Archived from groups: comp.sys.laptops (More info?)

HI there.
I have a IBM T42 with bluetooth enabled. I wanted to know how to
connect the Nokia Bluetooth Headset(wireless). HW 3 to the Laptop. I
can get the Laptop to detect the device and connect to it. but cant get
seem to get it started as in there is no sound coming though it.
Generally when you connect headphones to laptops the sound from the
speakers goes off once the headphones are connected . but nothing of
that happens here.
If anyone could help me to ge this working
Thanx
Gaurav Shah

Archived from groups: comp.sys.laptops (More info?)

Bluetooth wrote:
> HI there.
> I have a IBM T42 with bluetooth enabled. I wanted to know how to
> connect the Nokia Bluetooth Headset(wireless). HW 3 to the Laptop. I
> can get the Laptop to detect the device and connect to it. but cant
> get seem to get it started as in there is no sound coming though it.
> Generally when you connect headphones to laptops the sound from the
> speakers goes off once the headphones are connected . but nothing of
> that happens here.
> If anyone could help me to ge this working
> Thanx
> Gaurav Shah

All that bluetooth does is establish a communication link between two
bluetooth radios. Neither bluetooth radio alone knows anything about the
device to which it is attached or about the device attached to its
associated (linked) radio. Bluetooth has done its only job by
associating with another radio and establishing a *potentially* useable
method of communication. You can view bluetooth as nothing more than a
radio equivalent of a dumb wire cable that automatically plugs itself in
at each end to a matching plug on unknown devices.

So in the end, the computer must have the ability to send its digital
sound signals through its bluetooth radio, i.e., a driver or toggle to a
hardwired sound transmission option that includes its bluetooth radio.
That setting must be in the BIOS, the sound system, or the bluetooth
management system on the laptop. The headset likewise must be designed
to interpret its received radio signal as computer-generated stereo
sound. Simply because you have a bluetooth headset does not necessarily
imply that it can interpret a computer-generated sound signal as the
same kind of sound signal that is transmitted via bluetooth from a
cellular phone.

The universality of bluetooth communications means that any two
bluetooth radios can associate and initiate a common radio link, but
there is much more beyond the bluetooth radios that must be designed
into the devices to use that radio link for a given purpose. Nokia
designed the electronics in both the cell phone and the headset to
utilize the bluetooth radio link for the phone's sound functions. Those
electronics were not designed for general communication of sound from
any other device, like sound from a laptop. Likewise, the laptop
bluetooth radio can be used for any function for which the laptop has
the electronics designed to use its bluetooth radio for that given
function and for which another device has electronics designed to use
its associating radio for that given function.

To do what you want, you probably need a bluetooth adapter that fits
into the laptop headphone jack, and a matching bluetooth stereo headset
designed specifically for that adapter.

Q

Archived from groups: comp.sys.laptops (More info?)

Quaoar wrote:

> Bluetooth wrote:
>> HI there.
>> I have a IBM T42 with bluetooth enabled. I wanted to know how to
>> connect the Nokia Bluetooth Headset(wireless). HW 3 to the Laptop. I
>> can get the Laptop to detect the device and connect to it. but cant
>> get seem to get it started as in there is no sound coming though it.
>> Generally when you connect headphones to laptops the sound from the
>> speakers goes off once the headphones are connected . but nothing of
>> that happens here.
>> If anyone could help me to ge this working
>> Thanx
>> Gaurav Shah
>
> All that bluetooth does is establish a communication link between two
> bluetooth radios. Neither bluetooth radio alone knows anything about the
> device to which it is attached or about the device attached to its
> associated (linked) radio. Bluetooth has done its only job by
> associating with another radio and establishing a *potentially* useable
> method of communication. You can view bluetooth as nothing more than a
> radio equivalent of a dumb wire cable that automatically plugs itself in
> at each end to a matching plug on unknown devices.
>
> So in the end, the computer must have the ability to send its digital
> sound signals through its bluetooth radio, i.e., a driver or toggle to a
> hardwired sound transmission option that includes its bluetooth radio.
> That setting must be in the BIOS, the sound system, or the bluetooth
> management system on the laptop. The headset likewise must be designed
> to interpret its received radio signal as computer-generated stereo
> sound. Simply because you have a bluetooth headset does not necessarily
> imply that it can interpret a computer-generated sound signal as the
> same kind of sound signal that is transmitted via bluetooth from a
> cellular phone.
>
> The universality of bluetooth communications means that any two
> bluetooth radios can associate and initiate a common radio link, but
> there is much more beyond the bluetooth radios that must be designed
> into the devices to use that radio link for a given purpose. Nokia
> designed the electronics in both the cell phone and the headset to
> utilize the bluetooth radio link for the phone's sound functions. Those
> electronics were not designed for general communication of sound from
> any other device, like sound from a laptop. Likewise, the laptop
> bluetooth radio can be used for any function for which the laptop has
> the electronics designed to use its bluetooth radio for that given
> function and for which another device has electronics designed to use
> its associating radio for that given function.
>
> To do what you want, you probably need a bluetooth adapter that fits
> into the laptop headphone jack, and a matching bluetooth stereo headset
> designed specifically for that adapter.

You are greatly overstating the difficulties. The Nokia HDW-3 supports the
industry-standard "Handsfree" and "Headset" profiles. Other than the radio
and associated hardware needed to attach it to the PCI bus there is no
special "hardware" needed to support either of those profiles on the
laptop--it is handled purely in software by the Bluetooth driver stack. If
the driver stack supports either of those profiles then once paired the
headset should work.

The "Gotcha" is that Bluetooth audio plays through the Bluetooth profile,
not the regular sound driver, so that has to be selected in the audio
controls.

I'd never tried this so just for hohos I set up my Bluetooth headset on my
laptop. First step (assuming you're running Windows XP) is to go to "My
Bluetooth Places" and "Detect Hardware". Then set the headset discoverable
by whatever procedure its manual describes. Then it should autodetect and
will need a code, which should also be given in the manual. Once that's
done turn the headset on if it isn't already and click the icon to connect.
Once it's showing connected (facing green arrows on the icon) then go into
"Control Panel" and "Sound Devices" (or something like that--I'm at a
different machine right now), click the "Audio" tab, and select "Bluetooth
Audio Profile" instead of the default. It may be necessary to restart the
sound player (I had to with Winamp), but from that point on sound will play
through the headset, until you change the profile back to the default.

On the Sony HBH-300, the sound quality is other than being mono and playing
through a compressed channel intended for voice with a minuscule speaker
not bad sitting at the machine. In the next room though it starts sounding
like a scratched LP listened to through a garden hose.

> Q

--
--John
Reply to jclarke at ae tee tee global dot net
(was jclarke at eye bee em dot net)