Upsampling with Shairport

PMC · August 5, 2020, 6:48pm

Hello,

Is there anyway to enable upsampling with Shairport input?

PMC · August 5, 2020, 7:38pm

I was reading here that SoX upsampling is compatible with Shairport-sync.

mikebrady/shairport-sync/blob/master/LIBSOXR.md


The Raspbian image at the time of writing is the `May 2016` version, with the release date of `2016-05-10`. It does not include `libsoxr`, but it is available as a package via `apt-get`.

Alternatively, `libsoxr` is very easy to compile. Here are very brief instructions to download, compile and install it:

* Install `cmake`. This is used in the building of libsoxr. On Linuxes such as Debian/Ubuntu/Raspbian:
```
# apt-get install cmake
```
On FreeBSD:
```
# pkg install cmake
```

* Download the `libsoxr source`:
```
$ git clone git://git.code.sf.net/p/soxr/code libsoxr
```
* `cd` into the `libsoxr` directory and start the build process:
```

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So it looks like it would be easy to do for someone who understands how to configure Linux.

Darmur · August 7, 2020, 2:57pm

For what reason you would like to up-sample?

PMC · August 7, 2020, 4:54pm

My DAC is optimized for 24/352.8 PCM

Darmur · August 7, 2020, 7:59pm

Did you try to enable resampling from Volumio playback options already?

PMC · August 7, 2020, 8:43pm

That only works with local file playback.