• USB Speaker for Pi 3

    From Adrian@3:770/3 to All on Sun Nov 22 11:44:51 2020
    I'm looking for a simple USB speaker for a Pi 3. I'm not after HiFi
    quality, just something that will play a simple MP3 file when required.

    Various search engines are not being my friend on this, I have tried a
    simple one sourced via Amazon, which is billed as being suitable for a
    Laptop, but whilst it works fine on Windows, it won't play on my Pi.
    When plugged in I get a low volume of white noise, but it fails when I
    try to run it.

    Running speaker-test -c2 I get a short clicking noise then

    speaker-test 1.1.3

    Playback device is default
    Stream parameters are 48000Hz, S16_LE, 2 channels
    Using 16 octaves of pink noise
    Rate set to 48000Hz (requested 48000Hz)
    Buffer size range from 2048 to 16384
    Period size range from 1024 to 1024
    Using max buffer size 16384
    Periods = 4
    was set period_size = 1024
    was set buffer_size = 16384
    0 - Front Left
    Write error: -5,Input/Ouput error
    xrun_recovery failed: -5,Input/Ouput error
    Transfer failed: Input/output error

    Any suggestions ?

    Adrian
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  • From Andy Burns@3:770/3 to Adrian on Sun Nov 22 12:06:01 2020
    Adrian wrote:

    I have tried a
    simple one sourced via Amazon, which is billed as being suitable for a Laptop, but whilst it works fine on Windows, it won't play on my Pi.

    what do "lsusb" and "dmesg" have to say?

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  • From Chris Elvidge@3:770/3 to The Natural Philosopher on Sun Nov 22 12:42:14 2020
    On 22/11/2020 12:20 pm, The Natural Philosopher wrote:
    On 22/11/2020 11:44, Adrian wrote:
    I'm looking for a simple USB speaker for a Pi 3. I'm not after HiFi
    quality, just something that will play a simple MP3 file when required.


    In the spirit of 'if I wanted to get to there, I wouldn't start from
    here' frankly the inbuilt sound on a Pi is awful

    I had great success with a hifiberry audio DAC hat and there are some
    that even have small power amplifiers


    https://thepihut.com/collections/hifiberry/products/hifiberry-pi-zero-miniamp


    Just add passive loudspeakers..

    Or use e.g. https://thepihut.com/collections/hifiberry/products/hifiberry-dac-zero
    (which is what I have) to a normal set of PC speakers using a phono plug
    to 3.5mm jack adapter.

    r

    Any suggestions ?

    Adrian



    Do you have the correct cable for a Pi3? 4-pole jack on the Pi end. https://www.raspberrypi-spy.co.uk/2014/07/raspberry-pi-model-b-3-5mm-audiovideo -jack/

    Have you tried amixer?
    amixer cset numid=3 [0|1|2]
    where 0 is auto, 1 is analog (jack), 2 is hdmi (digital)




    --

    Chris Elvidge, England

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  • From Nikolaj Lazic@3:770/3 to All on Sun Nov 22 12:48:34 2020
    Dana Sun, 22 Nov 2020 11:44:51 +0000, Adrian <bulleid@ku.gro.lioff> napis'o:
    I'm looking for a simple USB speaker for a Pi 3. I'm not after HiFi
    quality, just something that will play a simple MP3 file when required.

    https://www.aliexpress.com/item/32916376092.html
    And plug in any speaker and you've got a USB speaker.


    Various search engines are not being my friend on this, I have tried a
    simple one sourced via Amazon, which is billed as being suitable for a Laptop, but whilst it works fine on Windows, it won't play on my Pi.
    When plugged in I get a low volume of white noise, but it fails when I
    try to run it.

