Convert mp3 wav

How do I convert an mp3 file to wav in labview? Using active X with another program, or whatever. Anyone have any examples made?
Why can't NI just include sound vi's that use mp3 just as it does wav? Wav is impractical.
Thx.

Wave isn't impractical. Most compressed audio formats are lossy. The sound is good enough for the human ear, but might not be appropriate for the application.
MP3 is a licensed format and to use it NI would probably have to pay the owners (Fraunhofer, I think) quite a lot of money.
I don't know if you'll find any exposed ActiveX interface for converting mp3 to wave. The more likely possibilities are a DLL or a .Net class. I would try searching Google for DLLs providing this functionality and then see if you can call them in LV.
Try to take over the world!

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Cp6: .mp3 audio being inadvertantly converted to .wav!

I am having an inexplicable problem. I had a WBT crash on me because (I think) the .wav audio files I was using were too much (memory). So, I asked my IT dept. to get me something that converts .wav files into .mp3 (for smaller files). They installed "Audacity" to help me. Audacity does convert the audio into .mp3, and my Cp 6 WBT imports each .mp3 file into each respective slide, but when I go back into each slide that has an .mp3 file installed, each .mp3 audio file is inexplicably converted back to .wav!!!
If anyone can assist, I would greatly appreciate it. Thanks.

Hi there
Internally the audio files are always converted to WAV as well as MP3. But on the way out to the finished product, only the MP3 is used as it is the smaller and more efficient of the two.
At least that's how it worked in the past. Perhaps something changed? Or are you just freaking out because you see wav in your project?
Cheers... Rick

Python / Audio Conversion - I want to convert mp3 to wav

Hi, Ive dabbled very little in actual coding, wrote one python app that these forums really helped me make, and Ive programmed in VBScript and SQL Server, but all academic, nothing for my own uses. I need a program to convert mp3's to .wav's that can then be burned in 'Recorder' to burn the audio disc. I know there are many scripts like this floating around, but I want to do my own, problem is, im lost. I seem to have 2 main problems, getting the file names into a list or tuple, and then actually running the commands to convert using a for loop using lame or mpg321.
this bash script uses mpg321 and sox,
#!/bin/bash
# allmp3wav
for i in *.mp3; do
echo "$i"
tgt=$(echo "$i" | sed -e "s/mp3/wav/")
mpg123 -b 10000 -s -r 44100 "$i" | sox -t raw -r 44100 -s -w -c2 - /var/cdrom/"$tgt"
done
This works fine and I understand the code. Its saying for every file that ends in .mp3, run these commands, which do the coding. The only problem is, this doesnt work in python, since its not pythong Can someone give me a little bit of help? Dont give me the program, or give me to much info, links would be great.
1 - Need to Get Directory
2 - Loop through all the .mp3 files and add them to an array.
3 - create a sub directory named "wav"
mkdir ~/wav
4 - copy all the mp3's to "wav"
cp ARRAy to wav/
5 - convert all .mp3's to wav
6 - delete the copied mp3's from .wav directory
for .mp3
rm
7 - tell me how many wavs were created.
for .wav
count + 1
That is just a rough flow chart of what I need to do, and as you can see its pretty bare as of now. Also, I imagine to run mpg321 or lame commands, I need some sort of lame or mpg321 module? Ive read the python wiki for for loops and lists and tuples, but I need more info. Thanks, Justin.

