Immersive audio rendering

A method comprising:

• determining, by a processor, whether an audio signal is a first type of content format;
• in response to a determination that the audio signal is the first type of the content format, routing the audio signal to a low-frequency extension and a stereo to multichannel upmix to increase a number of channels associated with the audio signal to generate a resulting audio signal;
• in response to a determination that the audio signal is not the first type of content format, determining whether the audio signal is a second type of content format;
• in response to a determination that the audio signal is the second type of the content format, routing the audio signal to another low-frequency extension to generate the resulting audio signal;
• and
• generating an output stereo signal based on the resulting audio signal.

A non-transitory computer readable medium having stored thereon machine readable instructions, the machine readable instructions, when executed, cause a processor to:

• determine a type of content format of an audio signal from a plurality of types of content formats;
• based on the type of the content format from the plurality of types of the content formats, determine whether to route the audio signal to a low-frequency extension or another low-frequency extension;
• in response to a determination that the audio signal includes the type of the content format that includes the low-frequency extension, route the audio signal to a first route that includes stereo to multichannel upmix to increase a number of channels associated with the audio signal to generate a resulting audio signal;
• and
• generate an output stereo signal based on the resulting audio signal.