    Running speaker-test -c2 I get a short clicking noise then

    alsamixer and turn up the volume.


    speaker-test 1.1.3

    Playback device is default
    Stream parameters are 48000Hz, S16_LE, 2 channels
    Using 16 octaves of pink noise
    Rate set to 48000Hz (requested 48000Hz)
    Buffer size range from 2048 to 16384
    Period size range from 1024 to 1024
    Using max buffer size 16384
    Periods = 4
    was set period_size = 1024
    was set buffer_size = 16384
    0 - Front Left
    Write error: -5,Input/Ouput error
    xrun_recovery failed: -5,Input/Ouput error
    Transfer failed: Input/output error

    Any suggestions ?

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  • From The Natural Philosopher@3:770/3 to Adrian on Sun Nov 22 12:20:54 2020
    On 22/11/2020 11:44, Adrian wrote:
    I'm looking for a simple USB speaker for a Pi 3.  I'm not after HiFi quality, just something that will play a simple MP3 file when required.


    In the spirit of 'if I wanted to get to there, I wouldn't start from
    here' frankly the inbuilt sound on a Pi is awful

    I had great success with a hifiberry audio DAC hat and there are some
    that even have small power amplifiers

    https://thepihut.com/collections/hifiberry/products/hifiberry-pi-zero-miniamp

    Just add passive loudspeakers..

    Or use e.g. https://thepihut.com/collections/hifiberry/products/hifiberry-dac-zero
    (which is what I have) to a normal set of PC speakers using a phono plug
    to 3.5mm jack adapter.

    r

    Any suggestions ?

    Adrian


    --
    “The fundamental cause of the trouble in the modern world today is that
    the stupid are cocksure while the intelligent are full of doubt."

    - Bertrand Russell

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  • From Adrian@3:770/3 to usenet@andyburns.uk on Sun Nov 22 12:46:47 2020
    In message <i1v2hbFlfegU1@mid.individual.net>, Andy Burns
    <usenet@andyburns.uk> writes
    Adrian wrote:

    I have tried a simple one sourced via Amazon, which is billed as
    being suitable for a Laptop, but whilst it works fine on Windows, it
    won't play on my Pi.

    what do "lsusb" and "dmesg" have to say?


    Bus 001 Device 014: ID 1908:2070 GEMBIRD
    Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
    SMSC9512/9514 Fast Ethernet Adapter
    Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