Alright that helped alot, its almost working now, I am using Popen wrong still I assume, here is what I got.
import os
import subprocess
here = os.getcwd()
ctr = 0
for file in os.listdir(here):
name, ext = os.path.splitext(file)
if ext == ".mp3":
p = subprocess.Popen("mpg123 -w " + name + ".wav " + name + ext , stdout=subprocess.PIPE, shell=True)
ctr = ctr + 1
print ctr
That executes, but gives this error,
High Performance MPEG 1.0/2.0/2.5 Audio Player for Layers 1, 2 and 3
version 1.4.3; written and copyright by Michael Hipp and others
free software (LGPL/GPL) without any warranty but with best wishes
[readers.c:893] error: Cannot file [Beginning: No such file or directory
[mpg123.c:516] error: Cannot open [Beginning: File access error. (code 22)
[readers.c:893] error: Cannot file of: No such file or directory
[mpg123.c:516] error: Cannot open of: File access error. (code 22)
[readers.c:893] error: Cannot file Whats About to Happen] HWY 74.wav 01 [Beginni
ng of Whats: No such file or directory
[mpg123.c:516] error: Cannot open Whats About to Happen] HWY 74.wav 01 [Beginnin
g of Whats: File access error. (code 22)
[readers.c:893] error: Cannot file About: No such file or directory
[mpg123.c:516] error: Cannot open About: File access error. (code 22)
[readers.c:893] error: Cannot file to: No such file or directory
[mpg123.c:516] error: Cannot open to: File access error. (code 22)
[readers.c:893] error: Cannot file Happen]: No such file or directory
[mpg123.c:516] error: Cannot open Happen]: File access error. (code 22)
[readers.c:893] error: Cannot file HWY: No such file or directory
[mpg123.c:516] error: Cannot open HWY: File access error. (code 22)
[readers.c:893] error: Cannot file 74.mp3: No such file or directory
[mpg123.c:516] error: Cannot open 74.mp3: File access error. (code 22)
2
If i remove the subprocess popen, and just print name + ext and use the counter, it prints out both file name together, and how many mp3's it processed, 2. So i know the program is doing what I want, im just converting wrong. Thanks again.
here is whats in the directory, there is more then mp3's, so I know it is filtering the files properly thanks to your splittext.
justin ~/build/convert $ dir -ls
total 12104
20 -rw-r--r-- 1 justin justin 17138 2008-05-19 17:59 00\ -\ Wretch.txt
4 -rw-r--r-- 1 justin justin 44 2008-06-01 18:20 01
7588 -rw-r--r-- 1 justin justin 7768364 2008-05-19 17:59 01\ [Beginning\ of\ What's\ About\ to\ Happen]\ HWY\ 74.mp3
4 -rw-r--r-- 1 justin justin 44 2008-06-01 18:20 02
4484 -rw-r--r-- 1 justin justin 4588063 2008-05-19 17:59 02\ Love\ Has\ Passed\ Me\ By.mp3
4 -rw-r--r-- 1 justin justin 1284 2008-06-01 18:20 convert.py
justin ~/build/convert $
Last edited by axion419 (2008-06-01 22:23:32)

Convert mp3 to Wav?

Hi, i'm looking for a software that would allow me to convert mp3 to wav files. I have to upload files but the source only accepts wav files and I can't get itunes to export to wav format so your help would be much appreciated.

I've used EasyWMA to convert audio formats before, and it may be able to do what you want. There is a limited free trial available:
http://www.easywma.com/
You can also try searching versiontracker.com or macupdate.com with the file types to see if there is other conversion software available.

How can I convert mp3 from my playlist to WAV for powerpoint?

how can I convert mp3 from my playlist to WAV for powerpoint?

iTunes: How to convert a song to a different file format - http://support.apple.com/kb/HT1550 - including information about different formats and discussion about compression.

Converting .m4p files to .mp3/.wav/.wma

Any suggestions to help convert an iTunes file to mp3, wav or wma would be greatly appreciated. Another application I am using requires one of these three files and cannot recognize the origial .m4p file. Thanks in advance.
HP Laptop Windows XP

The .m4p file extension is Apple's "protected" (DRM) format. The letter p stands for protected.
Burn these files to audio CD format (allowed by the terms of use) and then covert this new .aiff file.

CONVERT from iTunes to other FORMATS (AAC, AIFF, MP3, WAV)

Came across a problem in trying to get music purchased from iTunes to be recognized by other media players (Quicktime or Final Cut Express). I found how to get iTunes to export to cd/dvd disks in AIFF format (and other formats).
Steps used:
From iTunes:
Create a new playlist folder in iTunes (under file)
Drop the songs you wished to use into the playlist folder
Go to the iTunes main menu,
select 'Preferences'
select 'Advanced'
select 'Import'
using "Import Using" select the format (AAC, AIFF, MP3, WAV) you desire
Input your CD/DVD disk to burn
highlight your Playlist file in iTunes that you want to convert
select 'File' in iTunes,
select "Burn Playlist to disc"
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Hope this helps others having similar issues

Have you tried other formats, besides AIFF?
You can only burn purchased music to an
b Audio CD
and the Finder will tell you the files are AIFF. Actually the files on an Audio CD are PCM, but Mac OS 'sees' them as AIFF.
You can't convert purchased music in other formats, because it's protected.
M

When I try to convert a wav file to an mp3 it only gives me a 6 or 7 second mp3....what am i doing wrong?

When I try to convert a wav file to an mp3 it only gives me a 6 or 7 second mp3....what am i doing wrong?

Sorry you are having problems. Can you give an example preferably of some small publicly available file and the site you are trying to download it from ?
As a simple example of a download (ok it is a .png image file not not a .exe file) but can you try to download a copy of your avtar/icon, as used on these forums. In Windows one method is that you right click & should get an option save. <br/> Mine alongside uses the link
* https://support.mozilla.com/media/uploads/avatars/avatar-257447.png
Are you able to download such an image, then see it in your download manager, and find it on your computer.
Once you have got Firefox to save your binary file you can use it. In the case of the .exe file you are trying to download that should be usable as intended with your Windows Operating System, the avatar also should be easily opened and viewed.
P.S.
You could try installing the add-on https://addons.mozilla.org/en-US/firefox/addon/opendownload-10902/ if you wished to adapt Firefox to run .exe files instead of just save them.

