Hi guys,
Here I am to share my problems again. Please, read if you have time.
I have bluez 4.41 installed on my 2.6.30 system and I?m trying to play
a .wav file using aplay on my bluetooth headset but the sound I hear
on the headset has failures, noises. Also, I'm trying to record my
voice on the same headset, but the result is terrible.
Following are the steps I'm taking:
- My bluetooth dongle is recognized as (hciconfig -a):
hci0: Type: USB
BD Address: 00:10:60:30:1A:2D ACL MTU: 384:8 SCO MTU: 64:8
UP RUNNING PSCAN
RX bytes:10886 acl:31 sco:0 events:395 errors:0
TX bytes:1961 acl:26 sco:0 commands:139 errors:0
Features: 0xff 0xff 0x8f 0xfe 0x9b 0xf9 0x00 0x80
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH HOLD SNIFF PARK
Link mode: SLAVE ACCEPT
Name: 'debian-0'
Class: 0x4a0204
Service Classes: Networking, Capturing, Telephony
Device Class: Phone, Cellular
HCI Ver: 2.0 (0x3) HCI Rev: 0x7a6 LMP Ver: 2.0 (0x3) LMP Subver: 0x7a6
Manufacturer: Cambridge Silicon Radio (10)
- I started the simple-agent:
Agent registered
- Then I create the device using:
dbus-send --system --type=method_call --print-reply --dest=org.bluez
/org/bluez/2705/hci0 org.bluez.Adapter.CreateDevice
string:00:08:1B:05:0A:0F
- Next step is to connect the headset:
dbus-send --system --type=method_call --print-reply --dest=org.bluez
/org/bluez/2705/hci0/dev_00_08_1B_05_0A_0F org.bluez.Headset.Connect
- Now I need to configure ~/.asoundrc with my bluetooth device:
pcm.bluetooth {
type bluetooth
device "00:08:1B:05:0A:0F"
profile "auto"
}
- At this point I have my setup ready to play and record audio (at
least I should have). Then I start aplay:
aplay -D bluetooth -f S16_LE myaudio.wav
It works, but the audio I hear has a lot of noise and choppiness. I
read on bluez wiki that choppiness is expected, but is this the
scenario where it should happen?
- I also tryied arecord -D bluetooth -f S16_LE result.wav
I was unable to understand the audio from result.wav. Hundreds of
following messages were found on syslog:
Jun 19 13:03:16 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 39169
Jun 19 13:03:16 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 144
Jun 19 13:03:16 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 89
Jun 19 13:03:16 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 5888
Jun 19 13:03:17 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 32513
Jun 19 13:03:17 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 19969
Jun 19 13:03:17 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 65025
Am I doing something wrong? Can anybody point me a way to fix this problem?
Thanks in advance.
Douglas
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Douglas Lopes Pereira
Sent: 19 June, 2009 19:02
To: [email protected]
Subject: Audio failures on bluetooth headset
Hi guys,
Here I am to share my problems again. Please, read if you have time.
I have bluez 4.41 installed on my 2.6.30 system and I?m trying to play
a .wav file using aplay on my bluetooth headset but the sound I hear
on the headset has failures, noises. Also, I'm trying to record my
voice on the same headset, but the result is terrible.
Following are the steps I'm taking:
- My bluetooth dongle is recognized as (hciconfig -a):
hci0: Type: USB
BD Address: 00:10:60:30:1A:2D ACL MTU: 384:8 SCO MTU: 64:8
UP RUNNING PSCAN
RX bytes:10886 acl:31 sco:0 events:395 errors:0
TX bytes:1961 acl:26 sco:0 commands:139 errors:0
Features: 0xff 0xff 0x8f 0xfe 0x9b 0xf9 0x00 0x80
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH HOLD SNIFF PARK
Link mode: SLAVE ACCEPT
Name: 'debian-0'
Class: 0x4a0204
Service Classes: Networking, Capturing, Telephony
Device Class: Phone, Cellular
HCI Ver: 2.0 (0x3) HCI Rev: 0x7a6 LMP Ver: 2.0 (0x3) LMP Subver: 0x7a6
Manufacturer: Cambridge Silicon Radio (10)
- I started the simple-agent:
Agent registered
- Then I create the device using:
dbus-send --system --type=method_call --print-reply --dest=org.bluez
/org/bluez/2705/hci0 org.bluez.Adapter.CreateDevice
string:00:08:1B:05:0A:0F
- Next step is to connect the headset:
dbus-send --system --type=method_call --print-reply --dest=org.bluez
/org/bluez/2705/hci0/dev_00_08_1B_05_0A_0F org.bluez.Headset.Connect
- Now I need to configure ~/.asoundrc with my bluetooth device:
pcm.bluetooth {
type bluetooth
device "00:08:1B:05:0A:0F"
profile "auto"
}
> Did you try the .asoundrc example in /etc/alsa?
- At this point I have my setup ready to play and record audio (at
least I should have). Then I start aplay:
aplay -D bluetooth -f S16_LE myaudio.wav
> Did you try aplay -D plug:bluetooth -f S16_LE myaudio.wav?
It works, but the audio I hear has a lot of noise and choppiness. I
read on bluez wiki that choppiness is expected, but is this the
scenario where it should happen?
- I also tryied arecord -D bluetooth -f S16_LE result.wav
I was unable to understand the audio from result.wav. Hundreds of
following messages were found on syslog:
Jun 19 13:03:16 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 39169
Jun 19 13:03:16 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 144
Jun 19 13:03:16 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 89
Jun 19 13:03:16 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 5888
Jun 19 13:03:17 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 32513
Jun 19 13:03:17 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 19969
Jun 19 13:03:17 debian kernel: hci_scodata_packet: hci0 SCO packet for
unknown connection handle 65025
Am I doing something wrong? Can anybody point me a way to fix this problem?
Thanks in advance.
Douglas
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