    and

    dmesg | grep -i usb gives

    [ 0.071203] usbcore: registered new interface driver usbfs
    [ 0.071258] usbcore: registered new interface driver hub
    [ 0.071353] usbcore: registered new device driver usb
    [ 0.275629] usbcore: registered new interface driver lan78xx
    [ 0.275686] usbcore: registered new interface driver smsc95xx
    [ 0.303548] dwc_otg 3f980000.usb: base=(ptrval)
    [ 0.704747] dwc_otg 3f980000.usb: DWC OTG Controller
    [ 0.704781] dwc_otg 3f980000.usb: new USB bus registered, assigned
    bus number 1
    [ 0.704817] dwc_otg 3f980000.usb: irq 56, io mem 0x00000000
    [ 0.705123] usb usb1: New USB device found, idVendor=1d6b,
    idProduct=0002, bcdDevice= 4.19
    [ 0.705134] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [ 0.705143] usb usb1: Product: DWC OTG Controller
    [ 0.705153] usb usb1: Manufacturer: Linux 4.19.66-v7+ dwc_otg_hcd
    [ 0.705162] usb usb1: SerialNumber: 3f980000.usb
    [ 0.705775] hub 1-0:1.0: USB hub found
    [ 0.706668] usbcore: registered new interface driver usb-storage
    [ 0.711122] usbcore: registered new interface driver usbhid
    [ 0.711127] usbhid: USB HID core driver
    [ 1.141861] usb 1-1: new high-speed USB device number 2 using dwc_otg
    [ 1.382184] usb 1-1: New USB device found, idVendor=0424,
    idProduct=9514, bcdDevice= 2.00
    [ 1.382201] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
    [ 1.382846] hub 1-1:1.0: USB hub found
    [ 1.701860] usb 1-1.1: new high-speed USB device number 3 using
    dwc_otg
    [ 1.832246] usb 1-1.1: New USB device found, idVendor=0424,
    idProduct=ec00, bcdDevice= 2.00
    [ 1.832261] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
    [ 1.925535] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:71:3a:04
    [ 9.223975] usbcore: registered new interface driver brcmfmac [9423250.567791] usb 1-1.4: new full-speed USB device number 4 using
    dwc_otg
    [9423250.710552] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9423250.710569] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9423250.710579] usb 1-1.4: Product: USB2.0 Device
    [9423250.710588] usb 1-1.4: Manufacturer: Generic
    [9423250.710597] usb 1-1.4: SerialNumber: 20130100ph0
    [9423252.091545] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423252.111823] usbcore: registered new interface driver snd-usb-audio [9423704.977671] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423705.184433] usb 1-1.4: USB disconnect, device number 4
    [9423707.019453] usb 1-1.4: new full-speed USB device number 5 using
    dwc_otg
    [9423707.162174] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9423707.162190] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9423707.162199] usb 1-1.4: Product: USB2.0 Device
    [9423707.162208] usb 1-1.4: Manufacturer: Generic
    [9423707.162217] usb 1-1.4: SerialNumber: 20130100ph0
    [9423707.170181] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423731.785299] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423731.808447] usb 1-1.4: USB disconnect, device number 5
    [9423733.899559] usb 1-1.4: new full-speed USB device number 6 using
    dwc_otg
    [9423734.042302] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9423734.042318] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9423734.042327] usb 1-1.4: Product: USB2.0 Device
    [9423734.042336] usb 1-1.4: Manufacturer: Generic
    [9423734.042345] usb 1-1.4: SerialNumber: 20130100ph0
    [9423734.047915] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423756.931672] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423757.152434] usb 1-1.4: USB disconnect, device number 6
    [9423758.979647] usb 1-1.4: new full-speed USB device number 7 using
    dwc_otg
    [9423759.122422] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9423759.122439] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9423759.122448] usb 1-1.4: Product: USB2.0 Device
    [9423759.122458] usb 1-1.4: Manufacturer: Generic
    [9423759.122467] usb 1-1.4: SerialNumber: 20130100ph0
    [9423759.127793] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423780.565297] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423780.704300] usb 1-1.4: USB disconnect, device number 7
    [9423782.539745] usb 1-1.4: new full-speed USB device number 8 using
    dwc_otg
    [9423782.682562] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9423782.682580] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9423782.682590] usb 1-1.4: Product: USB2.0 Device
    [9423782.682599] usb 1-1.4: Manufacturer: Generic
    [9423782.682609] usb 1-1.4: SerialNumber: 20130100ph0
    [9423782.687913] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423807.021794] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423807.072447] usb 1-1.4: USB disconnect, device number 8
    [9423808.899843] usb 1-1.4: new full-speed USB device number 9 using
    dwc_otg
    [9423809.041422] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9423809.041438] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9423809.041448] usb 1-1.4: Product: USB2.0 Device
    [9423809.041458] usb 1-1.4: Manufacturer: Generic
    [9423809.041467] usb 1-1.4: SerialNumber: 20130100ph0
    [9423809.046789] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9423867.744469] usb 1-1.4: USB disconnect, device number 9
    [9426821.512090] usb 1-1.4: new full-speed USB device number 10 using
    dwc_otg
    [9426821.653685] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9426821.653702] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9426821.653711] usb 1-1.4: Product: USB2.0 Device
    [9426821.653721] usb 1-1.4: Manufacturer: Generic
    [9426821.653730] usb 1-1.4: SerialNumber: 20130100ph0
    [9426821.659298] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9426843.159932] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9426843.232472] usb 1-1.4: USB disconnect, device number 10
    [9426845.062187] usb 1-1.4: new full-speed USB device number 11 using
    dwc_otg
    [9426845.204935] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9426845.204951] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9426845.204961] usb 1-1.4: Product: USB2.0 Device
    [9426845.204970] usb 1-1.4: Manufacturer: Generic
    [9426845.204979] usb 1-1.4: SerialNumber: 20130100ph0
    [9426845.210297] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9426858.929804] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9426859.104445] usb 1-1.4: USB disconnect, device number 11
    [9426860.932256] usb 1-1.4: new full-speed USB device number 12 using
    dwc_otg
    [9426861.075060] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9426861.075076] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9426861.075086] usb 1-1.4: Product: USB2.0 Device
    [9426861.075095] usb 1-1.4: Manufacturer: Generic
    [9426861.075104] usb 1-1.4: SerialNumber: 20130100ph0
    [9426861.079429] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9426969.224180] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9426969.440463] usb 1-1.4: USB disconnect, device number 12
    [9426971.272711] usb 1-1.4: new full-speed USB device number 13 using
    dwc_otg
    [9426971.415433] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9426971.415450] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9426971.415460] usb 1-1.4: Product: USB2.0 Device
    [9426971.415469] usb 1-1.4: Manufacturer: Generic
    [9426971.415478] usb 1-1.4: SerialNumber: 20130100ph0
    [9426971.420798] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9427003.518307] usb 1-1.4: 1:1: cannot get freq at ep 0x2
    [9427003.744447] usb 1-1.4: USB disconnect, device number 13
    [9427005.572860] usb 1-1.4: new full-speed USB device number 14 using
    dwc_otg
    [9427005.715687] usb 1-1.4: New USB device found, idVendor=1908, idProduct=2070, bcdDevice= 1.00
    [9427005.715704] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [9427005.715713] usb 1-1.4: Product: USB2.0 Device
    [9427005.715723] usb 1-1.4: Manufacturer: Generic
    [9427005.715732] usb 1-1.4: SerialNumber: 20130100ph0
    [9427005.721173] usb 1-1.4: 1:1: cannot get freq at ep 0x2


