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Wav file to MP3 converter app?

i’m working on an arduino project that has an audio element to it. and it needs files to be mp3 format. are there any iphone apps that can do this conversion?

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Comments

  • Twisted wave, ferrite are two off the top of my head.

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  • @tja said:
    One free, one partly free (or subscription) free and both can handle lots of conversions.

    Very sad that AudioShare does not support MP3, @j_liljedahl

    Yep I was gonna mention that one and then I remembered it doesn’t do MP3.

  • @HotStrange said:

    @tja said:
    One free, one partly free (or subscription) free and both can handle lots of conversions.

    Very sad that AudioShare does not support MP3, @j_liljedahl

    Yep I was gonna mention that one and then I remembered it doesn’t do MP3.

    It plays MP3 but does not convert to MP3. I could look into adding it if I find a suitable free/open mp3 encoding library with AppStore-compatible license. But who uses MP3 these days? :)

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  • @tja said:

    @j_liljedahl said:

    @HotStrange said:

    @tja said:
    One free, one partly free (or subscription) free and both can handle lots of conversions.

    Very sad that AudioShare does not support MP3, @j_liljedahl

    Yep I was gonna mention that one and then I remembered it doesn’t do MP3.

    It plays MP3 but does not convert to MP3. I could look into adding it if I find a suitable free/open mp3 encoding library with AppStore-compatible license. But who uses MP3 these days? :)

    Oh, I think many people - also I see such question again and again in this forum.
    MP3 is still the standard for mobile music for lots of people, I believe... even if there are more modern alternatives, not all music players (hardware or software) may support them.
    Or, those people want to have just the same sort of files in their library.

    The standard App was "lame" in my times, but I don't know about it's license.

    The encoding part of LAME should indeed be compatible with the App Store:

    https://lame.sourceforge.io/license.txt

  • edited November 2023

    @j_liljedahl said:

    @HotStrange said:

    @tja said:
    One free, one partly free (or subscription) free and both can handle lots of conversions.

    Very sad that AudioShare does not support MP3, @j_liljedahl

    Yep I was gonna mention that one and then I remembered it doesn’t do MP3.

    It plays MP3 but does not convert to MP3. I could look into adding it if I find a suitable free/open mp3 encoding library with AppStore-compatible license. But who uses MP3 these days? :)

    I just bought AudioShare and would definitely welcome the option to convert wav to mp3 there. Thank you in advance ;)

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  • @j_liljedahl said:

    @HotStrange said:

    @tja said:
    One free, one partly free (or subscription) free and both can handle lots of conversions.

    Very sad that AudioShare does not support MP3, @j_liljedahl

    Yep I was gonna mention that one and then I remembered it doesn’t do MP3.

    It plays MP3 but does not convert to MP3. I could look into adding it if I find a suitable free/open mp3 encoding library with AppStore-compatible license. But who uses MP3 these days? :)

    It would be so nice if after 20 years people would finally embrace AAC/m4a finally.

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  • @tja said:

    @Tarekith said:

    @j_liljedahl said:

    @HotStrange said:

    @tja said:
    One free, one partly free (or subscription) free and both can handle lots of conversions.

    Very sad that AudioShare does not support MP3, @j_liljedahl

    Yep I was gonna mention that one and then I remembered it doesn’t do MP3.

    It plays MP3 but does not convert to MP3. I could look into adding it if I find a suitable free/open mp3 encoding library with AppStore-compatible license. But who uses MP3 these days? :)

    It would be so nice if after 20 years people would finally embrace AAC/m4a finally.

    As far as I understood, AAC is better than MP3 at rates of 128kb/s or lower.

    AAC/m4a is generally superior at all but rates compared to mp3 with encoding settings set correctly not just at low bit rates.

  • @j_liljedahl said:

    @HotStrange said:

    @tja said:
    One free, one partly free (or subscription) free and both can handle lots of conversions.

    Very sad that AudioShare does not support MP3, @j_liljedahl

    Yep I was gonna mention that one and then I remembered it doesn’t do MP3.

    It plays MP3 but does not convert to MP3. I could look into adding it if I find a suitable free/open mp3 encoding library with AppStore-compatible license. But who uses MP3 these days? :)

    Is it a bit less common these days, but some (myself included) do still use it occasionally. And some more often than that. And it’s not super common amongst other file converters so I’m sure it would be appreciated by many. (If possible and isn’t too much work that is).

  • edited November 2023
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  • awesome thanks

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  • IOS shortcut
    You do need ashell mini app

    https://routinehub.co/shortcut/12550/

    New Shortcut : ENCODE TO MP3 (finally with LAME encoder in a-Shell!)

    ENCODE TO MP3 is a shortcut to convert multiple audio files from any format into MP3 files with the LAME Encoder.

