There are instructions available across the Internet about how to re-tune music to A4=432Hz with the audio player foobar2000 and plugin SoundTouch. This is very nice but since this involves real time pitch shifting of the music it creates unwanted artifacts in the sound. Instead of changing the pitch it is also possible to change the rate of playback. This will slow the music down a bit (1,82%) but in my personal opinion this sounds much better, with no audible artifacts. This is how you do it:

1. Download foobar2000 and install it if you don’t already have it, it’s free.

2. Download the SoundTouch plugin, unzip the archive and copy the containing file ‘foo_dsp_soundtouch.dll’ to the components folder of the foobar2000 installation folder.

3. Run foobar2000 and go to File > Preferences. Once in there go to Playback > DSP Manager. In the rightmost list with available DSPs you should see ‘SoundTouch’. Double-click it to add it to the list of active DSPs. In that list you should select ‘SoundTouch’ by clicking it once and the click ‘Configure selected’.

4. Copy the configuration from the image below (check rate adjust and set it to -1.82%, fine tune with arrows on keyboard). Click OK and then OK again in the Preferences window and that’s it!

If you need more thorough instructions on how to install foobar and the SoundTouch plugin, go to this page:

Side note: remember that not all music is tuned to the disharmonious reference frequency of A4=440Hz, Jimi Hendrix used to tune to somewhere around A4=432Hz, maybe a bit lower (he tuned to what he thought sounded best). Also while checking some YouTube videos me and my friends noticed that Bob Dylan tuned at least some songs to pure A4=432Hz.

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70 Responses to Tutorial: Re-tuning music to A4=432Hz in foobar2000 by adjusting playback speed

  1. SeriousCat says:


    I would like to suggest that you also check out GEOMUSIC by James Furia. πŸ˜‰ Connects the universe’s natural vibration to 432mhz!


  2. fer says:

    I canΒ΄t get 1,82% – I just can move from 1,52 to 2,25 dam!

  3. fer says:

    i did it πŸ™‚

  4. CPYKOmega says:

    WOW!! I didn’t think that this would make that much a difference, but it is AMAZING how much better the music sounds. Thanks for the tips!!!

  5. Andrew says:

    Thank you very much, you saved me a lot of time!

  6. cms says:

    440/432 is 1,0(185), or 1.85% – how did you came with 1.82?

    • Mick says:

      I did it through an experiment. I generated a sinewave at 440Hz, saved that as a wav-file. Then I played that sinewave through foobar2000 and the plugin and adjusted the rate until I got perfect 432Hz out of a tuner. πŸ™‚

      • Mick says:

        I also calculated the rate but I wanted to make sure it was correct. The calculation is: 432/440 = 0.98181 or 98.18% which gives 100% – 98.18% = 1.82%.

        • Alex Arsu says:

          yes but your calculations are in CENTS and the soundtouch plugin uses SEMITONES. if 100cents=12semitones then 98.18181818181818%=11.78181818181818. so in order to get 432hz with foobar soundtouch you need to adjust the pitch -0.21818181818182 or -0.22

          • Mick says:

            You are right about that SoundTouch uses semitones, but that is if you are adjusting the pitch parameter, my article is about adjusting the playback rate (speed) to get A4=432Hz. (I prefer this technique since the audio quality is better this way, the music will be marginally slower though.)

          • Alex Arsu says:

            sorry, I was talking about the pitch slider, I now see that you were talking about the rate slider

  7. I got the Foobar downloaded with the soudtouch! the Music sound phenominal..but how do i take My tracks off of Foobar Retuned at 432hz? is it possible? or do i have to listen to my music on foobar?

  8. Keith says:

    I like -1.81 much better. Opting for the Pitch Adjust to be at -0.32 semitones, and turning off “lower quality” seems to help a lot. Makes everything sound really really good, barely noticeable audio artifacts. Not sure about Anti-Alias filter but I have that at 128 taps, but there might be a better number.

    • Mick says:

      Did you adjust the pitch rather than the rate? I haven’t noticed any artifacts when adjusting the rate. Adjusting the rate will make the music a bit slower but I don’t mind this, I find the sound quality to be better.

  9. P-T says:

    This is great. To be precise, the value is 1,818

  10. Mihai says:

    For kind indications.
    To adjust at -1.82, etc. use the keyboard key not mouse.

  11. Rares says:

    Hi Mick,
    I’ve followed your instructions, as well the tutorial for exporting files.
    Can you please explain me, why on foobar2000, it appears 44100Hz ?
    is 441000Hz = 432Hz?
    Thank you!

    • Rares says:

      correction – > 44100Hz = 432Hz ?

      • Mick says:

        44100Hz is the sampling frequency used for most audio files (the same sampling frequency as Audio CDs). Even if you re-tune the music like this, the sampling frequency will be the same, so don’t worry. πŸ™‚ You can compare by listening to an original track and the re-tuned track directly afterwards, you should hear a difference.

