Return-Path: Message-ID: <3F2E5F7D.50702@csr.com> Date: Mon, 04 Aug 2003 14:28:29 +0100 From: Steven Singer MIME-Version: 1.0 To: Marcel Holtmann CC: =?ISO-8859-1?Q?Riikka_Jylh=E4?= , BlueZ Mailing List Subject: Re: [Bluez-users] USB-drivers References: <000201c35a85$b18576d0$ae2ae682@ac.tut.fi> <1060001774.955.4.camel@pegasus> In-Reply-To: <1060001774.955.4.camel@pegasus> Content-Type: text/plain; charset=us-ascii; format=flowed List-ID: Marcel Holtmann wrote: > My CSR dongles only support linear PCM (2's complement) with 8 or 16 bit > for input. See output of "hciconfig hci0 voice". That shouldn't be the whole truth. The full list should be: Linear: 16 bit with up to 7 MSBs ignored, or 8 bit 1's complement, 2's complement or sign-magnitude Logarithmic: 8 bit u-law or A-law That's the full set of host formats allowed by the BT 1.1 HCI spec. The sample rate is fixed at 8 kHz (as defined by the Bluetooth spec). I wouldn't recommend sending mp3s over a SCO link. Wavs should be fine provided they're resampled at 8 kHz, you set the voice setting to the appropriate data format, you skip the header and you get the rate matching right. (Anyone else reading this thread, particularly in the archive, should look at the thread Rikka started called "About Scotest" for several important caveats from me about SCO data). - Steven -- ********************************************************************** The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer. **********************************************************************