HL8548 i2s received voice amplitute is low

Dear all,

We are currently using module HL8548 in our voice communication devices. We connect HL8548 with an MCU and try to transfer speech via I2S interface of HL8548. However, at the remote site, the received voice is very low. It seems that the HL8548 module somehow limit the signal amplitute.

Could you please give me some advice to handle that problem.

Thank in advance


Kindly perform your test once again by correctly setting Transmit (Tx) and Receiver (Rx) Gain selection and along with that disable the Noise & Echo cancellation.
If still issue observed, please contact your Technical support in SWI to provide you the solution because this problem needs a detailed technical analysis

Thanks & Regards,

Hi Rex,

Thank for your suggestion. We have tried to turn off all noise and echo cancellation. The Tx and Rx gains were set to default value. But the amplitute is still low. Do you know how to contact technical support as we are not direct customer and the local support in Vietnam is very low.

Best regards,

Please contact your Technical support in SWI to provide you the solution.
you can refer to below mentioned link to get the authorized distributor details.

Thanks & Regards,