  12. Frank says:


    I would like to know: After pitching it down 1,82 %, is there a Tool for analyzing the Frequency I have now. Like you say, not every Music comes in 440 Hz.

    • Mick says:

      Hmm, I don’t know about a good tool for this. If there are any long notes in a song you can use a normal tuner. There is a java-based tuner online that is good. You can find it here: It’s possible to use that tuner by playing music while having a microphone activated on your computer (web camera etc.)

    • dustytrails says:

      There are a number of way to go about measuring the frequency you speak of. however to be able to tell if you successfully converted A=440hz to A=432hz you would need a track playing the note A at A=440hz then you would measure the output say with a guitar tuner.

  13. Michael says:

    Very nice stuff! I can’t stop listen to my favorites..

  14. Pat says:

    Thank you so much!

  15. Les says:

    I installed Foobar2000 and Soundtouch hoping it would auto-correct the pitch of mp3’s I play, but I don’t think it works like I hoped. I like to load a playlist and strum along. One song might be too sharp, the next might be too flat. I don’t want to apply corrections for each song. I just want it to play each mp3 so it’s in tune with my guitar, which is tuned with a tuner. Can Foobar do this? If not, what player do I need? Thanks!

  16. Ilarion Moga says:

    Hi, I’m using foobar2000 with the plugin seted up for 444Hz with a pitch of +0.16. So it’s sound much better then 432Hz. Many musicians prefer this frequency. It gives warmer tones. I don’t know if all this it’s true but I just wanted to try it out and wath I foud it’s trully intresting!
    Here are some of the of the findings:

  17. Pete says:

    Thank you for your effort helping us.

    I just downloaded foobar and my version simply does not have the DSP “foobar”. It’s just not in the list.

    Do you know what to do?

    Thanks in advance for your help!

  18. Sebastian says:

    foobars bars are fubar!
    no but seriousely, I can scroll the lever to -1,82%, it goes from -1,24 to -1,94 !!!
    anyone have any ideas how to sort this out?

  19. CW.Camp says:

    The program and the plugin both run correctly; together make up an awesome tool for converting music to 432hz. Great program for me so far.

  20. dustytrails says:

    why the hell would you use playback rate to change pitch when there is a setting in this plugin that allows you to control pitch? just adjust the pitch setting to -0.32 semitones. Using playback rate will change the tone, but it will also change the tempo.

    • Mick says:

      The reason for this is audio quality, at least according to my tests with the SoundTouch plugin. Adjusting the pitch decreased the audio quality for me, in some songs it’s easier to hear than other. I couldn’t stand the decreased quality and had to find another way to do this.

      The algorithm required for changing the playback rate of audio files is simpler and doesn’t decrease the quality as much as changing the pitch and keeping the tempo.

      You are absolutely right that this method will reduce the tempo but when it comes to choosing between -1.82% slower tempo or decreased audio quality I choose slower tempo.

      BTW. Good info on the site you linked to for other audio players. Is it your site?

  21. Middleman says:

    If you would like to reach 528Hz, then bump your rate to +20.02%.

    This setting is good for instrumental or electronic music without lyrics.

    Try listening to Holst – The Planets & Elgar – Enigma Varations. Super. : )

    Math Time. 440 X .20 = 88 . 440+88=528

    Above -1.82 =8, 1.82 x 11 = 20.02

    • Mick says:

      That will increase the tempo a lot though, but interesting. To get the same frequencies as A4=528Hz you can also use A4=444Hz. This tuning is used by some orchestras and sounds good.

      Considering the music is played in equal temperament, the frequencies for these two tunings will be the same, only transposed three semitones (A4=444Hz will result in C5=528Hz).

      To reach this tuning you would need to increase playback rate by only 0.91%. (444/440) * 100% = 100.9090% ~ 100.91%.

      • edwin says:

        Hello friend mick I am writing to ask you how much to increase the pitch adjust to listen to 528h since I have all my music at 441h or I should simply increase + 0.91% but that is at the rate I suppose ..? I want to know how much I add to the pitch adjust since I now have it at -0.32; Since 441 + 87 = 528h is correct, please help me, thanks

  22. CODIC says:

    Thank you for the method. Unfortunatly, I don’t agree with your choice, because if you use RATE ADJUST, you slow down the tempo. You should use the PITCH ADJUST which does not slow down the tempo. I have evaluated the pitch to -0.37 semitones to obtain the 432 Hertz expected πŸ™‚

  23. Jeff says:

    Thanks for sharing this! Followed the directions to a T – and you’ve nailed it. I’m listening to music that’s now giving me the chills. A tiny bit slower, but gives my brain time to catch up.

    Absolutely made my day. Thank you.

  24. Mark says:

    Hello guys,

    I’ve been using Foobar at 432Hz as recommended by most websites.
    However, I just heard about 528Hz, which is said to be the best one. I read the post placed by Mick, but I’m not sure how to change the settings on Foobar to reach the frequency of 528Hz.
    Would anyone be kind to explain to me?
    Should I set the rate to +0,91%? Is that it only?


