What is B2B

Toka · Apr 13, 2003, 04:41 AM

Can anyone please tell me what is B2B? it appeares in the Add Plugin|Passthrough in KX DSP?

10x in advance

**Eugene Gavrilov** · Apr 13, 2003, 06:10 PM

b2b plugin was supposed to be used for ac-3 passthru
however, it is not perfect at the moment

3532 release will include a better solution for ac-3 passthru for audigy and audigy2-based boards
in general, it is recommended not to use the effects listed in the 'passthru' submenu...

b2b means 'bit to bit'

(that is, the sound passes the DSP unaffected)

/Eugene

Max M. · Apr 13, 2003, 07:39 PM

well, b2b is not for ac3 pass-through only... Also this code being inserted somewhere on the wave path increases dynamic range and decreases distortion of 48000Hz playback... That is, "bit to bit" means signal that reaches ADC/SPDIF is identical to the one you play, while 48000Hz playback without "b2b" is somewhat "15.5 bit"... - all this for Audigy and 48kHz playback only (all other cases are worse anyway due to "resampling")

**Eugene Gavrilov** · Apr 16, 2003, 01:44 AM

anyway, the present 'b2b' plugin doesn't provide -real- bit-to-bit playback
there's a random error +/- 1 bit

/Eugene

Apr 13, 2003, 04:41 AM	#1
Toka DriverHeaven Newbie Join Date: Apr 2003 Posts: 6 Rep Power: 0	What is B2B Can anyone please tell me what is B2B? it appeares in the Add Plugin\|Passthrough in KX DSP? 10x in advance

Apr 13, 2003, 07:39 PM	#3
Max M. h/h member-shmember Join Date: Dec 2002 Location: Evil Empire Posts: 2,639 Rep Power: 69	well, b2b is not for ac3 pass-through only... Also this code being inserted somewhere on the wave path increases dynamic range and decreases distortion of 48000Hz playback... That is, "bit to bit" means signal that reaches ADC/SPDIF is identical to the one you play, while 48000Hz playback without "b2b" is somewhat "15.5 bit"... - all this for Audigy and 48kHz playback only (all other cases are worse anyway due to "resampling") __________________ Last edited by Max M.; Apr 13, 2003 at 07:51 PM.

Apr 13, 2003, 06:10 PM	#2
Eugene Gavrilov kX Project Lead Programmer and Coordinator Join Date: Dec 2002 Posts: 3,119 Rep Power: 75	b2b plugin was supposed to be used for ac-3 passthru however, it is not perfect at the moment 3532 release will include a better solution for ac-3 passthru for audigy and audigy2-based boards in general, it is recommended not to use the effects listed in the 'passthru' submenu... b2b means 'bit to bit' (that is, the sound passes the DSP unaffected) /Eugene

Apr 16, 2003, 01:44 AM	#4
Eugene Gavrilov kX Project Lead Programmer and Coordinator Join Date: Dec 2002 Posts: 3,119 Rep Power: 75	anyway, the present 'b2b' plugin doesn't provide -real- bit-to-bit playback there's a random error +/- 1 bit /Eugene