delay between speex_echo_capture and speex_echo_playback

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Hello,

I have been attempting to implement speex aec in an Android HAL without
success. In my debugging, I have decided to time a pulse through the system
and I am seeing a large delay between passing audio to Audioflinger and
getting it back to play. This is causing a delay around 90ms between
speex_echo_capture and speex_echo_playback. The documentation states that
the async api will insert a 2 frame delay (40ms in this case). To me this
seems like my issue. The delay is simply longer than the two frames that
the async api is using.

Is my thinking correct? Is there anything I can do?

Thanks!

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<div dir=3D"ltr">Hello,<div><br></div><div>I have been attempting to implem=
ent speex aec in an Android HAL without success. In my debugging, I have de=
cided to time a pulse through the system and I am seeing a large delay betw=
een passing audio to Audioflinger and getting it back to play. This is caus=
ing a delay around 90ms between speex_echo_capture and speex_echo_playback.=
 The documentation states that the async api will insert a 2 frame delay (4=
0ms in this case). To me this seems like my issue. The delay is simply long=
er than the two frames that the async api is using.=C2=A0<div><br></div><di=
v>Is my thinking correct? Is there anything I can do?</div><div><br></div><=
div>Thanks!</div></div></div>

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