On 2024-10-24 04:53, The Real Bev wrote:
> On 10/22/24 11:27 PM, Chris wrote:
>> The Real Bev <bashley101@gmail.com> wrote:

>>> Why not obviate the battery problem by putting the podcasts on a USB
>>> stick plugged into the AUX socket?
>>
>> You're assuming they're (1) in a vehicle and (2) where that is possible.
>
> (1) Indeed. I posit that "long trip" implies a car rather than a set of
> portable bluetooth speakers. (2) I would be willing to bet that any car
> with a bluetooth connection to a phone will also have an AUX connection.
>  Maybe also a CD player.

Mine has neither. I have an USB socket, though.

AUX in my parlance is a jack for connection of an audio source.

--
Cheers, Carlos.

On 10/24/24 7:06 AM, Carlos E.R. wrote:
> On 2024-10-24 04:53, The Real Bev wrote:
>> On 10/22/24 11:27 PM, Chris wrote:
>>> The Real Bev <bashley101@gmail.com> wrote:
>
>
>>>> Why not obviate the battery problem by putting the podcasts on a USB
>>>> stick plugged into the AUX socket?
>>>
>>> You're assuming they're (1) in a vehicle and (2) where that is possible.
>>
>> (1) Indeed. I posit that "long trip" implies a car rather than a set of
>> portable bluetooth speakers. (2) I would be willing to bet that any car
>> with a bluetooth connection to a phone will also have an AUX connection.
>>  Maybe also a CD player.
>
> Mine has neither. I have an USB socket, though.
>
> AUX in my parlance is a jack for connection of an audio source.

Mine is a USB socket that I plug an audiobook-filled thumbdrive into.
Clearly labeled AUX. That's the only thing I've tried.

--
Cheers, Bev
"I love deadlines... especially the whooshing sound
they make as they go by." -Douglas Adams

On 10/23/24 11:56 PM, sms wrote:
> On 10/22/2024 8:45 PM, The Real Bev wrote:
>
> <snip>
>
>> Why not obviate the battery problem by putting the podcasts on a USB
>> stick plugged into the AUX socket?
>
> The Aux socket is a 3.5mm jack. A USB stick plugs into a USB port.

Mine (2013 Corolla) is a USB port clearly labeled AUX. Take it up with
Toyota!

> In a vehicle you have power for the phone anyway so there is no battery
> issue.

Perhaps the worry is the heat caused by the constant charge.

--
Cheers, Bev
"I love deadlines... especially the whooshing sound
they make as they go by." -Douglas Adams

On Wed, 23 Oct 2024 13:02:43 -0500, VanguardLH wrote:

> I've NEVER been impressed
> with the audio quality out of a phone's internal speaker. When using a
> headset, I get the over-the-ear type with noise cancellation.

It's just a podcast. Audio quality isn't a major concern.

The concern is there are often long periods of isolated boredom when
traveling on long trips where there are often benches or corners where you
wait for some type of scheduled transportation to arrive but which you
can't easily schedule because you have no control over arrivals/departures.

During those long waiting periods you may or may not have access to USB
power and you may or may not have access to the Internet so the question
was asked without adding those two complexities into the problem set.

Generally I download a few podcasts (just in case) and stream otherwise,
but as I said, you can't be assured of an Internet connection at all times.

Given those constraints, the question was only about the power delta
between spitting out audio from the phone speaker versus via casting that
audio to a separate bluetooth speaker (which is independently powered).

With the equipment that I own, my hand-held bluetooth speaker is louder but
it's a PITA to carry around and ensure that it's always charged up by USB.

I had thought the phone's speaker would be MUCH MORE power hungry though,
than casting the audio to the bluetooth speaker - but one respondent said
it was NOT more efficient (while another said it was more efficient).

So I'm still not sure.

Bill Powell <bill@anarchists.org> wrote:

> I had thought the phone's speaker would be MUCH MORE power hungry though,
> than casting the audio to the bluetooth speaker - but one respondent said
> it was NOT more efficient (while another said it was more efficient).

