How to imrove Speex quality?

Philmac · 08-10-2006, 05:18 PM

The person in my guild who runs our Ventrilo server has refused to change the codec to Speex because he says that GSM can be set to 44khz quality, but Speex can only be set to 22khz. Is this true? If not, how is it done? He buys the server from Typefrag.

mjgraf · 08-10-2006, 07:19 PM

Codec Format Description:
0 0 GSM 6.10 (8 KHz, 16 bit) 1625 bytes/sec
0 1 GSM 6.10 (11 KHz, 16 bit) 2210 bytes/sec
0 2 GSM 6.10 (22 KHz, 16 bit) 4420 bytes/sec
0 3 GSM 6.10 (44 KHz, 16 bit) 8905 bytes/sec
1 0 DSP Group TrueSpeech (8 KHz, 16 bit) 1056 bytes/sec
2 0 Lernout & Hauspie (8 KHz, 16 bit) 600 bytes/sec
3 0 Speex (8 KHz, 16 bit, 0 Qlty) 424 bytes/sec
3 1 Speex (8 KHz, 16 bit, 1 Qlty) 620 bytes/sec
3 2 Speex (8 KHz, 16 bit, 2 Qlty) 865 bytes/sec
3 3 Speex (8 KHz, 16 bit, 3 Qlty) 1110 bytes/sec
3 4 Speex (8 KHz, 16 bit, 4 Qlty) 1110 bytes/sec
3 5 Speex (8 KHz, 16 bit, 5 Qlty) 1502 bytes/sec
3 6 Speex (8 KHz, 16 bit, 6 Qlty) 1502 bytes/sec
3 7 Speex (8 KHz, 16 bit, 7 Qlty) 1922 bytes/sec
3 8 Speex (8 KHz, 16 bit, 8 Qlty) 1922 bytes/sec
3 9 Speex (8 KHz, 16 bit, 9 Qlty) 2384 bytes/sec
3 10 Speex (8 KHz, 16 bit, 10 Qlty) 3168 bytes/sec
3 11 Speex (16 KHz, 16 bit, 0 Qlty) 620 bytes/sec
3 12 Speex (16 KHz, 16 bit, 1 Qlty) 865 bytes/sec
3 13 Speex (16 KHz, 16 bit, 2 Qlty) 1110 bytes/sec
3 14 Speex (16 KHz, 16 bit, 3 Qlty) 1355 bytes/sec
3 15 Speex (16 KHz, 16 bit, 4 Qlty) 1698 bytes/sec
3 16 Speex (16 KHz, 16 bit, 5 Qlty) 2188 bytes/sec
3 17 Speex (16 KHz, 16 bit, 6 Qlty) 2678 bytes/sec
3 18 Speex (16 KHz, 16 bit, 7 Qlty) 3070 bytes/sec
3 19 Speex (16 KHz, 16 bit, 8 Qlty) 3560 bytes/sec
3 20 Speex (16 KHz, 16 bit, 9 Qlty) 4344 bytes/sec
3 21 Speex (16 KHz, 16 bit, 10 Qlty) 5324 bytes/sec
3 22 Speex (32 KHz, 16 bit, 0 Qlty) 669 bytes/sec
3 23 Speex (32 KHz, 16 bit, 1 Qlty) 1061 bytes/sec
3 24 Speex (32 KHz, 16 bit, 2 Qlty) 1306 bytes/sec
3 25 Speex (32 KHz, 16 bit, 3 Qlty) 1551 bytes/sec
3 26 Speex (32 KHz, 16 bit, 4 Qlty) 1943 bytes/sec
3 27 Speex (32 KHz, 16 bit, 5 Qlty) 2433 bytes/sec
3 28 Speex (32 KHz, 16 bit, 6 Qlty) 2874 bytes/sec
3 29 Speex (32 KHz, 16 bit, 7 Qlty) 3266 bytes/sec
3 30 Speex (32 KHz, 16 bit, 8 Qlty) 3756 bytes/sec
3 31 Speex (32 KHz, 16 bit, 9 Qlty) 4540 bytes/sec
3 32 Speex (32 KHz, 16 bit, 10 Qlty) 5520 bytes/sec

the highest speex setting is 3 32
the server owner/admin can change it in the hosting company control panel or thru a support ticket.

wadesworld · 08-11-2006, 02:58 AM

Personally, I think 44K for human speech is a massive waste of bandwidth. He's consuming more than 70K of bandwidth for voice. Not a big deal for users with lots of bandwidth to spare, but it's probably having a negative effect on some users with small upload bandwidth.

Of course since he made that argument, you're probably not likely to convince him that ANYTHING except the highest-possible bandwidth codec is acceptable.

mjgraf · 08-11-2006, 07:34 PM

Quote:

Originally Posted by wadesworld

Personally, I think 44K for human speech is a massive waste of bandwidth. He's consuming more than 70K of bandwidth for voice. Not a big deal for users with lots of bandwidth to spare, but it's probably having a negative effect on some users with small upload bandwidth.

