TAS2563: TAS2563

Ian Wang

Part Number: TAS2563

Hi Sir,

According tuning file as below ppc3, we found "first play tone" will clear to hear sound small to large. After 1st play, it will be normal.

Would you pls advise what we can tune to improve it? (attack time?)

Thanks, Ian.

over 3 years ago

0 Luis Fernando Rodriguez S. over 3 years ago

TI__Guru* 84915 points

Hi, Ian,

We will take a look at this and will provide a reply as soon as possible.

Best regards,
Luis Fernando Rodríguez S.

0 Ivan Salazar over 3 years ago

TI__Guru* 95385 points

Hi Ian,

You mean you get "fade-in" effect during first tone play, but subsequent tones don't have this effect?

Let me verify this on my setup.

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

0 Ian Wang over 3 years ago in reply to Ivan Salazar

TI__Mastermind 25095 points

Hi Ivan,

Would you pls have some update?

Thanks,Ian.

0 Ivan Salazar over 3 years ago in reply to Ian Wang

TI__Guru* 95385 points

Hi Ian,

I'm checking this on the speaker protection algorithm, we may need to feed some dummy values during startup to provide initial values, increasing attack time may affect overall protection functionality during broad audible band content playback.

I can provide some further updates earlier next week.

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

0 Ian Wang over 3 years ago in reply to Ivan Salazar

TI__Mastermind 25095 points

Hi Ivan,

May I have pls help it?

Thanks, Ian.

0 Ivan Salazar over 3 years ago in reply to Ian Wang

TI__Guru* 95385 points

Hi Ian,

This fade-in at the first play is due to Excursion Speed control. Default value is 100ms, which is most likely the fade-in you see in your tests.

You can reduce this value from Protection Tuning control, but please fine tune-it for continuous playback and different audio content. This is changing excursion protection so you should test thoroughly to make sure it does not affect overall device and protection operation.

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

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TAS2563: TAS2563