We have a product using TLV320AIC3111 with I2S input and Analog Output to Microphone and speaker.
The product is experiencing echo - it seems the speaker is feeding back audio heard to the microphone. Are there any
recommendations on how to deal with this? Looking around it seems there is mention of Automatic Echo Cancellation in PurePath studio, but E2E indicates that in fact is not supported.
Are there other features/registers we can use to avoid this?
The speaker and microphone are close together, perhaps 1-2cm and when a call is received, the end user on the other side of the Bluetooth connection can hear their own voice (playing on the local speaker) back at them. Reducing the volume helps but obviously is not desirable. Muting the microphone when the speaker is playing may be helpful.