From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: From: "Sowmya Gattupalli" To: bluez-devel@lists.sourceforge.net Subject: Re: [Bluez-devel] SCO transparent transmission In-Reply-To: <4436772F.6030300@csr.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_22309_21090851.1144469559376" References: <9ec07a230604041044j6b1b91f4ue25b44f2ed6f7c55@mail.gmail.com> <4436772F.6030300@csr.com> Sender: bluez-devel-admin@lists.sourceforge.net Errors-To: bluez-devel-admin@lists.sourceforge.net Reply-To: bluez-devel@lists.sourceforge.net List-Unsubscribe: , List-Id: BlueZ development List-Post: List-Help: List-Subscribe: , List-Archive: Date: Sat, 8 Apr 2006 09:42:39 +0530 ------=_Part_22309_21090851.1144469559376 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hey Steven... For a CSR USB chip when the SCO mapping is over HCI is it possible to chang= e the voice settings to send PCM samples over the air? On 4/7/06, Steven Singer wrote: > > Sowmya Gattupalli wrote: > > On 4/4/06, Israel Gu=EDo wrote: > >> example, with 0x0063 as voice settings. I have tried it with my > Bluetooth > > How did u use CVSD when transmitting over sco?? [...] > > He was quite clear that he'd used voice settigns 0x0063. The last two > bits indicate transparent coding and not CVSD. > > Israel, you need to be sure you're sending data at exactly the right > average data rate. SCO links are synchronous and if you don't provide > data at exactly the right rate then something somewhere in the > system will have to insert or delete samples. > > It would also be helpful if you stated what chip and firmware version > you were using. > > - Steven > -- > > > To access the latest news from CSR copy this link into a web browser: > http://www.csr.com/email_sig.php > > > ------------------------------------------------------- > This SF.Net email is sponsored by xPML, a groundbreaking scripting > language > that extends applications into web and mobile media. Attend the live > webcast > and join the prime developer group breaking into this new coding > territory! > http://sel.as-us.falkag.net/sel?cmdlnk&kid=110944&bid$1720&dat=121642 > _______________________________________________ > Bluez-devel mailing list > Bluez-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bluez-devel > ------=_Part_22309_21090851.1144469559376 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hey Steven...
For a CSR USB chip when the SCO mapping is over HCI is it possible to change the voice settings to send PCM samples over the air?

On 4/7/06, Steven Si= nger <steven.singer@csr.com= > wrote:
Sowmya Gattupalli wrote:
> On 4/4/06, Israel Gu=EDo < israzar@gmail.com> wrote:
>> example, with 0x0063 as voice = settings. I have tried it with my Bluetooth
> How did u use CVSD when= transmitting over sco?? [...]

He was quite clear that he'd used voi= ce settigns 0x0063. The last two
bits indicate transparent coding and not CVSD.

Israel, you need = to be sure you're sending data at exactly the right
average data rate. S= CO links are synchronous and if you don't provide
data at exactly the ri= ght rate then something somewhere in the
system will have to insert or delete samples.

It would also be h= elpful if you stated what chip and firmware version
you were using.
<= br>        - Steven
--

To access the latest news from CSR copy this link into a web browser:&nbs= p;  http://www.csr.com/email_sig.p= hp


-------------------------------------------------------This SF.Net email is sponsored by xPML, a groundbreaking scripting langua= ge
that extends applications into web and mobile media. Attend the live we= bcast
and join the prime developer group breaking into this new coding t= erritory!
http://sel.as-us.falkag.net/sel?cmdlnk&kid=110944&bid$1720&dat= =121642
_______________________________________________
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Blu= ez-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-devel

