analogue converter), and at that price
the DAC will be pretty bad quality and hence the sound quality will
suffer. Of course, the DAC in your TV may already be pretty bad as
TVs are not renowned for good quality audio.

I always ignore the TV's audio and get digital audio sent to a good
quality DAC. After my excellent old CD player/DAC developed a fault,
I recently invested in one of these:

FiiO Q7
https://www.fiio.com/q7

With that, the DAC is audiophile quality and the limiting factor in
the audio is now the quality of the source, which is not always very
good for TV recordings, but can be pretty good for downloaded video.
And my FLAC copies of my CDs sound very good. I have my MythTV box
connected to the Q7 via TOSLINK at the moment, as the drivers I have
to use for my TBS DVB-T2 and DVB-S2 tuners have a bug that makes the
USB audio connection not work. I intend to try fixing that bug when I
have some spare time. The Q7 outputs directly to my Sennheiser HD600
headphones (it has a proper headphone amp builtin) and also to my main
amp (Plinius SA50, class A) and my speakers (Acoustic Energy AE1). It
has different output modes for line out and headphone out on the same
sockets, the setting for which is annoyingly fiddly to change, but it
works well.

Since the Q7 is portable, I can take it and my headphones with me when
I go away from home and plug it into my laptop's MythTV setup via USB.
Or plug it into my phone or tablet to play music from them.
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Re: AndroidTV and leanfront: occasional 'ear-protection' limit [ In reply to ]
On 13/05/2023 08:31, Stephen Worthington wrote:
> On Fri, 12 May 2023 19:51:58 -0400, you wrote:
>
>> John Pilkington wrote:
>>>
>>> Perps that was too much info. I want analog audio, which the manufacturer
>>> provides only from the headphone socket. The manufacturer also provides
>>> digital audio, either optically or via HDMI ARC.
>>
>> OK, optical to RCA stereo is easy enough.
>>
>> https://www.amazon.com/PROZOR-Digital-Converter-Optical-Toslink/dp/B00KNNSKV0
>> $14 and it even comes with the TOSLink optical cable.
>>
>>
>> or for $28 you can get one that will do HDMI audio extraction as
>> well:
>> https://www.amazon.com/Converter-Multifunction-Extractor-Adapter-Toslink/dp/B07PWJSJ97
>>
>> Either one of these should solve your problem by moving the
>> output from the safety-switched headphone jack to the line-level
>> digital outputs, which then get decoded into analog.
>>
>> -dsr-
>
> Of course, if you use a device like that, you have to remember that it
> will contain a DAC (digital to analogue converter), and at that price
> the DAC will be pretty bad quality and hence the sound quality will
> suffer. Of course, the DAC in your TV may already be pretty bad as
> TVs are not renowned for good quality audio.
>
> I always ignore the TV's audio and get digital audio sent to a good
> quality DAC. After my excellent old CD player/DAC developed a fault,
> I recently invested in one of these:
>
> FiiO Q7

<snip, but the reviews are 'interesting'>

Thanks for these suggestions and comments. I have to say that although
my stereo system is old, the ears are even older, so I shall most likely
live with what I have.

But it may be worth noting that the digital audio outputs from this
lowish-end TV have lower nominal specs than many likely input streams.

John

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