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Author Topic: Negative bass & treble  (Read 6325 times)

Offline Mr Whippy

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Negative bass & treble
« on: February 20, 2009, 07:52:33 AM »
How come there isn't a negative bass or treble setting in Rockbox? I know about advanced EQ but it looks a bit too complicated. I don't actually need it seems spot on with EQ and bass disabled but may be useful for others.



Also does Rockbox have loudness feature? (at low levels bass is boosted, higher you go to 00dB less or no boosting going on)

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Offline Febs

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Re: Negative bass & treble
« Reply #1 on: February 20, 2009, 09:13:53 AM »
At least on some targets, the bass and treble controls are hardware-based, and so whether they allow both boost and cut depends on the hardware limitations.  For example, it is my recollection that on the iriver H100 and H300, the bass and treble feature are boost-only.  On the iPod Video, however, you can boost or cut, and also select a cut-off frequency.

There is no loudness feature in Rockbox, though you could simulate one by setting up a series of .cfg files with settings for volume, treble and bass.
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Offline dreamlayers

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Re: Negative bass & treble
« Reply #2 on: February 20, 2009, 10:54:57 AM »
Quote from: Febs on February 20, 2009, 09:13:53 AM
There is no loudness feature in Rockbox, though you could simulate one by setting up a series of .cfg files with settings for volume, treble and bass.
Actually, there is a hardware-based loudness setting on HWCODEC targets.  For example see the Archos Recorder V2 manual.
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Offline Febs

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Re: Negative bass & treble
« Reply #3 on: February 20, 2009, 02:02:00 PM »
Quote from: dreamlayers on February 20, 2009, 10:54:57 AM
Quote from: Febs on February 20, 2009, 09:13:53 AM
There is no loudness feature in Rockbox, though you could simulate one by setting up a series of .cfg files with settings for volume, treble and bass.
Actually, there is a hardware-based loudness setting on HWCODEC targets.  For example see the Archos Recorder V2 manual.

You're right!  I've never owned an Archos and it's been a long time since I read the Archos manual, so I had forgotten about that.
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Offline ZincAlloy

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Re: Negative bass & treble
« Reply #4 on: February 20, 2009, 05:18:01 PM »
Quote from: Mr Whippy on February 20, 2009, 07:52:33 AM

Also does Rockbox have loudness feature? (at low levels bass is boosted, higher you go to 00dB less or no boosting going on)



treble should be boosted as well. http://en.wikipedia.org/wiki/Equal-loudness_contour
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Offline Mr Whippy

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Re: Negative bass & treble
« Reply #5 on: February 22, 2009, 06:06:31 PM »
^ No bass boost on loudness is useful since at lower volumes the drivers may not have a suitable bass levels. If you boost treble then what you're literally doing is increasing volume.

For example listen to rock at a lower level and it seems thin, ramp it up and bass drivers start to give some kick.
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Offline Llorean

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Re: Negative bass & treble
« Reply #6 on: February 22, 2009, 06:09:55 PM »
Did you read the wikipedia article he linked? Even just looking at the picture should demonstrate that what he mentioned isn't simply increasing the volume, since the midrange is not boosted.
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Offline Mr Whippy

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Re: Negative bass & treble
« Reply #7 on: February 24, 2009, 08:11:30 AM »
I would not like loudness that increases bass & treble. I've got loudness function on my seperates, I've played with it plus treble. Bass boosting as volume is lowered works better IMO.
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Offline Llorean

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Re: Negative bass & treble
« Reply #8 on: February 24, 2009, 08:24:52 AM »
That's just your own ears, though. We should choose the standardized curve rather than writing the feature to meet a single user's personal preference.

If you want a Rockbox build customized to what you prefer, you can always build it yourself.
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Offline Mr Whippy

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Re: Negative bass & treble
« Reply #9 on: February 24, 2009, 04:41:06 PM »
Actually the bass boost loudness feature is quite common, and not just to "my request"
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Offline Llorean

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Re: Negative bass & treble
« Reply #10 on: February 24, 2009, 04:45:31 PM »
And you've done analysis or seen their source to know that it's not a standard loudness curve as described by the wikipedia article for each of them?
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Offline Mr Whippy

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Re: Negative bass & treble
« Reply #11 on: February 24, 2009, 06:12:14 PM »
Yes.  ;D
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Offline Llorean

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Re: Negative bass & treble
« Reply #12 on: February 24, 2009, 06:18:32 PM »
Can you provide links, then?
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Offline Mr Whippy

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Re: Negative bass & treble
« Reply #13 on: February 24, 2009, 06:24:27 PM »
I'd be breaking NDA :D
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Offline Llorean

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Re: Negative bass & treble
« Reply #14 on: February 24, 2009, 06:25:15 PM »
Look, if you just want to joke around take it someplace else. These are on-topic forums.
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