Mixed mode can only be used if the USB is connected to the audio conferencing computer and not the 3.5mm jacks. With this configuration, you can connect the 3.5mm audio-out jack to a transmitter, which can be used to connect to recording devices (for applications such as lesson capture audio or presentation recording) and hearing aids. In this mode, both near-end and far-end audio will be recorded.
The default signal provided by the HDL300 system’s output jack is microphone pickup that is echo-canceled. The signal is intended for the far-end conference site. However, when a local user connects a hearing aid or a recording device in the near-end room, the user will want to hear the far-end conversation as well as the near-end. Therefore, when mixed mode is activated, the HDL300 system will configure the auxiliary output jack so the user will receive both in-room (near-end) and remote audio (far-end) directly through the connected transmitter.
Mixed mode does not affect the auxiliary output levels. Additionally, it does not affect any other operation or function of the HDL300 system, including system volume or the quality of the audio.
For more information about using mixed mode, see our using the auxiliary ports article.
Last updated: January 31, 2019