i.MX6Q - audio output (Text to Voice)

[Sangraemelb]

Hi! I am working on i.MX6Q for Text to Audio.

The audio outputs are just to transfer audio input to the outputs.

I would like to generate the audio signal like below or any other way.

It doesn't have to be PWM signal outputs.

It reads a data and generate audio signals, not regenerate audio signals.

Regards,

Sangrae

[Sangraemelb]

Hi! 

Thank you for the info.

Is there any reference design?

It is hard to find information about MQS.

Regards,

Sangrae

[b36401]

We have no example for i.MX6. Sorry for the inconvenience.

[b36401]

i.MX6 MQS is used to generate medium quality audio via standard GPIO and produces PWM signal, fixed in amplitude and frequency, but varying in duty cycle. So additional an RC filter is needed at output, this will produce medium quality sound without an additional DAC.

[Sangraemelb]

Hi! 

Does that mean all GPIO can be configured as MQS_LEFT or MQS_RIGHT pin?

Or just PWM1 and PWM2 which can also be configured as GPIO?

Can I get more information about MQS?

It is really hard to find.

From i.MX 6Dual/6Quad Applications Processor Reference Manual / page 153

Regards,

Sangrae