On Oct 2, 10:36=A0am, Vladimir Vassilevsky <nos...@nowhere.com> wrote:
> tomcee wrote:
> > Has anyone measured the audio performance of the Freescale Soundbite
> > audio board using simple pass through code?
>
> > I am interested primarily in THD, freq response, etc....at 16/24 bits,
> > 44.1/etc fs.
>
> I haven't measured it. However the board uses AK4556 codec in standard
> connection without any other signal conditioning circuitry. If the
> layout is correct, it should perform to the datasheet. That is ~100dB
> SNR, ~80dB THD+N; typical for consumer audio class.
>
> Vladimir Vassilevsky
> DSP and Mixed Signal Design Consultanthttp://www.abvolt.com

Thank you for the response.

I am aware of the ideal performance of the circuitry on the board but
was curious if anyone has measured actual performance.

TomC

tomcee wrote:
> Has anyone measured the audio performance of the Freescale Soundbite
> audio board using simple pass through code?
> 
> I am interested primarily in THD, freq response, etc....at 16/24 bits,
> 44.1/etc fs.

I haven't measured it. However the board uses AK4556 codec in standard 
connection without any other signal conditioning circuitry. If the 
layout is correct, it should perform to the datasheet. That is ~100dB 
SNR, ~80dB THD+N; typical for consumer audio class.

Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com

Has anyone measured the audio performance of the Freescale Soundbite
audio board using simple pass through code?

I am interested primarily in THD, freq response, etc....at 16/24 bits,
44.1/etc fs.

Thank you ,
TomC