    Adrian
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  • From Adrian@3:770/3 to tnp@invalid.invalid on Sun Nov 22 13:04:33 2020
    In message <rpdl37$mik$1@dont-email.me>, The Natural Philosopher <tnp@invalid.invalid> writes
    On 22/11/2020 11:44, Adrian wrote:
    I'm looking for a simple USB speaker for a Pi 3. I'm not after HiFi >>quality, just something that will play a simple MP3 file when required.


    In the spirit of 'if I wanted to get to there, I wouldn't start from
    here' frankly the inbuilt sound on a Pi is awful


    I've no illusion as to the quality of the sound, all I need it to do is
    make a noise.

    I had great success with a hifiberry audio DAC hat and there are some
    that even have small power amplifiers

    https://thepihut.com/collections/hifiberry/products/hifiberry-pi-zero-miniamp

    Just add passive loudspeakers..

    Ooh, that might work ! I'm already using the GPIO bus, but hopefully
    that won't be a problem (SDA/SCl and BCM 6, plus 3.3V power). The three
    inch speakers ought to be big enough, and I've got enough space
    available for one of those (two if that is what is needed).


    Or use e.g. >https://thepihut.com/collections/hifiberry/products/hifiberry-dac-zero
    (which is what I have) to a normal set of PC speakers using a phono
    plug to 3.5mm jack adapter.


    I did consider that, but part of the problem is that I've not got a lot
    of space to play with, and even a small set of speakers might me too
    big, particularly if I've also got to find space for a multiplug for a
    power supply. Relocating the Pi would be a non-trivial task.

    Adrian
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  • From Dave Liquorice@3:770/3 to Adrian on Sun Nov 22 13:18:36 2020
    On Sun, 22 Nov 2020 11:44:51 +0000, Adrian wrote:

    I'm looking for a simple USB speaker for a Pi 3. I'm not after HiFi
    quality, just something that will play a simple MP3 file when required.