Converting from WAV to MP3

Hi all,
I have to convert a wave- into an mp3-file during a http-request. What is the best way to do this (library) and are there any samples out there?
Thanks and regards,
Sandro

I had the same problem and just found this. I know the post is old but maybe someone else could benefit. Go to this link
http://www.tritonus.org/plugins.html
and scroll down to the Mp3 encoder and pull in tritonus-mp3enc-2001-04-25.zip . This zip has a step by step read me for what you need to do. This solution will work for windows or linux.
Good Luck!!
Paul

Converting from WAV to MP3 using Creative MediaSou

I am trying to convert from WAV to MP3 using Creative Media Source Version 3.30.35. The program says it is converting the file to MP3 but when it has finished and I examine the properties it still says the file format is WAV. Can anyone shed any light on this, thanks?

It doesn't change the original file - it creates a new file in the new format. Check where your file destination is set to in the Audio Converter screen.
PB

Converting analog audio to MP3/WAV using Garageband

I'd like to use Garageband to convert analog audio (reel-to-reel, cassette, LP) to MP3/Wav formats. What kind of audio capture device do I need for the iMac in order to do this and where are they available?
I have a new iMac running Snow Leopard (MAC OS X 10.6.3); been using PCs for decades, but new to the Mac.
Thanks.

CEM156 wrote:
do you know if it matters whether I'm coming directly out of a deck/turntable, or do I need to go through an amplifier first before going into the audio-in port?
for a cassette or open reel, the line-OUT is fine, for a turntable you need the RIAA curve of a dedicated Phono input.
for more info read the tute on transferring LPs:
http://www.bulletsandbones.com/GB/Tutorials.html#allabouttransferringlps
note: read the caution about guitar amps, the same applies:
http://www.bulletsandbones.com/GB/GBFAQ.html#amplineout
(Let the page FULLY load. The link to your answer is at the top of your screen)

Lossless convert m4p to mp3, wav, unprotected aac, etc.

I see that similar questions have been posted many times over, but still can't find what I'm looking for. My goal is a lossless conversion from m4p to wav.
Most solutions I've found on Apple Discussions is to first burn the audio track to a CD and then RE-import them in the format of your choosing. However, being a slight audiophile, I am concerned that the burn-and-import method is going to negatively affect the quality of the audio.
Are there any legal "macApps" that will provide a lossless conversion of mp4 to wav (preferably w/o burning) ?
cheers,
-gd

gigantedelicado wrote:
I see that similar questions have been posted many times over, but still can't find what I'm looking for. My goal is a lossless conversion from m4p to wav.
You really cannot. MP4 is a lossy format. You do not gain anything by converting to WAV - whatever you had before, would be gone when the MP4 was created. There is no benefit whatsoever for doing such a thing.

Convert mp3 to 5.1 surround sound?

i have a xfi and im attempting to convert a mp3 to 5.1 surround sound. When i got to do it, it says failure file conversion not supported. Am i doing something wrong or can it not be done? it only lets me convert mp3s to 2 channel.

http://forums.creative.com/creativelabs/board/message?board.id=soundblaster&message.id=2563
For to get mp3 saved as multichannel audio, you need to record while playing the mp3 file using Creative Media Source (play mp3 file w/ another software, on Media Source set the recording format to "WAV multichannel" and recording source to "What U Hear". You also need to set the CMSS 3D by the instructions behind the above link).
jutapa

How to convert mp3 software instrument samples to format garageband can use

Hi and thanks in advance.
I'm using GB '08 on OSX 10.4.11 w/ a G4 MDD. ( Sorry folks, This is the setup that I have and cannot buy a new computer or software at this time)
I'm pretty new too DAW and all of this but want to compose music with traditional orchestra sounds as well as what GB offers.
I have found Muse Score and I can get some pretty good results for writing but I want to expand the software instrument voices that GB has.
I found http://www.philharmonia.co.uk/thesoundexchange/make_music/samples/library/
and they have some pretty good sounding software instruments for free, except that they are in mp3 format.
I did some reading and see that GB understands a different format for this. I put some of the sounds into the correct GB folder as a test and result is of course no go. I see that GB uses exs and cst files in addition to wav and aff files.
How do I convert mp3 software instrument samples to the formats garageband can use? Is there a way? What would I need to do this?
Thanks again..

The first step would probably be to convert the samples into AIFF files, that's what GB's sample files are in.
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http://sonicamigos.com/polyphontics/
All about soundfonts:
http://www.bulletsandbones.com/GB/Tutorials/SoundFonts.html
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Can no longer convert mp3's to audiobook in 11.4

Can no longer convert mp3's to audiobook in 11.4. The option is still there, but it will no longer work.
Please help!

Well I figured it out. Turns out if you go to Sync(little down arrow)>DEVICE_NAME>Advanced Options>Quality if you leave it on automatic it will transfer wav files, but if you change it (I did without knowing) then the highest quality you're going to get is 92 WMA.

Convert mp3 wav

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