Problem solved. We didn't know about the android AudioRecord API which can record raw PCM up to 44khz. We ended up using 16-bit 11khz PCM encoded to WAV with the java speech api (we used the Tritonus library).
On Jun 3, 4:22 pm, Robert Peterson <[email protected]> wrote: > As a first step toward a speech recognition project, we wrote a simple > voice recording application based on the information in this > thread:http://groups.google.com/group/android-developers/browse_thread/threa... > > It is working; however, the audio is extremely poor -- too staticy for > our needs. > > As a comparison, we did a similar audio file captured with audacity > on a PC and it was much better. > > Has anyone been able to record high quality audio with the android dev > phone? > > According to the documentation of MediaRecorder, there is only one > audio encoder "AMR (Narrowband) audio codec" and three output > formats--3gpp, mpeg, and raw > AMR:http://developer.android.com/reference/android/media/MediaRecorder.html > > According to wikipedia, AMR encoding is only 8hz. Is there a better option > available.. perhaps a lower-level API compared to MediaRecorder? > > We are testing on Windows XP, with a Logitec USB microphone, eclipse > ganymede, and we are using all the defaults for an android 1.5 app (no > emulator command-line options.. we defined the sdcard in the avd > manager). --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