Of course since he made that argument, you're probably not likely to convince him that ANYTHING except the highest-possible bandwidth codec is acceptable.

but it is GREAT for music streaming! hehe

08-10-2006, 05:18 PM	#1
Philmac Junior Member Join Date: Dec 2005 Posts: 4	How to imrove Speex quality? The person in my guild who runs our Ventrilo server has refused to change the codec to Speex because he says that GSM can be set to 44khz quality, but Speex can only be set to 22khz. Is this true? If not, how is it done? He buys the server from Typefrag.

08-11-2006, 02:58 AM	#3
wadesworld Senior Member Join Date: Nov 2005 Posts: 2,934	Personally, I think 44K for human speech is a massive waste of bandwidth. He's consuming more than 70K of bandwidth for voice. Not a big deal for users with lots of bandwidth to spare, but it's probably having a negative effect on some users with small upload bandwidth. Of course since he made that argument, you're probably not likely to convince him that ANYTHING except the highest-possible bandwidth codec is acceptable. Last edited by wadesworld; 08-11-2006 at 03:05 AM.

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08-10-2006, 07:19 PM	#2
mjgraf Senior Member Join Date: May 2005 Location: Some say in my own little world Posts: 15,502	Codec Format Description: 0 0 GSM 6.10 (8 KHz, 16 bit) 1625 bytes/sec 0 1 GSM 6.10 (11 KHz, 16 bit) 2210 bytes/sec 0 2 GSM 6.10 (22 KHz, 16 bit) 4420 bytes/sec 0 3 GSM 6.10 (44 KHz, 16 bit) 8905 bytes/sec 1 0 DSP Group TrueSpeech (8 KHz, 16 bit) 1056 bytes/sec 2 0 Lernout & Hauspie (8 KHz, 16 bit) 600 bytes/sec 3 0 Speex (8 KHz, 16 bit, 0 Qlty) 424 bytes/sec 3 1 Speex (8 KHz, 16 bit, 1 Qlty) 620 bytes/sec 3 2 Speex (8 KHz, 16 bit, 2 Qlty) 865 bytes/sec 3 3 Speex (8 KHz, 16 bit, 3 Qlty) 1110 bytes/sec 3 4 Speex (8 KHz, 16 bit, 4 Qlty) 1110 bytes/sec 3 5 Speex (8 KHz, 16 bit, 5 Qlty) 1502 bytes/sec 3 6 Speex (8 KHz, 16 bit, 6 Qlty) 1502 bytes/sec 3 7 Speex (8 KHz, 16 bit, 7 Qlty) 1922 bytes/sec 3 8 Speex (8 KHz, 16 bit, 8 Qlty) 1922 bytes/sec 3 9 Speex (8 KHz, 16 bit, 9 Qlty) 2384 bytes/sec 3 10 Speex (8 KHz, 16 bit, 10 Qlty) 3168 bytes/sec 3 11 Speex (16 KHz, 16 bit, 0 Qlty) 620 bytes/sec 3 12 Speex (16 KHz, 16 bit, 1 Qlty) 865 bytes/sec 3 13 Speex (16 KHz, 16 bit, 2 Qlty) 1110 bytes/sec 3 14 Speex (16 KHz, 16 bit, 3 Qlty) 1355 bytes/sec 3 15 Speex (16 KHz, 16 bit, 4 Qlty) 1698 bytes/sec 3 16 Speex (16 KHz, 16 bit, 5 Qlty) 2188 bytes/sec 3 17 Speex (16 KHz, 16 bit, 6 Qlty) 2678 bytes/sec 3 18 Speex (16 KHz, 16 bit, 7 Qlty) 3070 bytes/sec 3 19 Speex (16 KHz, 16 bit, 8 Qlty) 3560 bytes/sec 3 20 Speex (16 KHz, 16 bit, 9 Qlty) 4344 bytes/sec 3 21 Speex (16 KHz, 16 bit, 10 Qlty) 5324 bytes/sec 3 22 Speex (32 KHz, 16 bit, 0 Qlty) 669 bytes/sec 3 23 Speex (32 KHz, 16 bit, 1 Qlty) 1061 bytes/sec 3 24 Speex (32 KHz, 16 bit, 2 Qlty) 1306 bytes/sec 3 25 Speex (32 KHz, 16 bit, 3 Qlty) 1551 bytes/sec 3 26 Speex (32 KHz, 16 bit, 4 Qlty) 1943 bytes/sec 3 27 Speex (32 KHz, 16 bit, 5 Qlty) 2433 bytes/sec 3 28 Speex (32 KHz, 16 bit, 6 Qlty) 2874 bytes/sec 3 29 Speex (32 KHz, 16 bit, 7 Qlty) 3266 bytes/sec 3 30 Speex (32 KHz, 16 bit, 8 Qlty) 3756 bytes/sec 3 31 Speex (32 KHz, 16 bit, 9 Qlty) 4540 bytes/sec 3 32 Speex (32 KHz, 16 bit, 10 Qlty) 5520 bytes/sec the highest speex setting is 3 32 the server owner/admin can change it in the hosting company control panel or thru a support ticket.