    • Mick says:

      If you increase the pitch or speed to reach A4=528Hz you will get quite a drastic change but if you increase speed by +0.91% like you said you will get A4=444Hz and C5=528Hz. So in other words you assumption is correct. All songs in the key of C will then have the base note resonating with 528Hz (C2=66,C3=132,C4=264,C5=528,C6=1056).

      I don’t actually know what the theory behind 528Hz is based on, the one with A4=432Hz has good theory behind it because if you use Pythagorean tuning based on C=256Hz, A4 will be 432Hz and all C notes will be resonating with the time of a second.

      • M says:

        Any Pythagorean theory behind this must be a complete nonsense for simple reason that second is arbitrary unit. Anyway, is Pythagorean second the same as our second and how can we tell that ? How precise was it ? Pythagorean 432 Hz is not the same as our 432 Hz since there was no way of measuring time precisely back then.

        There is no mathematical reason for one tuning to be better than another since the second is arbitrary unit. So the only cause that these perceptual differences can be attributed to is physiology of human ear and brain. Therefore I can see no reason why we can’t experiment with any other tuning like 528.

        BTW, I also prefer pitch shifting to tempo slowdown here. Slowing down music annoys me a lot for the music I know and expect to play at certain tempo.

        • Mick says:

          The second is an arbitrary unit yes, you have to go with a tuning that feels right. I was probably a bit unclear in the message above, Pythagorean tuning has nothing to do with a base frequency, only the ratio between the notes of the scale, but if you apply Pythagorean tuning to a base of C4=256Hz you will get A4=432Hz.

          But like I also mentioned in the post above, A4=444Hz will give you the same frequencies as A4=528Hz, but transposed.

  25. […] Zo kan je de klank van de muziek persoonlijk afstemmen, wat ik persoonlijk erg veel gebruik.… Ik hoop dat u hier ook wat aan heeft en natuurlijk alle mensen die 432hz muziek waarderen. met […]

  26. Deep says:

    I don’t know if this is precisely the same thing but an interesting thing I found is using virtual dj. (It only slows the music as fine to 1.8) but for the longest time I noticed an intriguing thing. For the longest time I’ve enjoyed slowing down a good portion of the music I listen to because I always believed it sounded more ephemeral and absorbing. It also sounded a lot closer to how I’d *remember* them to sound like as opposed to what they do. Mind you, I was slowing anywhere from 5.8 to 11.9. Then I came across this phenomenon and was blown away to find that this was exactly what I was looking for. It replicated to the letter how I’d always remember songs of mine.
    What I’m interested in is whether or not anyone else has had this experience or has used this program to do this.

  27. tomi says:

    what if i play music that is already in 432Hz, do i need to restore default foobar settings? and how to know if the song that i am listening is already in 432Hz?

  28. J says:

    How can I determine a songs Hz?

  29. Ger says:

    I was just trying to listen music a little more slow remembering how sweet the LP’s would sound in 33rpm, and since most of my music isn’t in that format, well, that’s what i wanted. This idea of yours seems to do the trick just fine. Thanks!

  30. Ger says:

    After much testing i sorrily have to say: when using -1.82 files do not play well. I could hear several breaks (glipses, pops, clicks… call it what you like) that are not there at normal speed. Instead, using -1.81 files play well, without unwanted (or al least not notorious) noises.

    • Mick says:

      Ok, thanks, that’s good to now. I haven’t noticed the clicks etc. myself but I have to listen carefully now and see if I can hear it.

      • Ger says:

        I use a high def soundcard and studio monitors so the level of detail is above the average here. But the noises where notable, so i think with a good pair of speakers it’d be notorious either. Listen carefully. Try a song clean sounding with strings arrangements (i did my tests using the song Leave Yesterday Behind from The Carpenters) and you’ll hear the noises. It’s like little cracks.

  31. ja to ja says:

    44100 Hz have my music files, something have 48000 Hz.
    43200:44100=~ 0,979591836… 97,96%
    -2,04 %

    44100 Hz =/ 44000 Hz

  32. LAFE says:

    muy friend….from Misiones, Arg….you are the boss,

    Thanks you !

  33. Robin says:

    What about using this on the phone? May there be or come a soundtouch plugin to the foobar2000 app too?

  34. edwin says:

    Wave mick very good tutorial I have the foobar ase a year with everything installed good my question is the following I find that the pitch is much better than the rate for the things that I read here that function meets the button quick seeking I also ask that when putting In -0.32 we hear great we would be down 9 semitones verda i to listen to the music at 528 kz we should not increase the pitch +87 since 441 + 87 = 528 because at the top it says + or.91 to get to the 528 tuning explain it to me Thank you (psdt my music absolutely all I have 441 khz seria 441-9 = 432 and the pitch in my player is -0.32 and what value I have to put in the pitch to reach the so old 528 hz) thanks

  35. Niels says:

    If I want to tune my music to 396 Hz, should I put the rate adjust to -10%?

  36. mateusmts says:

    I lowed the tuning to 0.32 instead of speed. IMO worked better.

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