Linux, has also led us to the incredibly complex world of Linux audio. There’s a problem with the state of Linux audio, error m options input alsa alsa support is not built in it’s not that it doesn’t always work. The issue is that it’s overcomplicated. This soon becomes evident if you sit down with a piece of paper and try to draw the relationships between the technologies involved with taking audio from a music file to your speakers: the diagram soon turns into a plate of knotted spaghetti.

This is a failure because there’s nothing intrinsically more complicated about audio than any other technology. It enters your Linux box at one point and leaves at another. An application can use anyone of these subsystems and in fact they do in order to provide wide appeal and compatibility. And application can literally take any route through the different components in order to arrive at the hardware. In our quest for bit-perfect audio, A reasonable approach to simplify the audio path is by minimizing the number of components through which the audio stream can possibly travel. A practical way to do this is to direct the application to use a single audio subsystem. In our case, restricting to ALSA looks like a good option since it is already included in the Debian BBB release.

Kernel that CAN can potentially be bypassed. This may not be an issue as modern applications do not have a need to use the older OSS v3 interface. MPD simply runs in the background playing music from its playlist. Client programs communicate with MPD to manipulate playback, the playlist, and the database. The default configuration for mpd -as installed for debian, uses ALSA.

The configuration file allow the selection of the output plugin. I’ve highlighted in red the important parameters. The name of the plugin. The name of the audio output.

It is visible to the client. Some plugins also use it internally, e. This is optional for most plugins. 32 bit floating point, -1. This setting will change all decoded audio to be converted to the specified format before being passed to the audio outputs.

Therefore do not use this parameter. Specifies whether this audio output is enabled when MPD is started. By default, all audio outputs are enabled. MPD will not send tags to this output. MPD attempts to keep this audio output always open. By default, the hardware mixer is used for devices which support it, and none for the others.

Specifies how replay gain is applied. Sets the device which should be used. This can be any valid ALSA device name. Note: the default device can be set in the ALSA configuration file. Sets the device’s buffer time in microseconds. Don’t change unless you know what you’re doing.

And DTMF codes. Sound effects as well as speech, by Rosie Daniel. Sketch to measure bus capacitance and suggest resistor values. My dell i3 laptop runs Ubuntu — the xmos device asks the pi to send the stream in 32 bit. Thanks for all error m options input alsa alsa support is not built in work and I can set up my CAS now and enjoy the music via the android phone, but I think it’s worth it. Which subsystem should I be using? And that’s on Arch Linux; supports one UDP or TCP connection at a time.

But you’ll also need the Error m options input alsa alsa support is not built in kernel error m options input alsa alsa support is not built in a complete solution. Tried the USB fix — but I will add that at some point. XFX HD7770 Black Edition and I am using the AMD Catalyst Driver from their website, that will print the version numbers for all components. Right above the textboxes where you have to enter the size?

This setting adjusts the size of internal decoded audio buffering. Changing this may have undesired effects. This setting controls the percentage of the buffer which is filled before beginning to play. Sets the device’s period time in microseconds. Don’t change unless you really know what you’re doing. ALSA is quite poor at doing so.

This wraps DSD samples in fake 24 bit PCM, and is understood by some DSD capable products, but may be harmful to other hardware. 2 may do the same thing. Here is a guide on setting up MPD that will illustrate some of the parameters discussed above . Both libsoxr and libsamplerate can be compiled into MPD so they may be already available in the MPD package. The MPD documentation lists 97 db SNR . Not sure how the two figures are related.