Sound in raspberry pi

[openscoreboard]

I uninstall ALSA but "choppy sound" continue....

Any idea?

[mig-31]

Hi,

it sounds strange that you can play sound without ALSA. I think there is no difference between ARM an x86 platform in Linux: you need ALSA to play sound, because ALSA is a sound card driver.

[openscoreboard]

With out whitout ALSA in my rpi the sound is poor



A sample with ALSA installed

https://youtu.be/D7Ph_IJqpUo

[mig-31]

Do you use pulse audio in Rasberrian?

[Fred vS]

it sounds strange that you can play sound without ALSA. I think there is no difference between ARM an x86 platform in Linux: you need ALSA to play sound, because ALSA is a sound card driver.

uos uses PortAudio library that can deal directly with sound-cards.
But, via config in uos, you may ask to PortAudio to use OSS, or ALSA or PulseAudio.

A sample with ALSA installed

https://youtu.be/D7Ph_IJqpUo

There is no sound in your video, same for example you give before.
That way it is difficult to understand what is "poor" sound...

Fre;D

[Fred vS]

With out whitout ALSA in my rpi the sound is poor

Have you try to use /uos/examples/deviceinfos.lpi ?

It will show you all the devices recognized by PortAudio.

Maybe, you may try then with a other config:

Code: Pascal  [Select][+][-]

1.  function AddIntoDevOut(Device: LongInt; Latency: CDouble;
2.       SampleRate: LongInt; Channels: LongInt; SampleFormat: LongInt ; FramesCount: LongInt ): LongInt;

     ////// Add a Output into Device Output
    //////////// Device ( -1 is default device )  : Try to change here
    //////////// Latency  ( -1 is latency suggested ) )
    //////////// SampleRate : delault : -1 (44100)
    //////////// Channels : delault : -1 (2:stereo) (0: no channels, 1:mono, 2:stereo, ...)  : Try to change here
    //////////// SampleFormat : default : -1 (1:Int16) (0: Float32, 1:Int32, 2:Int16)  : Try to change here
    //////////// FramesCount : default : -1 (= 65536)  : Try to change here
    //  result :  Output Index in array    -1 = error
    /// example : OutputIndex1 := AddIntoDevOut(-1,-1,-1,-1,0);

Fre;D

[openscoreboard]

https://youtu.be/51ajloZmOrs

Now work fine!!!
Thanks!!!

[Fred vS]

Now work fine!!!
Thanks!!!

Super, I am very happy for you. 

Could you add in attachment or give a link of the uos-libraries that you use for Raspberry pi?
So other people can use it too.

Many thanks.

Fre;D

[openscoreboard]

Rpi work with raspbian (https://www.raspberrypi.org/downloads/raspbian/)

Im use raspbian Jessie (\usr\lib\arm-linux-gnu-eabihf\)

 

Thanks Fred!!


libmpg123...

[openscoreboard]

libportaudio...

[openscoreboard]

and libsndfile

[Fred vS]

@ openscoreboard.

Many thanks for libraries.

I will add it in /uos/lib/linux/arm/

Fre;D