==================== Problem Description ====================
Android Development Board in hand, mic recording Go is i2s
I'm using the audio recording software provided by Android itself soundrecoder.apk
When recording, the small pointer that detects the sound seldom shakes, when my voice is high, I can record it, the sound is smooth, and then a high or can record!
The sound is intermittent, and it's very nasty!
I use the USB interface of the camera to record, (because the camera also with mic, just USB interface), recording sound very smooth! So the recording software is no problem
At the same time I also installed several other third-party recording software, the effect is the same
Directly in the chip next to the line, play back recording operation, the recorded good file playback, I must be the board of the sound adjustment to the maximum, the sound of the speaker to adjust to the maximum, lying on the speaker to hear the sound of music playback.
Check the register confirmation is the input mode, using the oscilloscope to view the digital analog waveform is also no problem
According to the above information, want to see the I2S recording using digital compression or analog compression? Where's the entrance? I do not know to go to the kernel drive where to find, hope to have a friend to help guide, thank you!
==================== Solution 1====================
If the recording is not normal, the oscilloscope looks at the signal input of the microphone.
Recommended to move to the hardware plate, to tell the truth, this section of hardware is really not a lot
==================== Solution 2====================
may be the driving problem, landlord take a good look
Android Development Board using I2S recording encounters problems