Depends on whether your phone supports BLE (Bluetooth Low Energy) or the
older traditional BT. BLE will consume as much power as BT, but sends
in bursts. Between the bursts the BLE radio is at idle/sleep power
level. However, there are high-efficiency speakers that can be used in
the phone, and other factors depend how much power the speakers consume,
like volume level. Ear buds and headsets don't need to use nearly as
much power to generate the same volume as the speakers since they are in
or right atop your ears. There are a lot of variances in the components
used for the speakers, in the headset, if BLE or BT is used, and even
the capacity of the battery (a lower capacity battery will die faster
under the same load).

As others pointed out, you should measure the difference in battery drop
(starting from a full charge) while testing how much the battery level
drops between when using the speaker, and when using the BT headset.
You could use an app to monitor battery usage by app, like whatever
you're using the play the podcast, or the main battery's drop in power
level. I would test for, at least, an hour in each mode (speakers only,
and BT/BLE headset only), and probably repeat the test, at least, 5
times to get an average reading. Recharge to 100% before each test to
start at a known capacity in the phone's battery. For the BT/BLE
headset, make sure those are also charged 100% before each test when
using them for audio output. Testing and measuring will let you know
for sure. You could use an app to measure the battery drop after each
test, and gauge where the power is most consumed, or just watch the
battery level indicator for a rough estimate.

My non-exhaustive research shows that with newer components, and using
BLE with the headseat, and with high-efficiency speakers, the speakers
will draw the same, or maybe a tiny more, than the BLE headset. Higher
audio volume in the speakers means more power consumed by the phone's
battery, just like higher volume in the headset means more power
consumption on the headset's battery.

I was in the camp that speakers used more power than BLE headsets, but
the more I read the more they can be [nearly] equal in power consumption
if the latest components are used in the design. Actual measurement is
more accurate rather than guessing based on specs which can be wildly
exaggerated. If you have internal SATA-3 drives, HDD or SSD, or even
m.2 NVM3 SSDs in your computer, have you ever reached the theoretical
and marketed 6 Gbps transfer rate, even for burst transfer mode versus
sustained transfer mode? Marketing cannot be trusted to supply accurate
specifications.

In comp.mobile.android, on Wed, 23 Oct 2024 19:53:56 -0700, The Real Bev
<bashley101@gmail.com> wrote:

>On 10/22/24 11:27 PM, Chris wrote:
>> The Real Bev <bashley101@gmail.com> wrote:
>>> On 10/22/24 7:06 PM, Qihe wrote:
>>>> Qihe <Q@invalid.invalid> ha scritto:
>>>>
>>>>> Chris <ithinkiam@gmail.com> ha scritto:
>>>>>
>>>>>> sms <scharf.steven@geemail.com> wrote:
>>>>>>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>>>>>>> Which uses less of the phone's battery power on long trips?
>>>>>>>>
>>>>>>>> Playing long podcasts with the Android speaker as the output?
>>>>>>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>>>>>>
>>>>>>>> Any idea?
>>>>>>>
>>>>>>> Speaker wattage is about 3W.
>>>>>>>
>>>>>>> Bluetooth uses about 2.5mW.
>>>>>>>
>>>>>>> So the speaker uses more than 3000x the power.
>>>>>>
>>>>>> Do you have a source?
>>>>>
>>>>> https://www.androidauthority.com/does-bluetooth-drain-battery-1145853/
>>>>>
>>>>> --
>>>> They say: "The results show that playing back audio over Bluetooth
>>>> consumes essentially the same amount of power as playing back
>>>> audio over speakers or headphones with Bluetooth turned
>>>> off".
>>>
>>> Why not obviate the battery problem by putting the podcasts on a USB
>>> stick plugged into the AUX socket?
>>
>> You're assuming they're (1) in a vehicle and (2) where that is possible.
>
>(1) Indeed. I posit that "long trip" implies a car rather than a set of
>portable bluetooth speakers. (2) I would be willing to bet that any car
>with a bluetooth connection to a phone will also have an AUX connection.
> Maybe also a CD player.