    Why USB? A Pi will do audio out without any extras, apart from
    perhaps a small analogue amplifier. Certainly well enough for a tiny
    speakers.

    --
    Cheers
    Dave.

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  • From Adrian@3:770/3 to Lazic on Sun Nov 22 13:06:32 2020
    In message <slrnrrknh2.ik1.nlazicBEZ_OVOGA@mudrac.ffzg.hr>, Nikolaj
    Lazic <nlazicBEZ_OVOGA@mudrac.ffzg.hr> writes
    alsamixer and turn up the volume.


    that reported that the device was unplugged as soon as I tried the test.

    Adrian
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  • From Nikolaj Lazic@3:770/3 to All on Sun Nov 22 12:51:20 2020
    Dana Sun, 22 Nov 2020 12:48:34 -0000 (UTC), Nikolaj Lazic <nlazicBEZ_OVOGA@mudrac.ffzg.hr> napis'o:
    Dana Sun, 22 Nov 2020 11:44:51 +0000, Adrian <bulleid@ku.gro.lioff> napis'o:
    I'm looking for a simple USB speaker for a Pi 3. I'm not after HiFi
    quality, just something that will play a simple MP3 file when required.

    https://www.aliexpress.com/item/32916376092.html

    https://www.aliexpress.com/item/32791447670.html

    And plug in any speaker and you've got a USB speaker.

    [snip]

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  • From The Natural Philosopher@3:770/3 to Dave Liquorice on Sun Nov 22 13:23:52 2020
    On 22/11/2020 13:18, Dave Liquorice wrote:
    On Sun, 22 Nov 2020 11:44:51 +0000, Adrian wrote:

    I'm looking for a simple USB speaker for a Pi 3. I'm not after HiFi
    quality, just something that will play a simple MP3 file when required.

    Why USB? A Pi will do audio out without any extras, apart from
    perhaps a small analogue amplifier. Certainly well enough for a tiny speakers.

    pretty awful PWM shite tho IIRC. Not sure whats down the end of the HDMI
    port either.


    --
    “Progress is precisely that which rules and regulations did not foresee,”

    – Ludwig von Mises

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  • From Adrian@3:770/3 to Dave Liquorice on Sun Nov 22 14:12:52 2020
    In message <nyyfbegfubjuvyypbz.qk7mv00.pminews@news.individual.net>,
    Dave Liquorice <allsortsnotthisbit@howhill.com> writes
    Why USB? A Pi will do audio out without any extras, apart from
    perhaps a small analogue amplifier. Certainly well enough for a tiny >speakers.


    My reading up on this before I started was that I would need an amp of
    some description if I used the audio out, and space is limited,
    particularly if I need to add in an extra power supply, so a basic Pi
    powered is preferred.

    Adrian
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  • From A. Dumas@3:770/3 to The Natural Philosopher on Sun Nov 22 15:11:42 2020
    On 22-11-2020 14:23, The Natural Philosopher wrote:
    pretty awful PWM shite tho IIRC.

    That used to be the case, but they improved it immensely. Certainly good
    enough for "just a sound". OP should simply use the 3.5mm jack and el
    cheapo active PC speakers. (They must be active because it's a headphone
    plug, not a normal line amplified signal.)

    Not sure whats down the end of the HDMI
    port either.

    Perfect digital audio. Quality depends on the DAC and speakers on the
    other end. If you have a "receiver" (amp which has hdmi inputs) then a
    €10 Pi Zero (and a mini-hdmi to hdmi adapter...) is good enough for hifi audio.

    --- SoupGate-Win32 v1.05
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  • From Andy Burns@3:770/3 to Adrian on Sun Nov 22 13:27:39 2020
    Adrian wrote:

    Andy Burns wrote:

    what do "lsusb" and "dmesg" have to say?

    Bus 001 Device 014: ID 1908:2070 GEMBIRD

    a reasonable start

    <https://linux-hardware.org/index.php?id=usb:1908-2070>

    do you need to put these audio things in config.txt ?

