Flash AS3 - How to set high quality audio recording

Question

Currently, I\'m using

mic.rate = 100;

This only gives 63kbps.

Is it possible for Flash AS3 to set bitrate higher than 63kbps?

Answer 1

The bit rate (kbps) depends on:

1. the audio codec used (NellyMoser's Asao or Speex)
2. the Asao sample rate (mic.rate) / the Speex encode quality (mic.encodeQuality) .

NellyMoser's Asao

With Asao the sound will use from 11 to 88kbps depending on the sampling rate:

There's also a third factor with Nellymoser Asao:

When using the Nellymoser codec, one microphone might produce more bandwidth over against another.

Speex

With Speex the sound will use from 4 to 42kbps depending on the encoding quality (sampling rate is fixed at 16kHz with Speex):

From: http://audior.ec/blog/audio-quality-and-bitrate-in-flash-as3-web-apps/

These bitrates should reflect in the .flv where the audio is stored/recorded.