Hi Dianne, I am also struggling with this issue and would like to understand the limitations in current Android hardware.
My present understanding is that in on current Android phones there is a GSM/3G chip that 1. receives the *analogue* GSM/3G antenna signal 2. receives modem-like AT commands from Android to initiate phone calls, send text messages, etc. 3. routes the *analog* audio signal from the GSM/3G antenna to the amplifier/speaker or bluetooth headset. In such a setup, the audio signal of the phone call would exist in digital form within the GMS/3G chip, but it would be out of reach for the android OS. Outside the GMS/3G chip, the call signa would only exist in analog form - while being routed to the amplifier/speaker or to the bluetooth chip. In this case, the only hope for software access to the audio signal during a phone call would be a completely new design that implements the mobile phone functionality in software. Is that correct? Dr. Joachim Neumann P.S.: I would like to implement a hearing aid in software, see www.amplicell.com -- 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