    <https://www.raspberrypi.org/forums/viewtopic.php?t=232228>

    dmesg | grep -i usb gives

    [9427005.721173] usb 1-1.4: 1:1: cannot get freq at ep 0x2

    lots of hits, no obvious answers

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  • From Dave Liquorice@3:770/3 to The Natural Philosopher on Sun Nov 22 14:33:08 2020
    On Sun, 22 Nov 2020 13:23:52 +0000, The Natural Philosopher wrote:

    Why USB? A Pi will do audio out without any extras, apart from
    perhaps a small analogue amplifier. Certainly well enough for a
    tiny
    speakers.

    pretty awful PWM shite tho IIRC.

    The audio out from a Pi3B+ into a pair of 5 crappy plastic active
    (as in they have built in amps) PC speakers is fine. The OP states
    he's not after "HiFi" and is limited on space for speakers...

    Not sure whats down the end of the HDMI port either.

    What ever is shoved in at the other end. Rip a DVD/Blueray without reprocessing/transcoding/reencoding WHY you get was on the disc.

    --
    Cheers
    Dave.

    --- SoupGate-Win32 v1.05
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  • From Dave Liquorice@3:770/3 to Adrian on Sun Nov 22 14:39:37 2020
    On Sun, 22 Nov 2020 14:12:52 +0000, Adrian wrote:

    Why USB? A Pi will do audio out without any extras, apart from
    perhaps a small analogue amplifier. Certainly well enough for a
    tiny
    speakers.

    My reading up on this before I started was that I would need an amp of
    some description if I used the audio out, and space is limited,
    particularly if I need to add in an extra power supply, so a basic Pi
    powered is preferred.

    Quite a number of Pi powered DAC solutions some with on board amps.
    For tiddly speakers and non-HiFi you don't need masses of power or
    high voltage (ie > 5 V) power rails. 4 V (to avoid clipping and have
    a bit of headroom) into 8 ohms is 2 W or so, more than enough.

    --
    Cheers
    Dave.

    --- SoupGate-Win32 v1.05
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  • From The Natural Philosopher@3:770/3 to Adrian on Sun Nov 22 14:50:29 2020
    On 22/11/2020 14:12, Adrian wrote:
    In message <nyyfbegfubjuvyypbz.qk7mv00.pminews@news.individual.net>,
    Dave Liquorice <allsortsnotthisbit@howhill.com> writes
    Why USB? A Pi will do audio out without any extras, apart from
    perhaps a small analogue amplifier. Certainly well enough for a tiny
    speakers.


    My reading up on this before I started was that I would need an amp of
    some description if I used the audio out, and space is limited,
    particularly if I need to add in an extra power supply, so a basic Pi
    powered is preferred.

    Adrian

    https://www.amazon.co.uk/Trust-Compact-Speakers-Computer-Powered/dp/B00JRW0M32

    USB for power. 3.5mm jack for sound.
    --
    Labour - a bunch of rich people convincing poor people to vote for rich
    people by telling poor people that "other" rich people are the reason
    they are poor.

    Peter Thompson

    --- SoupGate-Win32 v1.05
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  • From The Natural Philosopher@3:770/3 to Dave Liquorice on Sun Nov 22 14:52:11 2020
    On 22/11/2020 14:39, Dave Liquorice wrote:
    On Sun, 22 Nov 2020 14:12:52 +0000, Adrian wrote:

    Why USB? A Pi will do audio out without any extras, apart from
    perhaps a small analogue amplifier. Certainly well enough for a
    tiny
    speakers.

    My reading up on this before I started was that I would need an amp of
    some description if I used the audio out, and space is limited,
    particularly if I need to add in an extra power supply, so a basic Pi
    powered is preferred.