    How to use it

    • Just select the audio files you want to convert to MP3 from the Files app (using multiple selection), and then use the share menu to send them to the shortcut.
    • The shortcut will open the a-Shell mini app and will do the conversion using ffmpeg and the Lame MP3 encoder at the best quality (320k constant bit rate) or at a quality optimized for file size (variable bit rate 190-250k).
    • You will also be asked if you want to normalize the volume of the files.
    • Wait the shortcut to end all the processing, without touching anything, and after a while you will be asked where to save the resulting MP3 audio files.
    • If you select video files they will be converted to audio only MP3 files.

    Supported audio formats:

    AAC, AC3, AIFF, ASF, AVI, CAF, DFF, DSF, DTS, F4V, FLAC, FLV, HEVC, M4A, M4B, M4R, MAUD, MKA, MKV, MOV, MP2, MP4, MPEG, MPG, OGA, OGG, OPUS, TS, TTA, VOB, VOC, W64, WAV, WEBM, WMA, WMV, 3GP.

    REQUIREMENTS

    • You need the a-Shell Mini app installed. The version must be 1.9.4 or greater.

    ACKNOWLEDGEMENTS

    • I wish to thank his excellency Nicolas Holzschuch (the genius developer of a-Shell) for the port of the Lame mp3 encoder in a-Shell and the early access to the beta.

    INFO

  • edited November 2023

    @tja said:

    @espiegel123 said:

    @tja said:

    @Tarekith said:

    @j_liljedahl said:

    @HotStrange said:

    @tja said:
    One free, one partly free (or subscription) free and both can handle lots of conversions.

    Very sad that AudioShare does not support MP3, @j_liljedahl

    Yep I was gonna mention that one and then I remembered it doesn’t do MP3.

    It plays MP3 but does not convert to MP3. I could look into adding it if I find a suitable free/open mp3 encoding library with AppStore-compatible license. But who uses MP3 these days? :)

    It would be so nice if after 20 years people would finally embrace AAC/m4a finally.

    As far as I understood, AAC is better than MP3 at rates of 128kb/s or lower.

    AAC/m4a is generally superior at all but rates compared to mp3 with encoding settings set correctly not just at low bit rates.

    I hear this from time to time, but never saw a proof.

    But there where several proofs that showed the opposite!

    One of them:

    https://www.sageaudio.com/articles/aac-or-mp3-whats-the-best-lossy-file-type

    I think, lame is as good as it get's.
    Give it a try 🤗

    The Sage Audio comparison isn't worth much.
    I agree that mp3s enjoy more widespread playback support on different devices but to be fair, the number of recent devices that don't support m4a/aac audio are becoming rare.
    Comparing the quality between different encoders by doing volume and null tests is laughable though. It's like judging the quality of a mix by only looking at an oscilloscope without listening to it. Hopefully they don't do their mastering by numbers ;)

    I've been compressing my samples to lossy formats for years, starting with mp3, then OGG Vorbis, then m4a/AAC.
    The only criterions for me were format support on the devices I plan to use them and subjective sound quality of the encoded file, and even with critical sounds from synths or some percussion instruments, both OGG and m4a were always far better than mp3 at the same bitrate between 128k and 192k.
    In the end, I think it's your own judgement that counts. Some people might like the warbly mp3 artifacts!
    Codec developers often spend a lot of time doing listening blind tests to optimize their encoding mechanisms and IMO that's the way to go.

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  • @tja said:
    @rs2000 I'm not saying that you are wrong, but so far I did not see such blind tests done.
    Do you know a website that did such tests in a believable way?

    People often see, read or hear what the want to believe ;-)

    From my experience, I always used lame with VBR and -V 0 and am simply happy.
    But my aged ears will not be able to detect problems - so I may well be totally wrong.

    It has probably been 20+ years since, I researched this. At that time, there were tons of articles and demonstrations of the advantages. Keep in mind that there are a lot of parameters that are used that impact the quality of the resulting encoding. At the time that I was looking into the relative merits of m4a/aac/mp4 vs mp3 (it was important for my job), there were a number of people (mostly who had huge mp3 collections and seemed to have a vested interest in dissing other formats) that posted examples of poorly encoded sources...they had either accidentally or on-purpose chosen encoding settings that resulted in poor quality but the problem was their settings not something inherent in the codec.

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  • edited November 2023

    @tja It's been a while but I guess that you'll still find some information on the hydrogenaud.io forums.
    An older detailed result report can be found here:
    http://listening-test.coresv.net/results.htm

    Edit: A more recent blind test, comparing different AAC encoders:
    https://hydrogenaud.io/index.php?topic=120062.0

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  • While you're at it, let's get a comparison of "Sound Engine" quality on various DAWs, and especially comparing between Desktop and Tablet. It may be necessary to have a sub-test for "Summing Engines". This is very important.

    😉

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  • @wim said:
    While you're at it, let's get a comparison of "Sound Engine" quality on various DAWs, and especially comparing between Desktop and Tablet. It may be necessary to have a sub-test for "Summing Engines". This is very important.

    😉

    :lol:

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