Bass and Treble

Bass and Treble increases or decreases the lower frequencies and higher frequencies of your audio independently. It behaves just like the bass, treble and volume controls on a domestic stereo system.

Accessed by: Effect > Bass and Treble...

Bass (dB)

The amount of gain (amplification above 0 dB or attenuation below 0 dB) to bass (low) frequencies. Set this to a positive amount to boost the bass, or to a negative amount to reduce the bass. Bass gain is applied to frequencies lower than 1000 Hz, with the most gain being applied to frequencies about 100 Hz or lower.

Treble (dB)

The amount of gain (amplification above 0 dB or attenuation below 0 dB) to treble (high) frequencies. Set this to a positive amount to boost the treble, or to a negative amount to reduce the treble. Treble gain is applied to frequencies higher than 1000 Hz, with the most gain being applied to frequencies above 10000 Hz.

Gain (dB)

This is like a "volume" control that adjusts the overall level. Applying boost to the bass or treble will tend to increase the overall level, especially when boosting the bass. As a result, the overall level may be pushed so high that it distorts (clips). Similarly, reducing the bass or treble may cause the overall level to be too quiet. This control allows the overall level to be adjusted to compensate for excessive change in the overall level.

• When adjusting the Gain, press Preview to hear how loud or quiet the resulting audio is.
• When audio sounds "tinny" or "nasal", this may be because the middle frequencies are too high. To counteract an excess of middle frequencies, try increasing both bass and treble and reducing the gain a little.

Gale 03Jan13: ToDo I think these technical details are unhelpful as presented, especially if this is "aimed at novices". People will be asking what the relationship of "half" is to the other Hz values presented above (100 Hz and 10000 Hz, which is about where the curves appear to flatten out, definitely not at 125 Hz and 8000 Hz). I understand shelf filter frequencies are usually given as half gain but unless you actually state what this is I think you should remove this.

• Steve 04Jan13: Although it is largely aimed at novice users I expect that experience users will also find it useful (I've already used it a couple of times myself), and the first thing that an experienced user wants to know is what it actually (precisely) does. These "technical details" provide the specification that an experienced user would want and expect to find in the manual. Perhaps we could present the information in a different form, for example as a frequency response graph (sometimes used in mixing desk manuals to show the response of channel Eq), but I think that the manual should give this information in one way or another.
• Gale: I support presenting this somewhere (though I agree with Peter it should be at the bottom in this case). I disagree with the inadequate presentation (which will completely confuse any novices who read it, for the reasons I stated). What percentage of our users knows what a "half gain" is? I looked in Wikipedia and there did not seem to be a simple anchor to link to. If you can rustle up a graph and text that looks as clean and as short as that in High Pass Filter, then that would probably be OK. If it gets too long or complex I think it will have to go to Wiki with a link from here to there.

Technical details

Bass and Treble is a two band Equalizer.

• The Bass control is a low-shelf filter with the half gain frequency at 250 Hz.
• The Treble control is a high-shelf filter with the half gain frequency at 4000 Hz.
• All controls have a gain range of +/- 15 dB.

Links

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