    Quite a number of Pi powered DAC solutions some with on board amps.
    For tiddly speakers and non-HiFi you don't need masses of power or
    high voltage (ie > 5 V) power rails. 4 V (to avoid clipping and have
    a bit of headroom) into 8 ohms is 2 W or so, more than enough.

    cheapo speakers will be about 80dB per watt at one meter. That's still
    70dBm at 100mW.

    That is loud talking level.



    --
    Labour - a bunch of rich people convincing poor people to vote for rich
    people by telling poor people that "other" rich people are the reason
    they are poor.

    Peter Thompson

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  • From Adrian@3:770/3 to tnp@invalid.invalid on Sun Nov 22 15:10:28 2020
    In message <rpdtrl$frl$1@dont-email.me>, The Natural Philosopher <tnp@invalid.invalid> writes >https://www.amazon.co.uk/Trust-Compact-Speakers-Computer-Powered/dp/B00JRW0M32

    USB for power. 3.5mm jack for sound.

    Thanks, another option that looks like it will work.

    Adrian
    --
    To Reply :
    replace "bulleid" with "adrian" - all mail to bulleid is rejected
    Sorry for the rigmarole, If I want spam, I'll go to the shops
    Every time someone says "I don't believe in trolls", another one dies.

    --- SoupGate-Win32 v1.05
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  • From John Aldridge@3:770/3 to All on Mon Nov 23 11:14:16 2020
    In article <xWctcgHz8kufFwxe@ku.gro.lloiff>, bulleid@ku.gro.lioff
    says...

    I'm looking for a simple USB speaker for a Pi 3. I'm not after HiFi
    quality, just something that will play a simple MP3 file when required.


    Another "not what you asked for" post, but might a cheap battery powered bluetooth speaker do the trick? E.g.

    https://www.amazon.co.uk/dp/B01HTH3C8S

    Which I've just tried on my RPi4, but I don't see why it wouldn't work
    on a RPi3.

    John

    --- SoupGate-Win32 v1.05
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  • From Scott Alfter@3:770/3 to tnp@invalid.invalid on Mon Nov 23 18:04:02 2020
    In article <rpdop8$dg3$2@dont-email.me>,
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 22/11/2020 13:18, Dave Liquorice wrote:
    On Sun, 22 Nov 2020 11:44:51 +0000, Adrian wrote:

    I'm looking for a simple USB speaker for a Pi 3. I'm not after HiFi
    quality, just something that will play a simple MP3 file when required.

    Why USB? A Pi will do audio out without any extras, apart from
    perhaps a small analogue amplifier. Certainly well enough for a tiny
    speakers.

    pretty awful PWM shite tho IIRC. Not sure whats down the end of the HDMI
    port either.

    HDMI audio is pretty much the same, no matter the source. For Kodi boxes
    and such, HDMI on the RPi will handle multichannel PCM, or pretty much any lossy or lossless format that your A/V receiver can handle. It's indistinguishable from a desktop PC, a standalone Blu-ray or DVD player, or
    any other source.

    _/_
    / v \ Scott Alfter (remove the obvious to send mail)
    (IIGS( https://alfter.us/ Top-posting!
    \_^_/ >What's the most annoying thing on Usenet?

    --- SoupGate-Win32 v1.05
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)
  • From Adrian@3:770/3 to Aldridge on Mon Nov 23 18:01:10 2020
    In message <MPG.3a25a9e242216a7f98978d@news.eternal-september.org>, John Aldridge <jpsa@cantab.net> writes
    Another "not what you asked for" post, but might a cheap battery powered >bluetooth speaker do the trick? E.g.

    https://www.amazon.co.uk/dp/B01HTH3C8S

    Which I've just tried on my RPi4, but I don't see why it wouldn't work
    on a RPi3.

    Thanks.

    It says that it will play for 15 hours, but it gives no indication as to
    what the battery life is if it is turned on, but not playing (e.g.
    standby). Something else that I didn't mention in the original post, is
    that this would be on 7*24, although it may not be used at all on any
    given day. So anything battery powered is unlikely to be suitable.

