[Jamie M]

On 1/26/2012 11:27 PM, josephkk wrote:
On Wed, 25 Jan 2012 17:12:40 -0800, Jamie wrote:

On 1/23/2012 10:03 PM, josephkk wrote:
Not to be too much of a jerk, but just exactly how to you disambiguate the
received noise signal from the reflected corrective signal?


Hi,

Turn off the drive signal and listen periodically, like a sensorless
BLDC motor maybe?

cheers,
Jamie


Think that through really carefully. What would be the user response to
that?

Hi,

Ok maybe a better idea is to do a continuous FFT of the actual
headphone voltages and then compare this to the "desired" FFT from the
digital audio signal (ie MP3) and then generate a correction signal to
adjust the output voltage.

cheers,
Jamie



?-)