问题
I successfully record sound on an Android 2.3.4 device (full settings are: AudioSource.MIC + 44100Hz + AudioFormat.CHANNEL_IN_MONO + AudioFormat.ENCODING_PCM_16BIT).
I also properly write the PCM data to a WAV file.
The problem is that there are those noises which makes the recording terrible.
The attached file shows exactly what I mean. Notice the obvious spikes.
I have tested the same recording (the music in the attached file) with some sound recording apps on the market, and they record in a perfect way, without noises at all - how is it done? Is it a setting I should set (I use AudioRecord)? Should I manually filter those noises with some algorithm? What should I be looking for?
If the attached file is not downloading for some reason or link is simply broken just let me know with a comment.
Thanks!
Edit #1:
I'm with Galaxy S2.
回答1:
I think 44100Hz is too much for your phone capability, and in general, for all phones capabilities: mobile phones are not HI-FI.
Try with 8000Hz.
Then you can change this value until you find an acceptable recording quality.
来源：https://stackoverflow.com/questions/10495779/sound-record-tickling-ticks-noises-spikes