I have bluetooth and aux inputs in my 2005 Toyota Solara.

I installed a device from GTA Car Kit. They make them for many older
cars (but not all). It plugs into the back of the radio and runs when
I push the CD button. Once connected, a new option, CD changer, is
available, but it means bluetooth.

Comes with a microphone so I can make and answer phone calls too. It
works about as well as I can imagine. Installation was pretty easy. .

And they have videos for many cars that deal iirc with getting behind
the rado or into the dash.

I think the AUX input was partly in addition to the GTA Car Kit. It had
a jack but the box and wiring is hid behind the radio. From Amazon
perhaps I bought an extension that plugs into the GTA Car kit and mounds
in a round hole I had to make in the back of the utility box below the
radio.

Qihe, 2024-10-23 15:39:

> Arno Welzel <usenet@arnowelzel.de> ha scritto:
>
>> Qihe, 2024-10-23 00:34:
>>
>>> Jörg Lorenz <hugybear@gmx.net> ha scritto:
>>>>
>>>> When I used podcasts they were usually downloaded and could be played
>>>> any time without a internet connection. That makes them interesting for
>>>> longer flights or ship travelling. And many users build libraries of
>>>> podcasts.
>>>>
>>> And this is also far less environmental impact than streaming.
>>> People should do the same with any media content (video tutorials
>>> on YouTube, music, movies...)
>>> That's also why real FM radio is better than webradio.
>>
>> Well - there is no big difference if you download 100 MB as one file or
>> stream it using HLS with smaller segments. In the end you will download
>> 100 MB data.
>
> You are right... if you are going to stream it only once.
> If you are going to play it several times, streaming gets worst
> than downloading.

Indeed. But podcasts are usually only listened once and not repeated on
a regular basis.

>> But on the other hand using data media like CD/DVD/BD
>> was also not ideal since these media had to be produced first.
>>
> There must be few giga free on your private storage. Anyway usb
> sticks, memory cards... are not throwaway items.

My available private storage is around 30 TB in total, distributed over
three servers, two NAS and a number of computers and smartphones ;-)

--
Arno Welzel
https://arnowelzel.de

VanguardLH, 2024-10-23 15:26:

> Arno Welzel <usenet@arnowelzel.de> wrote:
>
>> sms, 2024-10-22 22:05:
>>
>>> On 10/21/2024 11:15 PM, Bill Powell wrote:
>>>> Which uses less of the phone's battery power on long trips?
>>>>
>>>> Playing long podcasts with the Android speaker as the output?
>>>> Playing long podcasts with a Bluetooth speaker as the output instead?
>>>>
>>>> Any idea?
>>>
>>> Speaker wattage is about 3W.
>>
>> So it draws around 1 ampere when running at around 3 volts? Really?
>>
>> Maybe the theoretical output wattage is 3 watts, but a smartphons
>> speaker will also just draw a few 100 mA which will be around 0.3 to 1 watts
>>
>>> Bluetooth uses about 2.5mW.
>>
>> No. Depending on how actually use Bluetooth, the power requirements can
>> be much higher:
>>
>> <https://novelbits.io/ble-power-consumption-optimization/>
>
> That article addresses power consumption at the BLE device, not at the
> smartphone powering its BT radio. In the phone, not in the BT devices,
[...]

This article was just an example to illustrate some real world numbers.

Even with BLE it can happen, that a device can draw an *average* power
of more than 18 mW and not just 2.5 mW. And "device" is also the
Smartphone of course.

And when BLE is already using 18 mW in some situations, regular
Bluetooth does not need *less* power than this - the reason for BLE was
to *save* power - thus the name "Bluetooth Low Energy".

--
Arno Welzel
https://arnowelzel.de