------=_Part_22309_21090851.1144469559376-- ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <4436772F.6030300@csr.com> From: Steven Singer MIME-Version: 1.0 To: bluez-devel@lists.sourceforge.net Subject: Re: [Bluez-devel] SCO transparent transmission References: <9ec07a230604041044j6b1b91f4ue25b44f2ed6f7c55@mail.gmail.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Sender: bluez-devel-admin@lists.sourceforge.net Errors-To: bluez-devel-admin@lists.sourceforge.net Reply-To: bluez-devel@lists.sourceforge.net List-Unsubscribe: , List-Id: BlueZ development List-Post: List-Help: List-Subscribe: , List-Archive: Date: Fri, 07 Apr 2006 15:29:03 +0100 Sowmya Gattupalli wrote: > On 4/4/06, Israel Gu=EDo wrote: >> example, with 0x0063 as voice settings. I have tried it with my Blueto= oth > How did u use CVSD when transmitting over sco?? [...] He was quite clear that he'd used voice settigns 0x0063. The last two bits indicate transparent coding and not CVSD. Israel, you need to be sure you're sending data at exactly the right average data rate. SCO links are synchronous and if you don't provide data at exactly the right rate then something somewhere in the system will have to insert or delete samples. It would also be helpful if you stated what chip and firmware version you were using. - Steven --=20 To access the latest news from CSR copy this link into a web browser: ht= tp://www.csr.com/email_sig.php ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: From: "Sowmya Gattupalli" To: bluez-devel@lists.sourceforge.net Subject: Re: [Bluez-devel] SCO transparent transmission In-Reply-To: <9ec07a230604041044j6b1b91f4ue25b44f2ed6f7c55@mail.gmail.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_12208_17784144.1144214623796" References: <9ec07a230604041044j6b1b91f4ue25b44f2ed6f7c55@mail.gmail.com> Sender: bluez-devel-admin@lists.sourceforge.net Errors-To: bluez-devel-admin@lists.sourceforge.net Reply-To: bluez-devel@lists.sourceforge.net List-Unsubscribe: , List-Id: BlueZ development List-Post: List-Help: List-Subscribe: , List-Archive: Date: Wed, 5 Apr 2006 10:53:43 +0530 ------=_Part_12208_17784144.1144214623796 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hey Israel, How did u use CVSD when transmitting over sco?? U mean u used some sort of function to convert the voice you input from /dev/dsp into CVSD codec?? Can u also throw some light on CVSD and SCO... I mean how are u transmittin= g the packets over SCO?? Soumya On 4/4/06, Israel Gu=EDo wrote: > > Hi. > > I'm trying to write an app for voice transmission between two laptops. > When using CVSD, the communication performs ok. However, I would need to > transmit the PCM samples in a transparent mode, for after receiving a voi= ce > frame, I must process the samples. > > I have read in Bluetooth 2.0 specification that this can be done, for > example, with 0x0063 as voice settings. I have tried it with my Bluetooth > 2.0+EDR dongles but it doesn't work properly. I transmit continuously a > frame with values 0x01 through 0x30, but in the receiver side and using > hcidump, I see that a brust of 0 is inserted in the middle of some frames > and there are hops in the sequence. For instance, I send 0x00 0x01 0x02 0= x03 > 0x04 .... 0x29 0x30, but I receive 0x2e 0x2f 0x30 0x00 0x01 0x02 0x2f 0x3= 0 > 0x00 0x01..... > > Have any of you tested it? Is there any solution to make what I try? > > Thanks. > ------=_Part_12208_17784144.1144214623796 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hey Israel,
How did u use CVSD when transmitting over sco?? U mean u us= ed some sort of function to convert the voice you input from /dev/dsp into = CVSD codec??
Can u also throw some light on CVSD and SCO... I mean how = are u transmitting the packets over SCO??

Soumya

On 4/4/06, Israel Gu=EDo <israzar@gmail.com> wrote:
Hi.

I'm trying to write an app for voice transmission between two laptops. When using CVSD, the communication performs ok. However, I would need to transmit the PCM samples in a transparent mode, for after receiving a voice frame, I must process the samples.

I have read in Bluetooth 2.0 specification that this can be done, for example, with 0x0063 as voice settings. I have tried it with my Bluetooth 2.0+EDR dongles but it doesn't work properly. I transmit continuously a frame with values 0x01 through 0x30, but in the receiver side and using hcidump, I see that a brust of 0 is inserted in the middle of some frames and there are hops in the sequence. For instance, I send 0x00 0x01 0x02 0x03 0x04 .... 0x29 0x30, but I receive 0x2e 0x2f 0x30 0x00 0x01 0x02 0x2f 0x30 0x00 0x01.....

Have any of you tested it? Is there any solution to make what I try?

Thanks.

------=_Part_12208_17784144.1144214623796-- ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <9ec07a230604041044j6b1b91f4ue25b44f2ed6f7c55@mail.gmail.com> From: "=?ISO-8859-1?Q?Israel_Gu=EDo?=" To: bluez-devel@lists.sourceforge.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_25867_11980523.1144172677239" Subject: [Bluez-devel] SCO transparent transmission Sender: bluez-devel-admin@lists.sourceforge.net Errors-To: bluez-devel-admin@lists.sourceforge.net Reply-To: bluez-devel@lists.sourceforge.net List-Unsubscribe: , List-Id: BlueZ development List-Post: List-Help: List-Subscribe: , List-Archive: Date: Tue, 4 Apr 2006 19:44:37 +0200 ------=_Part_25867_11980523.1144172677239 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi. I'm trying to write an app for voice transmission between two laptops. When using CVSD, the communication performs ok. However, I would need to transmi= t the PCM samples in a transparent mode, for after receiving a voice frame, I must process the samples. I have read in Bluetooth 2.0 specification that this can be done, for example, with 0x0063 as voice settings. I have tried it with my Bluetooth 2.0+EDR dongles but it doesn't work properly. I transmit continuously a frame with values 0x01 through 0x30, but in the receiver side and using hcidump, I see that a brust of 0 is inserted in the middle of some frames and there are hops in the sequence. For instance, I send 0x00 0x01 0x02 0x0= 3 0x04 .... 0x29 0x30, but I receive 0x2e 0x2f 0x30 0x00 0x01 0x02 0x2f 0x30 0x00 0x01..... Have any of you tested it? Is there any solution to make what I try? Thanks. ------=_Part_25867_11980523.1144172677239 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi.

I'm trying to write an app for voice transmission between two laptops. When using CVSD, the communication performs ok. However, I would need to transmit the PCM samples in a transparent mode, for after receiving a voice frame, I must process the samples.

I have read in Bluetooth 2.0 specification that this can be done, for example, with 0x0063 as voice settings. I have tried it with my Bluetooth 2.0+EDR dongles but it doesn't work properly. I transmit continuously a frame with values 0x01 through 0x30, but in the receiver side and using hcidump, I see that a brust of 0 is inserted in the middle of some frames and there are hops in the sequence. For instance, I send 0x00 0x01 0x02 0x03 0x04 .... 0x29 0x30, but I receive 0x2e 0x2f 0x30 0x00 0x01 0x02 0x2f 0x30 0x00 0x01.....

Have any of you tested it? Is there any solution to make what I try?

Thanks.
------=_Part_25867_11980523.1144172677239-- ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel