Creating mp3 sound samples

Is garageband easy to use to take a CD and create 30 second mp3 sounds samples for a website?

you could use GB, but my preference for editing audio is an Audio Editor:
http://www.bulletsandbones.com/GB/GBFAQ.html#audioeditors

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Minimum size/maximum quality MP3 sound file balance

My first objective when creating MP3 files is to compress the sound file as much as possible, and I don't want any file to exceed 1MB, if possible. (One exception was compressing a 30 minute poetry recitation into a 1.8 MB file.) That turned out okay, but music is another story. So, I'd like to know more about how to strike a satisfactory balance between size and quality. For the iTunes MP3 import settings,this means choosing between (1) STEREO BIT RATES (16kbps to 320 kbps), (2) QUALITY (Low to Highest), and (3) CHANNEL (mono or stereo)
In the past, I have always chosen mono, but it now occurs to me that the quality enhancement of stereo might justify the larger files caused by slightly higher kbps settings. That's just one example. Anyway, I'd like to read an article on the trade-offs between the variables that iTunes provides. Any
suggestions?

Stereo Bit Rate is what people are talking about when they say that a song is XXX kbps. (kbps is a measure of bit-rate, a measure of kilobytes per second).
Stereo v. Mono really depends on what type of song you are sampling, and what you are listening to it on. For virtually all music recorded after 1970, though, you'd probably want to use Stereo.
Also, you might get some mileage by making sure that you are importing the music at 41.100 kHz rather than using Auto or 48.000. (This is basically the "speed" at which the music is sampled. The faster its sampled, the more information it contains. It makes it higher quality, but also higher file size. You probably won't notice too much difference between 41.1 and 48.)
Finally, you should also check the Variable Bit Rate box. This will help reduce the file size, as the bit rate will be reduced during silences and other times where the song doesn't need more information.
As for the overall Bit Rate, its really subjective. Your best bet is to just try it at a few different levels and decide which is best for you.

Mp3 sounds bad on iphone

I am new to iTunes and iPhone 4.
I have an existing collection of cd's, that I did copy into MP3, while using 320kbits sampling rate (I only remember the number).
If I listen to them, I can hear that the quality is a bit lessor then the original. But, I can live with it, as I will never listen to the MP3 on my hifi set.
I did drag the MP3 out of explorer, into a iTunes folder, which seems to be coupled to my iPhone 4. That resulted in creating, more then one album per cd, but I found out how to repair that (lot of work).
Then I started to listen on the iPhone with the apple headphone set.
My first thought was, pretty clear, but... I miss something.
I could not put a finger on it. So I plugged in my old Sony headset.
It sounded better, but I was still missing things.
Then I heard it.
It sounded like the high tones and basses where cutoff.
And there where the music should be very rich in detail, it sounded cluttered up.
There where a violin stops playing, you normally here it fade out to 0, but now it stopped half way the fading process.
Then I tried to listen through the PC speakers.
I loaded iTunes and what seems to be, loading music from the iPhone and played via the speakers. Meanwhile I compared it, by listening to the original MP3, while using Windows Media Player 11.
I could hear a huge difference. The music via Media Player was more open, No high tones or basses cutoff, no cluttered, but detail, and fading out, did not cutoff either.
Via iTunes, I heard exactly, what I heard on my iPhone.
Cutoff high and basses, no detail, all cluttered up, and cutoff fade outs.
When I look under Info, it says that the MP3 was created at 320kbs.
My question is, why has an MP3 get such a low quality on my iPhone?
BTW, I did not change any settings in iTunes.

I have just tried something out:
I used iTunes. Made several MP3 with 320kbps setting, and the same numbers and settings for AAC.
What I heard was, that the MP3 sounds a bit muffled when played in windows media player and iTunes.
The AAC sounded a bit better then the MP3 with Windows Media player, but it sounded high pitched in itunes.
I could here more detail with the cd.
I listened to the Zauberflöte.
Very odd, when put on the iPhone, I only see the numbers once. but which one?

Creating a sound from an array of numeric values and playing it on speakers

How do I create take a sound I have stored as an array (or could be an arraylist if needed) of numeric values (at the moment as doubles) whiten my program and output it to speakers? I am using blueJ.
for example (0, 0.1, 0.4, 0.8, 0.9, 1, 0.8, 0.6, 0.3, 0.1, etc...) would be a very high frequency sin wave.
Edited by: alan2here on Feb 6, 2008 11:28 AM

I stumbled upon this thread with a question somewhat related:
I've recorded a wave file from microphone. But what I would like is an array of numbers in the same way alan said. I'm also working on my own project involving signal processing (i'm trying to do speech recognition).
I can't really find a nice way of getting that array of numbers. I've tried to find out how wave file stores it's data, and directly read from the File object, but i figured there should be an easier way...
I used this code to read the sound:
*     SimpleAudioRecorder.java
*     This file is part of jsresources.org
* Copyright (c) 1999 - 2003 by Matthias Pfisterer
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* - Redistributions of source code must retain the above copyright notice,
*   this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
*   notice, this list of conditions and the following disclaimer in the
*   documentation and/or other materials provided with the distribution.
|<---            this code is formatted to fit into 80 columns             --->|
import java.io.IOException;
import java.io.File;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.TargetDataLine;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.AudioFileFormat;
public class SimpleAudioRecorder
extends Thread
     private TargetDataLine          m_line;
     private AudioFileFormat.Type     m_targetType;
     private AudioInputStream     m_audioInputStream;
     private File               m_outputFile;
     public SimpleAudioRecorder(TargetDataLine line,
                         AudioFileFormat.Type targetType,
                         File file)
          m_line = line;
          m_audioInputStream = new AudioInputStream(line);
          m_targetType = targetType;
          m_outputFile = file;
     /** Starts the recording.
         To accomplish this, (i) the line is started and (ii) the
         thread is started.
     public void start()
          /* Starting the TargetDataLine. It tells the line that
             we now want to read data from it. If this method
             isn't called, we won't
             be able to read data from the line at all.
          m_line.start();
          /* Starting the thread. This call results in the
             method 'run()' (see below) being called. There, the
             data is actually read from the line.
          super.start();
     /** Stops the recording.
         Note that stopping the thread explicitely is not necessary. Once
         no more data can be read from the TargetDataLine, no more data
         be read from our AudioInputStream. And if there is no more
         data from the AudioInputStream, the method 'AudioSystem.write()'
         (called in 'run()' returns. Returning from 'AudioSystem.write()'
         is followed by returning from 'run()', and thus, the thread
         is terminated automatically.
         It's not a good idea to call this method just 'stop()'
         because stop() is a (deprecated) method of the class 'Thread'.
         And we don't want to override this method.
     public void stopRecording()
          m_line.stop();
          m_line.close();
     /** Main working method.
         You may be surprised that here, just 'AudioSystem.write()' is
         called. But internally, it works like this: AudioSystem.write()
         contains a loop that is trying to read from the passed
         AudioInputStream. Since we have a special AudioInputStream
         that gets its data from a TargetDataLine, reading from the
         AudioInputStream leads to reading from the TargetDataLine. The
         data read this way is then written to the passed File. Before
         writing of audio data starts, a header is written according
         to the desired audio file type. Reading continues untill no
         more data can be read from the AudioInputStream. In our case,
         this happens if no more data can be read from the TargetDataLine.
         This, in turn, happens if the TargetDataLine is stopped or closed
         (which implies stopping). (Also see the comment above.) Then,
         the file is closed and 'AudioSystem.write()' returns.
     public void run()
               try
                    AudioSystem.write(
                         m_audioInputStream,
                         m_targetType,
                         m_outputFile);
               catch (IOException e)
                    e.printStackTrace();
     public static void main(String[] args)
          if (args.length != 1 || args[0].equals("-h"))
               printUsageAndExit();
          /* We have made shure that there is only one command line
             argument. This is taken as the filename of the soundfile
             to store to.
          String     strFilename = args[0];
          File     outputFile = new File(strFilename);
          /* For simplicity, the audio data format used for recording
             is hardcoded here. We use PCM 44.1 kHz, 16 bit signed,
             stereo.
          AudioFormat     audioFormat = new AudioFormat(
               AudioFormat.Encoding.PCM_SIGNED,
               44100.0F, 16, 2, 4, 44100.0F, false);
          /* Now, we are trying to get a TargetDataLine. The
             TargetDataLine is used later to read audio data from it.
             If requesting the line was successful, we are opening
             it (important!).
          DataLine.Info     info = new DataLine.Info(TargetDataLine.class, audioFormat);
          TargetDataLine     targetDataLine = null;
          try
               targetDataLine = (TargetDataLine) AudioSystem.getLine(info);
               targetDataLine.open(audioFormat);
          catch (LineUnavailableException e)
               out("unable to get a recording line");
               e.printStackTrace();
               System.exit(1);
          /* Again for simplicity, we've hardcoded the audio file
             type, too.
          AudioFileFormat.Type     targetType = AudioFileFormat.Type.WAVE;
          /* Now, we are creating an SimpleAudioRecorder object. It
             contains the logic of starting and stopping the
             recording, reading audio data from the TargetDataLine
             and writing the data to a file.
          SimpleAudioRecorder     recorder = new SimpleAudioRecorder(
               targetDataLine,
               targetType,
               outputFile);
          /* We are waiting for the user to press ENTER to
             start the recording. (You might find it
             inconvenient if recording starts immediately.)
          out("Press ENTER to start the recording.");
          try
               System.in.read();
          catch (IOException e)
               e.printStackTrace();
          /* Here, the recording is actually started.
          recorder.start();
          out("Recording...");
          /* And now, we are waiting again for the user to press ENTER,
             this time to signal that the recording should be stopped.
          out("Press ENTER to stop the recording.");
          try
               System.in.read();
          catch (IOException e)
               e.printStackTrace();
          /* Here, the recording is actually stopped.
          recorder.stopRecording();
          out("Recording stopped.");
     private static void printUsageAndExit()
          out("SimpleAudioRecorder: usage:");
          out("\tjava SimpleAudioRecorder -h");
          out("\tjava SimpleAudioRecorder <audiofile>");
          System.exit(0);
     private static void out(String strMessage)
          System.out.println(strMessage);
}Daniel

Extracting portions of the timeline from iMovie to create a 'Sound File'

Hello
I recently used my Cannon GL2 as a field recorder to record 16 bit audio sound effects.
I'd like to extract certain portions of the timeline to create various 'Sound Files' which will be used later (as sound effects), in either iMovie, or FCE HD.
In iMovie HD, the only method I'm familiar with to extract a portion of the timeline to a 'Sound File', is to FIRST export that portion to a Quicktime File. Then I use 'Sound Studio 2.2.4' to import the Quicktime File. In Sound Studio, I can then create either an AIFF File, or Wav File.
From there, I open iTunes, and import the Wav File. Now I convert that Wav File to an MP3 (if I need to compress the size of the file).
I know I can import Raw DV Video Files (Captures), into Garage Band, but then I can't export that edited project into a Sound File.
But I do know I can use Garage Band to edit (EQ), a portion of the timeline, then Export that portion (as I explained above). But I'm still going through some extra steps .....
With all I'm mentioned, perhaps I need to get another software program in order to eliminate a step on my way to exporting a portion of a Video timeline from either iMovie, or FCE, and get straight to creating a sound file suitable for later import back into FCE, or iMovie?
Thanx for your comments
Mike

Hey Piero
Comestah?
I'm an Italiano too My Granparents are from Bari
Well yes thank you - that certainly answered part of my question
Now I wonder if I can extract just a 'PORTION' of the timeline? I tried to insert division points without actually cutting out all the unwanted stuff, and highlighted just that portion, but the Audio Extract process reverts back to extracting the ENITIRE timeline. So I guess I'd have to actually cut and delete all the unwanted parts, then 'save as' to that NEW iMovie project reflecting just that edit in order to extract JUST that audio piece?
I wonder if the process is more precise in FCE?
Gracias
Mike

Create mp3 version

When right clicking on a "purchased acc" which is not protected, create mp3 version is a selection. This is also available in the advanced tab at top beside the help tab. When I select this option from either location, it looks like it is downloading a file and an alert is sounded when finished but it does not put a duplicate file as an mp3 in the library. Am I missing a step?

I don't think you missed a step. Here's the procedure: http://support.apple.com/kb/HT1550
Take a look at your music library in the list view. Sort by the date added column. If that column is not there, add it by using the View Menu -> View Options. Your new MP3 should be at the top of the list.

Create MP3 from Internet radio?

Hello All,
Is it possible to record audio from the internet (Like BBC iPlayer) to create mp3's of programmes and concerts?
I can't seem to find a way of doing it and wondered if anyone knew how.
Thanks,
Mark

Install SoundFlower, make it the Macs' default output in the Sound prefpanel, make it the Input in Logic. Now you can play anything (iTunes, internetaudio) and Logic can record it: In Logic, hit record, switch to your internetbrowser and start whatever playback you want to record.
Just did this yesterday, works fine.
http://www.pure-mac.com/audio.html#soundflower

Mixing MP3 sound

I have been trying to find a way to mix (not merge) multiple mp3 sources. JMF itself cannot do this, and the only example I can find of JavaSound (AudioConcat example) assumes the inputs are sampled source. This fails with a compressed format like MP3 which returns a frame size of -1 and causes an array size exception in the AudioConcat example:
MixingAudioInputStream.read(byte[], int, int): begin
MixingAudioInputStream.read(byte[], int, int): requested length: 4096
MixingAudioInputStream.read(byte[], int, int): channels: 2
MixingAudioInputStream.read(byte[], int, int): frame size: -1
MixingAudioInputStream.read(byte[], int, int): sample size (bytes, storage size): 0
MixingAudioInputStream.read(byte[], int, int): big endian: false
MixingAudioInputStream.read(byte[], int, int): encoding: MPEG1L3
Exception in thread "main" java.lang.NegativeArraySizeException
     at MixingAudioInputStream.read(MixingAudioInputStream.java:185)
     at java.io.SequenceInputStream.read(Unknown Source)
     at java.io.SequenceInputStream.read(Unknown Source)
     at java.io.InputStream.read(Unknown Source)
     at com.sun.media.sound.WaveFileWriter.writeWaveFile(Unknown Source)
     at com.sun.media.sound.WaveFileWriter.write(Unknown Source)
     at javax.sound.sampled.AudioSystem.write(Unknown Source)
     at AudioConcat.main(AudioConcat.java:289)Does anyone have example code to mix mp3 sound?
Thanks!

It may come to that... but this was intended to be an applet where the sound files are coming from the server, mixed in the applet (according to user control), and output to the user's sound card. The size of the WAV files might make this impractical, but it might be worth a try.
I am wondering about the mp3 processing... is not the data uncompressed and at some point back in sampled form? I am just not sure where in the chain this happens, and if the samples can then be mixed in the usual way.

I am trying to create mp3 version of itune songs. I have gone through the preference sequence to be mp3 encoder but this is not having any effect. I have also tired from file tab to create a version but this is not available to action

I am trying to create mp3 version of itune songs. I have gone through the preference sequence to be mp3 encoder but this is not having any effect. I have also tired from file tab to create a version but this is not available to action showing as lite grey.
Any help would be appreciated

I am trying to create mp3 version of itune songs. I have gone through the preference sequence to be mp3 encoder but this is not having any effect. I have also tired from file tab to create a version but this is not available to action showing as lite grey.
Any help would be appreciated

Imported MP3 sound and image CD Bird pics and sounds but each song is an album, so cluttering my album and artist lists. How can I keep together as one album please?

I Imported a MP3 sound and image CD Bird - Birds of Sri Lanka - via itunes on my mac, then synched content to my Iphone as a Playlist to get all the songs/pics in alpha order. BUT each of the 329 birdsongs are listing/appearing as a separate album, so cluttering my album and artist lists :0(
How can I get all the Birds of Sri Lanka songs/albums to come together as just one album please?
Do I need to delete what i have, and download again in another way? :0(
Can I move them all the songs somehow so they become ONE ALBUM :0)
Thank you
BW

OOOOhhhhhh no worries, sorted it.
In playlist Selected all songs, went into Get info and updated COMPILATION field from NO to YES.
:0)

Is there any way to tell "Create MP3 Version" where to create the files other than in the same folder as the songs you want to create the mp3 versions of?

I am trying to get MP3 versions of my non DRM protected songs onto a DVD so I can import them into my cars "Music Register".
There is no easy way to do this that I can see in Itunes . I follow this process..
Highlight the songs I want to copy in Itunes
Select Create MP3 version from main menu
Open up Finder Window showing the Itunes folder with the m4a and MP3 files newly created..
Go Up a directory or 2 to get the Artist 'folder'
copy that folder to my external drive
Delete the MP3 songs from the Itunes folder (I dont want duplicates showing) obviously
Delete the M4a songs from the external drive....
I have about 5000 songs so doing this manually is clearly a complete pain.
I dont think you can force it to create the mp3 files anywhere other than in the current folder in itunes unless someone tells me otherwise
More likely does anyone know of any other software to do this with less effort...
I confess to not being an Itunes fan at all I admit but I like the Match functionality so I keep it otherwise I would cheerfully chuck it in the bin...
Thanks in advance...

It appears I have figured it out. You gotta go down to where it says Destination and tell Lightroom to Organize into One Folder.

ITunes - Create MP3 Version (output destination?)

Hi. I was wondering if anyone out there knew if it was possible to utilize iTunes to create MP3 versions of m4a files, but have them placed in a specific destination?
What I am trying to accomplish and the problem I am having is, I have an MP3 player that only plays well with MP3 files when it comes to ID3 tags and album art. So far iTunes seems to be the only player that can convert a file to MP3 format while keeping all the ID3 tag information intact.
The problem is that I have over 300 songs I need to convert to MP3, which I can easily do in iTunes, except for that when it creates the MP3 version, it is placing it in the individual artists folders. Meaning I would have to locate every file in order to drag them onto my player and then delete them when finished.
Is there a way to have the newly created MP3 files output to a separate destination? Or maybe another program that can do this..??
So far, Ive tried (smartcoverter & adobe encoder) will create an MP3 version, however, it removes the ID3 tag information which is even worse than having to locate each file individually. Any ideas or information would be appreciated. Thanks!

simmer209 wrote:
Hi. I was wondering if anyone out there knew if it was possible to utilize iTunes to create MP3 versions of m4a files, but have them placed in a specific destination?
No such option. iTunes puts the newly created file where iTunes thinks it ought to be: Music\Artist\Album
Other conversion programs, such as Switch, do let you specify a destination folder, and it does keep the tag info.
Meaning I would have to locate every file in order to drag them onto my player and then delete them when finished.
Not at all! After the conversion, sort your library by Date Added, and the newly created versions will be in a row at the top. Highlight them in iTunes and drag them where you want them. You do not need to look for the individual folders!
Try the above with one or two songs so you can get comfortable with how it works.

Create mp3 version grayed out in iTunes

Mac OSX 10.7.4
Itunes version 10.7
The "Create MP3 Version" button is grayed out and I can't select it. I can't convert my AAC audio files as I could before. I could do it before the most recent update.

Nevermind. You can't create an MP3 version at the same time you are importing a cd. Duh!

Capturing sound samples

hi , i need the best way to capture sound samples from an opened Microphone port
is it by directly using a TargetDataLine and how ?
and thanks

Hope this program will help you.
http://www.jsresources.org/examples/SimpleAudioRecorder.java.html

Creating mp3 version

When I'm in iTunes and I try to create mp3 version my only option is to create aac version. How do I change it so I can create mp3 version?

For step-by-step instructions, see:
http://support.apple.com/kb/HT1550
Regards.

Creating mp3 sound samples

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