    Adrian
    --
    To Reply :
    replace "bulleid" with "adrian" - all mail to bulleid is rejected
    Sorry for the rigmarole, If I want spam, I'll go to the shops
    Every time someone says "I don't believe in trolls", another one dies.

    --- SoupGate-Win32 v1.05
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)
  • From John Aldridge@3:770/3 to All on Mon Nov 23 18:27:15 2020
    It charges over USB, and plays while charging, so you could just leave
    it plugged in. But it does seem to turn itself off after a period of inactivity, so that may be a killer in your application.

    John

    In article <X71AOFBmj$ufFwm6@ku.gro.lloiff>, bulleid@ku.gro.lioff
    says...

    In message <MPG.3a25a9e242216a7f98978d@news.eternal-september.org>, John Aldridge <jpsa@cantab.net> writes
    Another "not what you asked for" post, but might a cheap battery powered >bluetooth speaker do the trick? E.g.

    https://www.amazon.co.uk/dp/B01HTH3C8S

    Which I've just tried on my RPi4, but I don't see why it wouldn't work
    on a RPi3.

    Thanks.

    It says that it will play for 15 hours, but it gives no indication as to
    what the battery life is if it is turned on, but not playing (e.g.
    standby). Something else that I didn't mention in the original post, is
    that this would be on 7*24, although it may not be used at all on any
    given day. So anything battery powered is unlikely to be suitable.

    Adrian

    --- SoupGate-Win32 v1.05
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  • From Jim Jackson@3:770/3 to Adrian on Mon Nov 23 21:30:21 2020
    On 2020-11-23, Adrian <bulleid@ku.gro.lioff> wrote:
    In message <MPG.3a25a9e242216a7f98978d@news.eternal-september.org>, John Aldridge <jpsa@cantab.net> writes
    Another "not what you asked for" post, but might a cheap battery powered >>bluetooth speaker do the trick? E.g.

    https://www.amazon.co.uk/dp/B01HTH3C8S

    Which I've just tried on my RPi4, but I don't see why it wouldn't work
    on a RPi3.

    Thanks.

    It says that it will play for 15 hours, but it gives no indication as to
    what the battery life is if it is turned on, but not playing (e.g.
    standby). Something else that I didn't mention in the original post, is
    that this would be on 7*24, although it may not be used at all on any
    given day. So anything battery powered is unlikely to be suitable.


    I knocked up my own. Bought a little class D audio driver board like this ...

    https://www.hobbytronics.co.uk/mono-audio-amp

    wired power (5 volts) from the RPI GPIO pins, and wired a connection
    from the audio output as input, and hooked up a small lowpower 8ohm
    speaker. At 1 watt it will pull a little more than 0.2A from the RPI
    PSU, so make sure you have the power budget. But when it was quiet it
    pulls a lot less - sorry not measured it, but being class D it should be
    pretty low.

    --- SoupGate-Win32 v1.05
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  • From David Taylor@3:770/3 to Adrian on Tue Nov 24 08:22:09 2020
    On 23/11/2020 18:01, Adrian wrote:
    In message <MPG.3a25a9e242216a7f98978d@news.eternal-september.org>, John Aldridge <jpsa@cantab.net> writes
    Another "not what you asked for" post, but might a cheap battery powered
    bluetooth speaker do the trick? E.g.

    https://www.amazon.co.uk/dp/B01HTH3C8S

    Which I've just tried on my RPi4, but I don't see why it wouldn't work
    on a RPi3.

    Thanks.

    It says that it will play for 15 hours, but it gives no indication as to
    what the battery life is if it is turned on, but not playing (e.g.
    standby). Something else that I didn't mention in the original post, is
    that this would be on 7*24, although it may not be used at all on any
    given day. So anything battery powered is unlikely to be suitable.

    Adrian

    It has a physical on-off power switch. Just switched mine of after a
    long period of being switched off and it came up right away.

    --
    Cheers,
    David
    Web: http://www.satsignal.eu

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