When used with the CSB, some mixer applications exhibit a few quirks. Unmute and turn on the capture switch for any analog inputs that you want to record and adjust their faders. There is no material that is knowingly illegal here. The digital mute switches and faders often appear on the mixer application’s “Playback” or “Out” view. ALSA supports such a wavetable.

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This is a digital input for an external wavetable synthesizer.

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But some applications read the music digitally from the drive and send it to the PCM input of the mixer. Control Description Here is information on some of the controls, including the range for each fader, a description of the control’s use, and additional notes. For most setups the default, system-wide configuration is sufficient.

If, on the other hand, you want to hear a digital source, now is the time to unmute it and adjust its fader. Also, some non-mixer applications like music players have faders that control the mixer. Ensure that the capture switch is off for Master Digital to prevent a feedback loop. These duplicate faders don’t work; use the faders in the “Playback” view. Ensure that all other inputs are muted, then turn on the capture switch for any analog inputs except for Master Digital that you want to record and adjust their faders.

For some it’s fast, for some it’s slow. If you think that something might be an error, but you are not sure, you may want to add a comment to the CSB Mixer Comments page. See Recording While Monitoring to see how to use this control to monitor the audio being recorded.


Discussion about old PC hardware. Controls the input level for the digital data coming in via the ISA bus, usually from a an application that plays audio such as aplay.

OSS Sound Card List

This document will attempt to reduce that confusion. Unmute any digital sources that you want to record, and adjust their faders.

In theory they should all get along with each other, responding to your commands, and displaying the current state of the CSB’s mixer. All five faders that appear in the “Capture” view are duplicates of faders in the “Playback” view.

Therefore you should pay careful attention to the level meters in your recording application when using this method. Controls the input level for the digital data audip in from the internal FM synthesizer. Other options may be available depending on the specific card.

Then check alsamixer, as you should have a Master volume control. Note that some usb-audio devices do not have internal mixer controls.

No individual switching of stereo channels see above. This method of recording lets you hear the actual digital audio that is being sent to your recording application, allowing you to hear if any distortion is occurring.

CS4236B Mixer

But since you cannot hear the actual audio that will be recorded, it is important to pay close attention to the level meters on your recording application. If you will be recording more than one input, you may need to drop Capture Boost.


The faders may be duplicated on a “Capture” view, but you are better off using the “Playback” view because the duplicate faders don’t actually work in some mixer apps. Although they use the same driver, the CSB is more than a minor revision of the CS, which had no capture mixer or wavetable input.

But with the added flexibility comes added complexity, and sometimes a bit of confusion. Combines the analog output’s stereo channels into a monaural channel and routes it to the mono output, which might or might not be connected to your PC’s speaker.

Mixing Mixers To avoid confusion, it is probably best not to have more than one mixer application running at any time.

Details In this section we get into the nuts and bolts of the CSB mixer. Either of the above two items will create a feedback loop. If your microphone is so tired that it needs a kick to be heard in the capture mixer, you might try Analog Loopback capture instead of Mic capture. As mentioned above, gnome-volume-control automatically mutes some controls when its fader is reduced to zero, forcing you to manually unmute them later.

There are two ways of getting Linux drivers to work, you can either compile them into the kernel or build them separately as modules.