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Topic ClosedBoosting the volume of an MP3 file
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dwill123 View Drop Down
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Points: 4460 		Direct Link To This Post Posted: March 12 2007 at 20:24
Just use mp3Gain.  Simply put all of your mp3s into a folder and run this tool and taa-daa all normalized.
 
 
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goose View Drop Down
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Points: 4097 		Direct Link To This Post Posted: March 12 2007 at 20:54
Originally posted by MikeEnRegalia MikeEnRegalia wrote:

Use Winamp instead of the WMP ... then calculate Replay Gain for the mp3s (media library -> right-click album -> send to -> Calculate Replay Gain, when done choose "save as album"). Then all you have to do is to configure Winamp to use replace gain (preferences -> General -> Playback), and all the files will have a constant volume.The other option is to re-rip the files using a ripping software (like CDex) which allows to normalize the audio during extraction. But this can mean a loss of quality ... I prefer the approach of Replay Gain, which essentially just determines the peak level of the files and then stores that info in the file, so that the volume can be adjusted  automatically during playback.Of course Replay Gain doesn't have an effect on playback on a portable player (at least I don't know any which support it) ... but my Creative Zen has volume normalization, maybe your player also has such a feature.

Probably not of that much use to anyone reading, but I'm pretty sure Rockbox suports Replaygain and it can run on iAudio, iPod, iRiver and Archos players.
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MikeEnRegalia View Drop Down
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Points: 21116 		Direct Link To This Post Posted: March 13 2007 at 03:10
@dwill123:

mp3gain simply applies Replay Gain to the files ... with that in mind I wouldn't recommend to use it on all your files at once. Replay Gain distinguishes Album Gain and Track Gain, and in order for that to work you must apply the algorithm to one album at a time (in Winamp right click an album in the media library and choose "Send To -> Calculate Replay Gain", when it's done choose "Save as *Album*").

If you just apply it to all the tracks you'll over-boost tracks that are intentionally more quiet than other tracks - like interludes or intros.

@goose:

Nice, I didn't know about Rockbox. It's not for me though ... because a) I have a Creative player and b) I need the digital rights management for Napster.Embarrassed


Edited by MikeEnRegalia - March 13 2007 at 03:10
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Bob Greece View Drop Down
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Points: 1823 		Direct Link To This Post Posted: March 13 2007 at 08:47

Audacity can really change the amplitude of MP3 files - not just the replay gain. I rip the files in losless format, change the amplitude and then compress them with to MP3.

Another great thing about Audacity is that it has enables me to rip cassette tapes to MP3 format.
 
It's free too!


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MikeEnRegalia View Drop Down
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Points: 21116 		Direct Link To This Post Posted: March 13 2007 at 08:54
CDex can do it all at once ... Get the proper tags, rip the tracks to WAV, normalize the volume (amplitude) and convert them to mp3 (or any other format, including FLAC) and delete the WAV.
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Big Ears View Drop Down
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Points: 727 		Direct Link To This Post Posted: March 19 2007 at 09:01
While we're on the subject of digital music files, how do you play them from a laptop through an amplifier. This would overcome the variable volume/power problem.  My laptop only has a 3.5mm jack plug socket for headphones (ie. no line out phono sockets) - or am I mistaken? Are computer sound outputs disguised?  
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MikeEnRegalia View Drop Down
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Points: 21116 		Direct Link To This Post Posted: March 19 2007 at 09:05
The headphone socket *is* the line out!Tongue

It's true ... doesn't sound too bad actually, but if you're looking for quality sound you should get an USB sound card. If you also happen to be a guitarist, then the Line6 GuitarPort is just what you need!
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Big Ears View Drop Down
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Points: 727 		Direct Link To This Post Posted: March 19 2007 at 09:08
I know, but it's inferior quality.
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Man Erg View Drop Down
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Points: 7456 		Direct Link To This Post Posted: March 19 2007 at 09:08
Originally posted by Big Ears Big Ears wrote:

While we're on the subject of digital music files, how do you play them from a laptop through an amplifier. This would overcome the variable volume/power problem.  My laptop only has a 3.5mm jack plug socket for headphones (ie. no line out phono sockets) - or am I mistaken? Are computer sound outputs disguised?  


Obviously your amp hasn't got a USB socket so;
Try buying a jack adaptor.A specialist hi-fi hardware shop should be able to supply you with the correct connecter/adaptor or advise you professionally.

I used to sample music into my sampler from my portable cd player by this method. I have a lead that had a 1/4 inch jack at one end and a 1/2 inch jack at the other.

Edited by Man Erg - March 19 2007 at 09:09

Do 'The Stanley' otherwise I'll thrash you with some rhubarb.
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MikeEnRegalia View Drop Down
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Points: 21116 		Direct Link To This Post Posted: March 19 2007 at 09:31
^ are you two guys sure you know what you're talking about? Many high end studio sound interfaces use USB ... it's the de facto standard for external PC sound cards.

BTW: Of course the amp is still connected with 1/4 or 1/" inch jacks to the audio interface ... and the audio interface is connected to the PC via USB.Smile

Here's an example: http://www.m-audio.com/products/en_us/AudiophileUSB-main.html Big%20smile


Edited by MikeEnRegalia - March 19 2007 at 09:58
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Big Ears View Drop Down
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Points: 727 		Direct Link To This Post Posted: March 20 2007 at 13:04
Are you saying that you can connect a laptop to an amplifier via a USB (on the computer) to a jack or phono (on the amplifier)? I would welcome confirmation of this.  
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MikeEnRegalia View Drop Down
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Points: 21116 		Direct Link To This Post Posted: March 20 2007 at 13:23
^ yes, see the link to M-Audio. The only problem is that these sound cards are a bit pricey ... but the audio quality is really good. If you rip the CDs using lossless formats then it easily compares to using a real CD player.
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Bob Greece View Drop Down
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Points: 1823 		Direct Link To This Post Posted: March 21 2007 at 03:41

I have just started using WinAmp. It seems a lot better than Windows Media Player. Thanks for the tip-off Mike.

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