Wave File Players

In this section

Purpose

The Wave File Player device allows you to play .wav media files that have been uploaded to a NioNode in the project. In order to use the media files, you must import them into NWare via the Media tab, or upload them directly to the NioNode using FTP.

If you import the files using the Media tab, they will be available in the /mnt/hda4/project folder on the NioNode when the project is deployed. When you use the Wave File Player, you can simply type the file name directly into the File Name box without specifying a path.

If you upload the files using ftp, they will be available in the /var/ftp folder on the NioNode. When you use the Wave File Player, prefix the file name with ftp/ in the File Name box. You do not need to specify a path unless you have stored the files in a sub folder on the NioNode.

For information on uploading files using ftp, see Copying media files to the NION in the NION CobraNet Hardware Manual or NION Dante Hardware Manual.

There are different variants of the device for mono and stereo audio and different sample rates.

Notes:

The sample rate for the player or recorder device must be set to a multiple of the project sample rate. For example, if the system sample rate is 48KHz (which is typical), then realistic values for the sample rate are 48000, 24000, or 12000.
The interpolation value (for the player device) or decimation value (for the recorder device) when multiplied with the sample rate must equal the project sample rate. For example, if the sample rate is set to 12000 and the project sample rate is 48000, then the correct setting for interpolation or decimation is 4x.
When you choose a player or recorder device with a particular sample rate, the interpolation or decimation is set automatically by NWare, according to the project sample rate you are using.
The number of Wave File Players and Wave File Recorders you can add to your project is limited by the available memory on the NioNode that is hosting the project. If you add too many of these devices, an error will be displayed when the project is deployed. The memory usage is affected by a number of factors, including the sample rate and whether mono or stereo is selected.
When the project is deployed, media files must be located on the same node that hosts the NWare device playing the files. If the files are located on a different node, you will not be able to play them. We recommend that you manually assign the device playing the files to a role and deploy that role to the node that will host the media files.