Bitrate

[brother-james]

Hi all, just a curiosity! If I need how can I know at wich bitrate ableton leave out the sound?

There's the output sample rate in the preference but there is not the out bitrate. It shows only record bitrate, so where I can set that?

tnx a lot

[Tone Deft]

bit rate = sample rate * bit depth.

the bit rate you're thinking of has to do with perceptual encoders like mp3s which have nothing to do with Live's audio engine. bit rate isn't something you have to worry about with Live, just sample rate and bit depth.

what sample rate and bit depth? there have been lots of threads on that, even one this week, search.

[brother-james]

Sorry exact I wanna know about bit depth! I will looking for

Tnx!

By the way, if I use a digital output from my interface and I'm using a plug-in like albino at wich bit depht live delivery the signal?
And If I have an audio track recorded at 16 bit? It will delivery at wich bitdepth?

[doghouse]

using a plug-in like albino at wich bit depht live delivery the signal?
And If I have an audio track recorded at 16 bit? It will delivery at wich bitdepth?

Most plugins default to 24 bit these days, it's usually set in the preferences. You can always use files of lower bit depths in a project at a higher bit depth but there is no improvement in resolution. If your project is 24 bit you can use 8 bit, 12 bit, 16 bit, 20 bit, 24 bit.

[longjohns]

bit depth of rendering is chosen in the render dialog box

bit depth of audio leaving live should be controlled by your soundcard drivers.

[leedsquietman]

With regards to plugins most are 32 or 64 bit (Sonalksis and nowadays a large number use internal 64 bit float), and can use sampling rates up to 192 Khz (some up to 384 Khz), but typically use 44.1 or 96 Khz sampling rates internally or default to whatever you chose - a good example is Guitar Rig by Native Instruments, in high res mode it's internal sample rate is 96 Khz vs 48 Khz with high res mode turned off. It's subtle, but when I've bounced down a file at 96 Khz, compared to 44.1 from Guitar Rig (with hi-res turned on), I have noticed a small but audible difference in it's quality. Synths which use internal 64 bit float, such as Arturia, while they claim it helps them with their modelling to eliminate aliasing below 16 Khz, often comes with a larger CPU hit.

This is then bounced down to whatever you render at, so if you render at 24/44.1, plugin sounds are bounced down to that. This is one reason why some people advocate if you use a lot of vsts in your tracks high sampling rates for recording means less internal bouncing down/internal dithering which can help reduce aliasing artifacts, although this is another argument for another debate and certainly, older plugins and the majority of modern ones with decent anti-aliasing built in, sound fine at 24/44.1 and ultimately 16/44.1 when dithered down for CD.