https://community.nxp.com/t5/i-MX-Processors/Stereo-audio-in-using-i-MX6UL-and-Android-Things/m-p/607606#M91624 <HTML><HEAD></HEAD><BODY><P>We would like to implement an audio processing library on Android Things. For improved performance we want to use two microphones / audio inputs.</P><P>The two official Android Things development boards both feature the SGTL5000, which has stereo line in.</P><P></P><P>The Pico i.MX6UL (which I was trying out already) unfortunately does not have the line in wired to a physical jack. The Android Things framework also does not seem to recognize the line in input: there is only a single input device when querying AudioDeviceInfo.</P><P>Is it possible to modify the Android Things system image to expose the line in as inputs?</P><P></P><P>The Argon does feature a separate jack line in. Can someone confirm that the line in jack supports stereo audio? This is not entirely clear from the datasheet.</P><P>Is it also possible to access the line in with the Android Things framework?</P><P></P><P>Thank you,</P><P>Koenraad</P></BODY></HTML> Tue, 28 Feb 2017 15:49:20 GMT koenraadverheyd 2017-02-28T15:49:20Z https://community.nxp.com/t5/i-MX-Processors/Stereo-audio-in-using-i-MX6UL-and-Android-Things/m-p/607606#M91624 <HTML><HEAD></HEAD><BODY><P>We would like to implement an audio processing library on Android Things. For improved performance we want to use two microphones / audio inputs.</P><P>The two official Android Things development boards both feature the SGTL5000, which has stereo line in.</P><P></P><P>The Pico i.MX6UL (which I was trying out already) unfortunately does not have the line in wired to a physical jack. The Android Things framework also does not seem to recognize the line in input: there is only a single input device when querying AudioDeviceInfo.</P><P>Is it possible to modify the Android Things system image to expose the line in as inputs?</P><P></P><P>The Argon does feature a separate jack line in. Can someone confirm that the line in jack supports stereo audio? This is not entirely clear from the datasheet.</P><P>Is it also possible to access the line in with the Android Things framework?</P><P></P><P>Thank you,</P><P>Koenraad</P></BODY></HTML> Tue, 28 Feb 2017 15:49:20 GMT https://community.nxp.com/t5/i-MX-Processors/Stereo-audio-in-using-i-MX6UL-and-Android-Things/m-p/607606#M91624 koenraadverheyd 2017-02-28T15:49:20Z https://community.nxp.com/t5/i-MX-Processors/Stereo-audio-in-using-i-MX6UL-and-Android-Things/m-p/607607#M91625 <HTML><HEAD></HEAD><BODY><P>Is it possible to modify the Android Things system image to expose the line in as inputs?. ANSWER. No, </P><P style="margin-top: 0pt; margin-bottom: 0pt;"><SPAN style="color: black;">Google will host and update the image </SPAN><SPAN style="color: black; text-decoration: underline;">of the board that has been tested and approved,&nbsp; developers only can use the USER-SPACE drivers,&nbsp; provided by Google Services.</SPAN></P><P style="margin-top: 0pt; margin-bottom: 0pt;"></P><P>Can someone confirm that the line in jack supports stereo audio? This is not entirely clear from the datasheet.</P><P>Is it also possible to access the line in with the Android Things framework?</P><P>ANSWER.&nbsp; It is better to ask ARGON regarding their HW, but based on what it is in the Web Page and in the User Manual, I would said it is possible and Android Things should have the support to handle the Line In using the Audio Service in the user space driver.</P><P></P><P>Have a nice day sir!</P></BODY></HTML> Wed, 01 Mar 2017 14:17:53 GMT https://community.nxp.com/t5/i-MX-Processors/Stereo-audio-in-using-i-MX6UL-and-Android-Things/m-p/607607#M91625 jamesbone 2017-03-01T14:17:53Z