Receive-side audio processing for calls in a web conferencing client

An apparatus, comprising:

• one or more network interfaces;
• a processor coupled to the one or more network interfaces and configured to execute one or more processes;
• and
• a memory configured to store a process that is executable by the processor, the process when executed configured to:
• receive an audio signal from a sending device;
• detect a particular telephony audio cue present in the audio signal, wherein the particular telephony audio cue has similar characteristics of noise that is to be removed by a noise removal operation;
• preserve the particular telephony audio cue in the audio signal throughout the noise removal operation on the audio signal by automatically bypassing, responsive to detecting the particular telephony audio cue, the noise removal operation during one or more time intervals of the audio signal that correspond to the detected particular telephony audio cue, while continuing to apply the noise removal operation during other time intervals of the audio signal that do not contain the particular telephony audio cue;
• and
• cause an enhanced audio signal to be produced in conjunction with the noise removal operation, wherein the enhanced audio signal includes the particular telephony audio cue to be delivered to a receiver device.

A tangible, non-transitory, computer-readable medium storing program instructions that cause a device to execute a process comprising:

• receiving an audio signal from a sending device;
• detecting a particular telephony audio cue present in the audio signal, wherein the particular telephony audio cue has similar characteristics of noise that is to be removed by a noise removal operation;
• preserving the particular telephony audio cue in the audio signal throughout the noise removal operation on the audio signal by automatically bypassing, responsive to detecting the particular telephony audio cue, the noise removal operation during one or more time intervals of the audio signal that correspond to the detected particular telephony audio cue, while continuing to apply the noise removal operation during other time intervals of the audio signal that do not contain the particular telephony audio cue;
• and
• causing an enhanced audio signal to be produced in conjunction with the noise removal operation, wherein the enhanced audio signal includes the particular telephony audio cue to be delivered to a receiver device.